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Journal articles on the topic 'Two-Dimensional metal halide perovskites'

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Published: 24 June 2023

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1

Lu, Yangbin, Kang Qu, Tao Zhang, Qingquan He, and Jun Pan. "Metal Halide Perovskite Nanowires: Controllable Synthesis, Mechanism, and Application in Optoelectronic Devices." Nanomaterials 13, no. 3 (January 19, 2023): 419. http://dx.doi.org/10.3390/nano13030419.

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Metal halide perovskites are promising energy materials because of their high absorption coefficients, long carrier lifetimes, strong photoluminescence, and low cost. Low-dimensional halide perovskites, especially one-dimensional (1D) halide perovskite nanowires (NWs), have become a hot research topic in optoelectronics owing to their excellent optoelectronic properties. Herein, we review the synthetic strategies and mechanisms of halide perovskite NWs in recent years, such as hot injection, vapor phase growth, selfassembly, and solvothermal synthesis. Furthermore, we summarize their applications in optoelectronics, including lasers, photodetectors, and solar cells. Finally, we propose possible perspectives for the development of halide perovskite NWs.

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2

Cheng, Lu, Chang Yi, Yunfang Tong, Lin Zhu, Gunnar Kusch, Xiaoyu Wang, Xinjiang Wang, et al. "Halide Homogenization for High-Performance Blue Perovskite Electroluminescence." Research 2020 (December 24, 2020): 1–10. http://dx.doi.org/10.34133/2020/9017871.

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Metal halide perovskite light-emitting diodes (LEDs) have achieved great progress in recent years. However, bright and spectrally stable blue perovskite LED remains a significant challenge. Three-dimensional mixed-halide perovskites have potential to achieve high brightness electroluminescence, but their emission spectra are unstable as a result of halide phase separation. Here, we reveal that there is already heterogeneous distribution of halides in the as-deposited perovskite films, which can trace back to the nonuniform mixture of halides in the precursors. By simply introducing cationic surfactants to improve the homogeneity of the halides in the precursor solution, we can overcome the phase segregation issue and obtain spectrally stable single-phase blue-emitting perovskites. We demonstrate efficient blue perovskite LEDs with high brightness, e.g., luminous efficacy of 4.7, 2.9, and 0.4 lm W-1 and luminance of over 37,000, 9,300, and 1,300 cd m-2 for sky blue, blue, and deep blue with Commission Internationale de l’Eclairage (CIE) coordinates of (0.068, 0.268), (0.091, 0.165), and (0.129, 0.061), respectively, suggesting real promise of perovskites for LED applications.

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3

Cheng, Dan, Zhaohai Yang, and Yilan Liang. "Preparation and Energy Storage Performance of Perovskite Luminescent Materials by an Electrochemiluminescence Method." Adsorption Science & Technology 2022 (October 3, 2022): 1–10. http://dx.doi.org/10.1155/2022/3092941.

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In recent years, metal halide perovskites have become attractive photosensitive materials due to their excellent optoelectronic properties. Due to its good characteristics, perovskites are used in solar photovoltaic power generation, light-emitting diodes, photodetectors, photocatalysis, and sensors and many other fields. Considering the wide application of perovskites and the study of potential bifunctional devices, the application of perovskites in energy storage devices is relatively small, and a small number of studies focus on organic-inorganic hybrid lead-halide perovskites. However, the related energy storage research on all-inorganic lead-halide perovskites with better stability, which has also been widely concerned, is very scarce. And nontoxic all-inorganic nonperovskite has zero research in energy storage. Based on the above situation, this paper selects the lead-free perovskite Cs2AgSbCl6, and two lead halide perovskites with different dimensions, -0-dimensional Cs4PbBr6 and 3-dimensional CsPbBr3, these three all-inorganic perovskites. It was for electrochemical performance testing.

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4

Niu, Tianqi, Qifan Xue, and Hin-Lap Yip. "Advances in Dion-Jacobson phase two-dimensional metal halide perovskite solar cells." Nanophotonics 10, no. 8 (June 1, 2020): 2069–102. http://dx.doi.org/10.1515/nanoph-2021-0052.

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Abstract Low-dimensional metal halide perovskites have emerged as promising alternatives to the traditional three-dimensional (3D) components, due to their greater structural tunability and environmental stability. Dion-Jacobson (DJ) phase two-dimensional (2D) perovskites, which are formed by incorporating bulky organic diammonium cations into inorganic frameworks that comprises a symmetrically layered array, have recently attracted increasing research interest. The structure-property characteristics of DJ phase perovskites endow them with a unique combination of photovoltaic efficiency and stability, which has led to their impressive employment in perovskite solar cells (PSCs). Here, we review the achievements that have been made to date in the exploitation of DJ phase perovskites in photovoltaic applications. We summarize the various ligand designs, optimization strategies and applications of DJ phase PSCs, and examine the current understanding of the mechanisms underlying their functional behavior. Finally, we discuss the remaining bottlenecks and future outlook for these promising materials, and possible development directions of further commercial processes.

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5

Jagielski, Jakub, Sudhir Kumar, Wen-Yueh Yu, and Chih-Jen Shih. "Layer-controlled two-dimensional perovskites: synthesis and optoelectronics." Journal of Materials Chemistry C 5, no. 23 (2017): 5610–27. http://dx.doi.org/10.1039/c7tc00538e.

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6

Han, Dan, Hongliang Shi, Wenmei Ming, Chenkun Zhou, Biwu Ma, Bayrammurad Saparov, Ying-Zhong Ma, Shiyou Chen, and Mao-Hua Du. "Unraveling luminescence mechanisms in zero-dimensional halide perovskites." Journal of Materials Chemistry C 6, no. 24 (2018): 6398–405. http://dx.doi.org/10.1039/c8tc01291a.

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Zero-dimensional (0D) halides perovskites, in which anionic metal-halide octahedra (MX₆)⁴⁻ are separated by organic or inorganic countercations, have recently shown promise as excellent luminescent materials.

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7

Seitz, Michael, Patricia Gant, Andres Castellanos-Gomez, and Ferry Prins. "Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride." Nanomaterials 9, no. 8 (August 3, 2019): 1120. http://dx.doi.org/10.3390/nano9081120.

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Metal halide perovskites are known to suffer from rapid degradation, limiting their direct applicability. Here, the degradation of phenethylammonium lead iodide (PEA2PbI4) two-dimensional perovskites under ambient conditions was studied using fluorescence, absorbance, and fluorescence lifetime measurements. It was demonstrated that the long-term stability of two-dimensional perovskites could be achieved through the encapsulation with hexagonal boron nitride. While un-encapsulated perovskite flakes degraded within hours, the encapsulated perovskites were stable for at least three months. In addition, encapsulation considerably improved the stability under laser irradiation. The environmental stability, combined with the improved durability under illumination, is a critical ingredient for thorough spectroscopic studies of the intrinsic optoelectronic properties of this material platform.

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8

Kim, Young-Hoon, Himchan Cho, and Tae-Woo Lee. "Metal halide perovskite light emitters." Proceedings of the National Academy of Sciences 113, no. 42 (September 27, 2016): 11694–702. http://dx.doi.org/10.1073/pnas.1607471113.

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Twenty years after layer-type metal halide perovskites were successfully developed, 3D metal halide perovskites (shortly, perovskites) were recently rediscovered and are attracting multidisciplinary interest from physicists, chemists, and material engineers. Perovskites have a crystal structure composed of five atoms per unit cell (ABX3) with cation A positioned at a corner, metal cation B at the center, and halide anion X at the center of six planes and unique optoelectronic properties determined by the crystal structure. Because of very narrow spectra (full width at half-maximum ≤20 nm), which are insensitive to the crystallite/grain/particle dimension and wide wavelength range (400 nm ≤ λ ≤ 780 nm), perovskites are expected to be promising high-color purity light emitters that overcome inherent problems of conventional organic and inorganic quantum dot emitters. Within the last 2 y, perovskites have already demonstrated their great potential in light-emitting diodes by showing high electroluminescence efficiency comparable to those of organic and quantum dot light-emitting diodes. This article reviews the progress of perovskite emitters in two directions of bulk perovskite polycrystalline films and perovskite nanoparticles, describes current challenges, and suggests future research directions for researchers to encourage them to collaborate and to make a synergetic effect in this rapidly emerging multidisciplinary field.

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9

Srimath Kandada, Ajay Ram, and Carlos Silva. "Exciton Polarons in Two-Dimensional Hybrid Metal-Halide Perovskites." Journal of Physical Chemistry Letters 11, no. 9 (March 19, 2020): 3173–84. http://dx.doi.org/10.1021/acs.jpclett.9b02342.

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10

Giri, Ashutosh, Alexander Z. Chen, Alessandro Mattoni, Kiumars Aryana, Depei Zhang, Xiao Hu, Seung-Hun Lee, Joshua J. Choi, and Patrick E. Hopkins. "Ultralow Thermal Conductivity of Two-Dimensional Metal Halide Perovskites." Nano Letters 20, no. 5 (March 23, 2020): 3331–37. http://dx.doi.org/10.1021/acs.nanolett.0c00214.

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11

Huo, Chengxue, Bo Cai, Zhao Yuan, Biwu Ma, and Haibo Zeng. "Two-Dimensional Metal Halide Perovskites: Theory, Synthesis, and Optoelectronics." Small Methods 1, no. 3 (January 12, 2017): 1600018. http://dx.doi.org/10.1002/smtd.201600018.

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12

Wang, Fangfang, Qing Chang, Yikai Yun, Sizhou Liu, You Liu, Jungan Wang, Yinyu Fang, et al. "Hole-Transporting Low-Dimensional Perovskite for Enhancing Photovoltaic Performance." Research 2021 (May 28, 2021): 1–11. http://dx.doi.org/10.34133/2021/9797053.

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Halide perovskites with low-dimensionalities (2D or quasi-2D) have demonstrated outstanding stabilities compared to their 3D counterparts. Nevertheless, poor charge-transporting abilities of organic components in 2D perovskites lead to relatively low power conversion efficiency (PCE) and thus limit their applications in photovoltaics. Here, we report a novel hole-transporting low-dimensional (HT2D) perovskite, which can form a hole-transporting channel on the top surface of 3D perovskite due to self-assembly effects of metal halide frameworks. This HT2D perovskite can significantly reduce interface trap densities and enhance hole-extracting abilities of a heterojunction region between the 3D perovskite and hole-transporting layer. Furthermore, the posttreatment by HT2D can also reduce the crystal defects of perovskite and improve film morphology. As a result, perovskite solar cells (PSCs) can effectively suppress nonradiative recombination, leading to an increasement on photovoltage to >1.20 V and thus achieving >20% power conversion efficiency and >500 h continuous illumination stability. This work provides a pathway to overcome charge-transporting limitations in low-dimensional perovskites and delivers significant enhancements on performance of PSCs.

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13

Liu, Qing-Wei, Shuai Yuan, Shuang-Qiao Sun, Wei Luo, Yi-Jie Zhang, Liang-Sheng Liao, and Man-Keung Fung. "Interfacial engineering for highly efficient quasi-two dimensional organic–inorganic hybrid perovskite light-emitting diodes." Journal of Materials Chemistry C 7, no. 15 (2019): 4344–49. http://dx.doi.org/10.1039/c8tc06490c.

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14

Zhou, Chenkun, Haoran Lin, Qingquan He, Liangjin Xu, Michael Worku, Maya Chaaban, Sujin Lee, Xiaoqin Shi, Mao-Hua Du, and Biwu Ma. "Low dimensional metal halide perovskites and hybrids." Materials Science and Engineering: R: Reports 137 (July 2019): 38–65. http://dx.doi.org/10.1016/j.mser.2018.12.001.

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15

Baranowski, Michał, Mateusz Dyksik, and Paulina Płochocka. "2D Metal Halide Perovskites: A New Fascinating Playground for Exciton Fine Structure Investigations." Scientiae Radices 01, no. 01 (November 18, 2022): 3–25. http://dx.doi.org/10.58332/v22i1a01.

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Two-dimensional (2D) metal halide perovskites are natural quantum wells which consist of low bandgap metal-halide slabs, surrounded by organic spacers barriers. The quantum and dielectric confinements provided by the organic part lead to the extreme exciton binding energy which results in a huge enhancement of exciton fine structure in this material system. This makes 2D perovskites a fascinating playground for fundamental excitonic physics studies. In this review, we summarize the current understanding and quantification of the exciton fine structure in 2D perovskites. We discuss what is the role of exciton fine structure in the optical response of 2D perovskites and how it challenges our understanding of this fundamental excitation. Finally, we highlight some controversy related to particularly large bright-dark exciton states splitting and high efficiency of light emission from these materials. This can result from the unique synergy of excitonic and mechanical properties of 2D perovskites crystals.

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16

Zhang, Lu, Yucheng Liu, Zhou Yang, and Shengzhong (Frank) Liu. "Two dimensional metal halide perovskites: Promising candidates for light-emitting diodes." Journal of Energy Chemistry 37 (October 2019): 97–110. http://dx.doi.org/10.1016/j.jechem.2018.12.005.

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17

Ben Haj Salah, Maroua, Justine Tessier, Nicolas Mercier, Magali Allain, Antonin Leblanc, Xiaoyang Che, Claudine Katan, and Mikael Kepenekian. "A 3D Lead Iodide Hybrid Based on a 2D Perovskite Subnetwork." Crystals 11, no. 12 (December 16, 2021): 1570. http://dx.doi.org/10.3390/cryst11121570.

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Lead halide perovskites have emerged as promising materials for various optoelectronic applications. For photovoltaics, the reference compound is the 3D perovskite (MA)PbI3 (MA+ = methylammonium). However, this material suffers from instabilities towards humidity or light. This makes the search of new stable 3D lead halide materials very relevant. A strategy is the use of intermediate size cations instead of MA, which are not suitable to form the 3D ABX3 perovskites or 2D perovskites. Here, we report on a novel 3D metal halide hybrid material based on the intermediate size cation hydroxypropylammonium (HPA+), (HPA)6(MA)Pb5I17. We will see that extending the carbon chain length from two CH2 units (in the hydroxylethylammonium cation, HEA+) to three (HPA+) precludes the formation of a perovskite network as found in the lead and iodide deficient perovskite (HEA,MA)1+xPbxI3−x. In (HPA)6(MA)Pb5I17 the 3D lead halide network results from a 2D perovskite subnetworks linked by a PbI6 octahedra sharing its faces. DFT calculations confirm the direct band gap and reveal the peculiar band structure of this 3D network. On one hand the valence band has a 1D nature involving the p orbitals of the halide. On the other, the conduction band possesses a clear 2D character involving hybridization between the p orbitals of the metal and the halide.

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18

Heidari Gourji, Fatemeh, and Dhayalan Velauthapillai. "A Review on Cs-Based Pb-Free Double Halide Perovskites: From Theoretical and Experimental Studies to Doping and Applications." Molecules 26, no. 7 (April 1, 2021): 2010. http://dx.doi.org/10.3390/molecules26072010.

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Despite the progressive enhancement in the flexibility of Pb-based perovskites for optoelectronic applications, regrettably, they are facing two main challenges; (1) instability, which originates from using organic components in the perovskite structure, and (2) toxicity due to Pb. Therefore, new, stable non-toxic perovskite materials are demanded to overcome these drawbacks. The research community has been working on a wide variety of Pb-free perovskites with different molecular formulas and dimensionality. A variety of Pb-free halide double perovskites have been widely explored by different research groups in search for stable, non-toxic double perovskite material. Especially, Cs-based Pb-free halide double perovskite has been in focus recently. Herein, we present a review of theoretical and experimental research on Cs-based Pb-free double halide perovskites of structural formulas Cs2M+M3+X6 (M+ = Ag+, Na+, In+ etc.; M3+= Bi3+, In3+, Sb3+; X = Cl−, Br−, I¯) and Cs2M4+X6 (M4+ = Ti4+, Sn4+, Au4+ etc.). We also present the challenges faced by these perovskite compounds and their current applications especially in photovoltaics alongside the effect of metal dopants on their performance.

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19

Johannes, M. Richter, Federico Branchi, V. A. Camargo Franco, Tetsuhiko Nagahara, Baodan Zhao, H. Friend Richard, Giulio Cerullo, and Felix Deschler. "Ultrafast carrier interactions in metal-halide perovskites probed with two-dimensional electronic spectroscopy." EPJ Web of Conferences 205 (2019): 04012. http://dx.doi.org/10.1051/epjconf/201920504012.

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We use 2D electronic spectroscopy with sub-10-fs resolution to probe carrier-carrier scattering in perovskites. We report excitation-density dependent thermalization times below 100-fs. Strong coupling with excitonic states further reveals sub-bandgap states with low oscillator strength.

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20

Shi, Yue, Yu Zhou, Zhiwei Ma, Guanjun Xiao, Kai Wang, and Bo Zou. "Structural regulation and optical behavior of three-dimensional metal halide perovskites under pressure." Journal of Materials Chemistry C 8, no. 37 (2020): 12755–67. http://dx.doi.org/10.1039/d0tc02796k.

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21

Taurisano, Nicola, Gianluca Bravetti, Sonia Carallo, Meiying Liang, Oskar Ronan, Dahnan Spurling, João Coelho, et al. "Inclusion of 2D Transition Metal Dichalcogenides in Perovskite Inks and Their Influence on Solar Cell Performance." Nanomaterials 11, no. 7 (June 29, 2021): 1706. http://dx.doi.org/10.3390/nano11071706.

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Organic–inorganic hybrid perovskite materials have raised great interest in recent years due to their excellent optoelectronic properties, which promise stunning improvements in photovoltaic technologies. Moreover, two-dimensional layered materials such as graphene, its derivatives, and transition metal dichalcogenides have been extensively investigated for a wide range of electronic and optoelectronic applications and have recently shown a synergistic effect in combination with hybrid perovskite materials. Here, we report on the inclusion of liquid-phase exfoliated molybdenum disulfide nanosheets into different perovskite precursor solutions, exploring their influence on final device performance. We compared the effect of such additives upon the growth of diverse perovskites, namely CH3NH3PbI3 (MAPbI3) and triple-cation with mixed halides Csx (MA0.17FA0.83)(1−x)Pb (I0.83Br0.17)3 perovskite. We show how for the referential MAPbI3 materials the addition of the MoS2 additive leads to the formation of larger, highly crystalline grains, which result in a remarkable 15% relative improvement in power conversion efficiency. On the other hand, for the mixed cation–halide perovskite no improvements were observed, confirming that the nucleation process for the two materials is differently influenced by the presence of MoS2.

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22

Barua, Pranta, and Inchan Hwang. "Bulk Perovskite Crystal Properties Determined by Heterogeneous Nucleation and Growth." Materials 16, no. 5 (March 5, 2023): 2110. http://dx.doi.org/10.3390/ma16052110.

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In metal halide perovskites, charge transport in the bulk of the films is influenced by trapping and release and nonradiative recombination at ionic and crystal defects. Thus, mitigating the formation of defects during the synthesis process of perovskites from precursors is required for better device performance. An in-depth understanding of the nucleation and growth mechanisms of perovskite layers is crucial for the successful solution processing of organic–inorganic perovskite thin films for optoelectronic applications. In particular, heterogeneous nucleation, which occurs at the interface, must be understood in detail, as it has an effect on the bulk properties of perovskites. This review presents a detailed discussion on the controlled nucleation and growth kinetics of interfacial perovskite crystal growth. Heterogeneous nucleation kinetics can be controlled by modifying the perovskite solution and the interfacial properties of perovskites adjacent to the underlaying layer and to the air interface. As factors influencing the nucleation kinetics, the effects of surface energy, interfacial engineering, polymer additives, solution concentration, antisolvents, and temperature are discussed. The importance of the nucleation and crystal growth of single-crystal, nanocrystal, and quasi-two-dimensional perovskites is also discussed with respect to the crystallographic orientation.

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23

Lin, YunHui L., Jeffrey L. Blackburn, Matthew C. Beard, and Justin C. Johnson. "Interlayer Triplet-Sensitized Luminescence in Layered Two-Dimensional Hybrid Metal-Halide Perovskites." ACS Energy Letters 6, no. 11 (October 28, 2021): 4079–96. http://dx.doi.org/10.1021/acsenergylett.1c02011.

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24

Xiang, Guangbiao, Yanwen Wu, Man Zhang, Chen Cheng, Jiancai Leng, and Hong Ma. "Dimension-Dependent Bandgap Narrowing and Metallization in Lead-Free Halide Perovskite Cs3Bi2X9 (X = I, Br, and Cl) under High Pressure." Nanomaterials 11, no. 10 (October 14, 2021): 2712. http://dx.doi.org/10.3390/nano11102712.

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Low-toxicity, air-stable cesium bismuth iodide Cs3Bi2X9 (X = I, Br, and Cl) perovskites are gaining substantial attention owing to their excellent potential in photoelectric and photovoltaic applications. In this work, the lattice constants, band structures, density of states, and optical properties of the Cs3Bi2X9 under high pressure perovskites are theoretically studied using the density functional theory. The calculated results show that the changes in the bandgap of the zero-dimensional Cs3Bi2I9, one-dimensional Cs3Bi2Cl9, and two-dimensional Cs3Bi2Br9 perovskites are 3.05, 1.95, and 2.39 eV under a pressure change from 0 to 40 GPa, respectively. Furthermore, it was found that the optimal bandgaps of the Shockley–Queisser theory for the Cs3Bi2I9, Cs3Bi2Br9, and Cs3Bi2Cl9 perovskites can be reached at 2–3, 21–26, and 25–29 GPa, respectively. The Cs3Bi2I9 perovskite was found to transform from a semiconductor into a metal at a pressure of 17.3 GPa. The lattice constants, unit-cell volume, and bandgaps of the Cs3Bi2X9 perovskites exhibit a strong dependence on dimension. Additionally, the Cs3Bi2X9 perovskites have large absorption coefficients in the visible region, and their absorption coefficients undergo a redshift with increasing pressure. The theoretical calculation results obtained in this work strengthen the fundamental understanding of the structures and bandgaps of Cs3Bi2X9 perovskites at high pressures, providing a theoretical support for the design of materials under high pressure.

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25

Qiu, Ting, Yanqiang Hu, Feng Xu, Zhong Yan, Fan Bai, Guohua Jia, and Shufang Zhang. "Recent advances in one-dimensional halide perovskites for optoelectronic applications." Nanoscale 10, no. 45 (2018): 20963–89. http://dx.doi.org/10.1039/c8nr05862h.

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26

Luo, Binbin, Ruosheng Zeng, and Feiming Li. "Editorial on the Special Issue “Advances of Low-Dimensional Metal Halide Perovskite Materials”." Crystals 13, no. 2 (February 18, 2023): 350. http://dx.doi.org/10.3390/cryst13020350.

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27

Tao, Weijian, Qiaohui Zhou, and Haiming Zhu. "Dynamic polaronic screening for anomalous exciton spin relaxation in two-dimensional lead halide perovskites." Science Advances 6, no. 47 (November 2020): eabb7132. http://dx.doi.org/10.1126/sciadv.abb7132.

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Two-dimensional lead halide perovskites with confined excitons have shown exciting potentials in optoelectronic applications. It is intriguing but unclear how the soft and polar lattice redefines excitons in layered perovskites. Here, we reveal the intrinsic exciton properties by investigating exciton spin dynamics, which provides a sensitive probe to exciton coulomb interactions. Compared to transition metal dichalcogenides with comparable exciton binding energy, we observe orders of magnitude smaller exciton-exciton interaction and, counterintuitively, longer exciton spin lifetime at higher temperature. The anomalous spin dynamics implies that excitons exist as exciton polarons with substantially weakened inter- and intra-excitonic interactions by dynamic polaronic screening. The combination of strong light matter interaction from reduced dielectric screening and weakened inter-/intra-exciton interaction from dynamic polaronic screening explains their exceptional performance and provides new rules for quantum-confined optoelectronic and spintronic systems.

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28

Zhu, Pengchen, and Jia Zhu. "Low‐dimensional metal halide perovskites and related optoelectronic applications." InfoMat 2, no. 2 (February 6, 2020): 341–78. http://dx.doi.org/10.1002/inf2.12086.

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29

Ho, Johnny C. "(Invited) From Bulk to Nanostructured Perovskites." ECS Meeting Abstracts MA2022-02, no. 36 (October 9, 2022): 1307. http://dx.doi.org/10.1149/ma2022-02361307mtgabs.

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The dimensionality of semiconductors has a crucial role in determining their properties. Recently, metal halide perovskites have been demonstrated with many exciting applications, attracting wide attention to further their development for advanced optoelectronics, such as photovoltaics, photodetectors, light-emitting diodes, and lasers. At length scales down to nanoscale regimes, surface features as well as quantum confinement effects become dominant in regulating the material properties of perovskite materials. In past years, our group focus on the synthesis and characterization of metal halide perovskites with different configurations, ranging from bulk films, microplates, nanosheets, to nanowires. The corresponding physical properties and device applications were also systematically studied based on their widely tunable dimensionality, morphologies, and compositions. Specifically, for perovskite bulk films, surface defects and bulk structural order significantly affect their device performance. Through optimizing processing techniques, self-assembled quasi-2D perovskite films with graded phase distribution were successfully prepared. Gradient type-II band alignments along the out-of-plane direction of perovskites with spontaneous separation of photo-generated electrons and holes are obtained, which is later employed to construct self-powered vertical-structure photodetectors for the first time. Without any driving voltage, the device exhibited impressive performance with the responsivity up to 444 mA/W and ultrashort response time down to 52 µs. In addition, to assess the intrinsic material properties of crystalline perovskites, freestanding MAPbI3 nanosheets and lead-free Cs3Sb2I9 microplates were fabricated by two-step chemical vapor deposition method, in which excellent optoelectronic performance (e.g., responsively of MAPbI3 nanosheet is measured to be 40 A/W) together with ultra-fast response speed (down to 58 µs) and superior thermal stability were obtained. For nanostructured perovskites, understanding the dimensional features and their impact on the materials and devices is becoming increasingly important. Lately, we reported the direct vapor-liquid-solid growth of single-crystalline all-inorganic lead halide perovskite (i.e., CsPbX3; X = Cl, Br, or I) NWs. These NWs exhibited high-performance photodetection with the responsivity exceeding 4489 A/W and detectivity over 7.9 × 1012 Jones toward the visible light regime. Field-effect transistors based on individual CsPbX3 NWs were also fabricated to show the impressive carrier mobility of 3.05 cm2/Vs, being higher than other all-inorganic perovskite devices. Besides, the realization of high-mobility CsPbBr3 NW devices is reported via a simple surface charge transfer doping strategy. After MoO3 decoration and device fabrication, the hole mobility of CsPbBr3/MoO3 core-shell NW device is significantly enhanced to 23.3 cm2/Vs. All these results provide important guidelines for the further improvement of these perovskite nanostructures for practical utilization.

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30

Amerling, Eric, Kameron R. Hansen, and Luisa Whittaker-Brooks. "Resolving buried optoelectronic features in metal halide perovskites via modulation spectroscopy studies." Journal of Materials Chemistry A 9, no. 42 (2021): 23746–64. http://dx.doi.org/10.1039/d1ta06484c.

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As research on both bulk and low dimensional metal halide perovskites (MHPs) continues to grow, the tools necessary to gain insights into their exotic and highly convoluted optoelectronic features must also expand.

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31

Tao, Cong, Jing-Min Wang, Mei-Ling Niu, Lin Zhu, Qi-Ming Peng, and Jian-Pu Wang. "Magnetic field effects in non-magnetic luminescent materials: from organic semiconductors to halide perovskites." Acta Physica Sinica 71, no. 6 (2022): 068502. http://dx.doi.org/10.7498/aps.71.20211872.

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Magnetic field effects (MFEs) are used to describe the changes of the photophysical properties (including photoluminescence, electroluminescence, injectedcurrent, photocurrent, etc.) when materials and devices are subjected to the external magnetic field. The MFEs in non-magnetic luminescent materials and devices were first observed in organic semiconductor. In the past two decades, the effects have been studied extensively as an emerging physical phenomenon, and also used as a unique experimental method to explore the processes such as charge transport, carrier recombination, and spin polarization in organic semiconductors. Recent studies have found that the MFEs can also be observed in metal halide perovskites with strong spin-orbital coupling. Besides, for expanding the research domain of MFEs, these findings can also be utilized to study the physical mechanism in metal halide perovskites, and then provide an insight into the improving of the performance of perovskite devices. In this review, we focus on the magnetic field effects on the electroluminescence and photoluminescence changes of organic semiconductors and halide perovskites. We review the mainstream of theoretical models and representative experimental phenomena which have been found to date, and comparatively analyze the luminescence behaviors of organic semiconductors and halide perovskites under magnetic fields. It is expected that this review can provide some ideas for the research on the MFEs of organic semiconductors and halideperovskites, and contribute to the research of luminescence in organic materials and halideperovskites.

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32

Selivanov, N. I., A. A. Murashkina, R. Kevorkyants, A. V. Emeline, and D. W. Bahnemann. "Pyridinium lead tribromide and pyridinium lead triiodide: quasi-one-dimensional perovskites with an optically active aromatic π-system." Dalton Transactions 47, no. 45 (2018): 16313–19. http://dx.doi.org/10.1039/c8dt03041c.

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Adjogri, Shadrack J., and Edson L. Meyer. "A Review on Lead-Free Hybrid Halide Perovskites as Light Absorbers for Photovoltaic Applications Based on Their Structural, Optical, and Morphological Properties." Molecules 25, no. 21 (October 30, 2020): 5039. http://dx.doi.org/10.3390/molecules25215039.

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Despite the advancement made by the scientific community in the evolving photovoltaic technologies, including the achievement of a 29.1% power conversion efficiency of perovskite solar cells over the past two decades, there are still numerous challenges facing the advancement of lead-based halide perovskite absorbers for perovskite photovoltaic applications. Among the numerous challenges, the major concern is centered around the toxicity of the emerging lead-based halide perovskite absorbers, thereby leading to drawbacks for their pragmatic application and commercialization. Hence, the replacement of lead in the perovskite material with non-hazardous metal has become the central focus for the actualization of hybrid perovskite technology. This review focuses on lead-free hybrid halide perovskites as light absorbers with emphasis on how their chemical compositions influence optical properties, morphological properties, and to a certain extent, the stability of these perovskite materials.

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34

Saidaminov, Makhsud I., Omar F. Mohammed, and Osman M. Bakr. "Low-Dimensional-Networked Metal Halide Perovskites: The Next Big Thing." ACS Energy Letters 2, no. 4 (March 30, 2017): 889–96. http://dx.doi.org/10.1021/acsenergylett.6b00705.

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35

Liu, Jingying, Keqiang Chen, Sayed Ali Khan, Babar Shabbir, Yupeng Zhang, Qasim Khan, and Qiaoliang Bao. "Synthesis and optical applications of low dimensional metal-halide perovskites." Nanotechnology 31, no. 15 (January 22, 2020): 152002. http://dx.doi.org/10.1088/1361-6528/ab5a19.

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36

Feng, Rui, Jia-Hui Fan, Kai Li, Zhi-Gang Li, Yan Qin, Zi-Ying Li, Wei Li, and Xian-He Bu. "Temperature-Responsive Photoluminescence and Elastic Properties of 1D Lead Halide Perovskites R- and S-(Methylbenzylamine)PbBr3." Molecules 27, no. 3 (January 23, 2022): 728. http://dx.doi.org/10.3390/molecules27030728.

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Low-dimensional metal halide perovskites (MHPs) have received much attention due to their striking semiconducting properties tunable at a molecular level, which hold great potential in the development of next-generation optoelectronic devices. However, the insufficient understanding of their stimulus-responsiveness and elastic properties hinders future practical applications. Here, the thermally responsive emissions and elastic properties of one-dimensional lead halide perovskites R- and S-MBAPbBr3 (MBA+ = methylbenzylamine) were systematically investigated via temperature-dependent photoluminescence (PL) experiments and first-principles calculations. The PL peak positions of both perovskites were redshifted by about 20 nm, and the corresponding full width at half maximum was reduced by about 40 nm, from ambient temperature to about 150 K. This kind of temperature-responsive self-trapped exciton emission could be attributed to the synergistic effect of electron–phonon coupling and thermal expansion due to the alteration of hydrogen bonding. Moreover, the elastic properties of S-MBAPbBr3 were calculated using density functional theory, revealing that its Young’s and shear moduli are in the range of 6.5–33.2 and 2.8–19.5 GPa, respectively, even smaller than those of two-dimensional MHPs. Our work demonstrates that the temperature-responsive emissions and low elastic moduli of these 1D MHPs could find use in flexible devices.

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Hou, Jingwei, Peng Chen, Atul Shukla, Andraž Krajnc, Tiesheng Wang, Xuemei Li, Rana Doasa, et al. "Liquid-phase sintering of lead halide perovskites and metal-organic framework glasses." Science 374, no. 6567 (October 29, 2021): 621–25. http://dx.doi.org/10.1126/science.abf4460.

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Stable emission in glass Lead halide perovskites can exhibit bright, narrow band photoluminescence but have stability issues related to formation of inactive phases and the loss of lead ions. Hou et al . show that the black, photoactive phase of cesium lead iodide can be stabilized by forming a composite with a glassy phase of a metal-organic framework through liquid-phase sintering. The photoluminescence is at least two orders of magnitude greater than that of the pure perovskite. The glass stabilizes the perovskite under high laser excitation, and about 80% of the photoluminescence was maintained after 10,000 hours of water immersion. —PDS

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38

Wei, Zitang, Kang Wang, Wenchao Zhao, Yao Gao, Qixuan Hu, Ke Chen, and Letian Dou. "A selenophene-containing conjugated organic ligand for two-dimensional halide perovskites." Chemical Communications 57, no. 87 (2021): 11469–72. http://dx.doi.org/10.1039/d1cc04679a.

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A selenophene-containing conjugated organic ligand was synthesized and incorporated into a Sn(ii)-based two-dimensional perovskite. FET and LED devices based on these 2D perovskite thin films exhibit high performance and enhanced operational stability.

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39

Varadwaj, Arpita, Pradeep R. Varadwaj, Helder M. Marques, and Koichi Yamashita. "The Pnictogen Bond, Together with Other Non-Covalent Interactions, in the Rational Design of One-, Two- and Three-Dimensional Organic-Inorganic Hybrid Metal Halide Perovskite Semiconducting Materials, and Beyond." International Journal of Molecular Sciences 23, no. 15 (August 8, 2022): 8816. http://dx.doi.org/10.3390/ijms23158816.

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The pnictogen bond, a somewhat overlooked supramolecular chemical synthon known since the middle of the last century, is one of the promising types of non-covalent interactions yet to be fully understood by recognizing and exploiting its properties for the rational design of novel functional materials. Its bonding modes, energy profiles, vibrational structures and charge density topologies, among others, have yet to be comprehensively delineated, both theoretically and experimentally. In this overview, attention is largely centered on the nature of nitrogen-centered pnictogen bonds found in organic-inorganic hybrid metal halide perovskites and closely related structures deposited in the Cambridge Structural Database (CSD) and the Inorganic Chemistry Structural Database (ICSD). Focusing on well-characterized structures, it is shown that it is not merely charge-assisted hydrogen bonds that stabilize the inorganic frameworks, as widely assumed and well-documented, but simultaneously nitrogen-centered pnictogen bonding, and, depending on the atomic constituents of the organic cation, other non-covalent interactions such as halogen bonding and/or tetrel bonding, are also contributors to the stabilizing of a variety of materials in the solid state. We have shown that competition between pnictogen bonding and other interactions plays an important role in determining the tilting of the MX6 (X = a halogen) octahedra of metal halide perovskites in one, two and three-dimensions. The pnictogen interactions are identified to be directional even in zero-dimensional crystals, a structural feature in many engineered ordered materials; hence an interplay between them and other non-covalent interactions drives the structure and the functional properties of perovskite materials and enabling their application in, for example, photovoltaics and optoelectronics. We have demonstrated that nitrogen in ammonium and its derivatives in many chemical systems acts as a pnictogen bond donor and contributes to conferring stability, and hence functionality, to crystalline perovskite systems. The significance of these non-covalent interactions should not be overlooked, especially when the focus is centered on the rationale design and discovery of such highly-valued materials.

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Thouin, Félix, Ajay Ram Srimath Kandada, David A. Valverde-Chávez, Daniele Cortecchia, Ilaria Bargigia, Annamaria Petrozza, Xunmo Yang, Eric R. Bittner, and Carlos Silva. "Electron–Phonon Couplings Inherent in Polarons Drive Exciton Dynamics in Two-Dimensional Metal-Halide Perovskites." Chemistry of Materials 31, no. 17 (August 8, 2019): 7085–91. http://dx.doi.org/10.1021/acs.chemmater.9b02267.

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41

Amerling, Eric, Haipeng Lu, Bryon W. Larson, Annalise E. Maughan, Alan Phillips, Evan Lafalce, Luisa Whittaker-Brooks, et al. "A Multi-Dimensional Perspective on Electronic Doping in Metal Halide Perovskites." ACS Energy Letters 6, no. 3 (March 1, 2021): 1104–23. http://dx.doi.org/10.1021/acsenergylett.0c02476.

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42

Liu, Zhen, Chun Li, Qiu-Yu Shang, Li-Yun Zhao, Yang-Guang Zhong, Yan Gao, Wen-Na Du, et al. "Research progress of low-dimensional metal halide perovskites for lasing applications." Chinese Physics B 27, no. 11 (November 2018): 114209. http://dx.doi.org/10.1088/1674-1056/27/11/114209.

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43

Huo Chengxue, 霍成学, 王子明 Wang Ziming, 李晓明 Li Xiaoming, and 曾海波 Zeng Haibo. "Low-Dimensional Metal Halide Perovskites: a Kind of Microcavity Laser Materials." Chinese Journal of Lasers 44, no. 7 (2017): 0703008. http://dx.doi.org/10.3788/cjl201744.0703008.

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44

Wong, Walter P. D., Jun Yin, Bhumika Chaudhary, Xin Yu Chin, Daniele Cortecchia, Shu-Zee A. Lo, Andrew C. Grimsdale, Omar F. Mohammed, Guglielmo Lanzani, and Cesare Soci. "Large Polaron Self-Trapped States in Three-Dimensional Metal-Halide Perovskites." ACS Materials Letters 2, no. 1 (November 15, 2019): 20–27. http://dx.doi.org/10.1021/acsmaterialslett.9b00276.

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45

Kumar, Ashish, Sanjay Kumar Swami, Rohit Sharma, Sandeep Yadav, V. N. Singh, Joerg J. Schneider, O. P. Sinha, and Ritu Srivastava. "A study on structural, optical, and electrical characteristics of perovskite CsPbBr₃ QD/2D-TiSe₂ nanosheet based nanocomposites for optoelectronic applications." Dalton Transactions 51, no. 10 (2022): 4104–12. http://dx.doi.org/10.1039/d1dt03423e.

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46

Song, Zhaonng, Chongwen Li, Lei Chen, and Yanfa Yan. "(Invited) Monolithic All-Perovskite Tandem Cells for Unassisted Water Splitting." ECS Meeting Abstracts MA2022-02, no. 48 (October 9, 2022): 1800. http://dx.doi.org/10.1149/ma2022-02481800mtgabs.

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The past decade has witnessed a rapid evolution of research on metal halide perovskite-based optoelectronic and energy devices. In light of this remarkable progress, photoelectrochemical (PEC) cells based on halide perovskite photoabsorbers have recently emerged as a promising solar fuel technology. Notably, the bandgap tunability and low-temperature processing make monolithic all-perovskite tandem cells ideal candidates for achieving efficient, cost-effective, unassisted solar-driven water electrolysis devices. Here, we report our progress on fabricating monolithic all-perovskite tandem cells consisting of two solution-processed perovskite subcells for unassisted water-splitting applications. The all-perovskite tandem devices are achieved by monolithically integrating a wide-bandgap (1.7 – 2.1 eV) Pb-based mixed-halide (Br-I) perovskite top subcell and a narrower-bandgap (1.25 - 1.55 eV) bottom subcell based on Pb-based or mixed Pb-Sn iodide perovskites. Varying the halide perovskite composition for each subcell enables us to tailor the photovoltaic performance of the tandem devices. We demonstrate that all-perovskite tandem devices with various bandgap compositions can deliver open-circuit voltages of more than 2 V. The high photovoltage provides a sufficient overpotential to drive unassisted PEC water splitting with a solar-to-hydrogen conversion efficiency of more than 10%. Additionally, we show that proper water-impermeable encapsulants are needed to prevent degradation of the halide perovskite absorbers in an aqueous environment and enable a long operational lifetime.

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Yan, Dong, Mengxia Liu, Zhe Li, and Bo Hou. "Colloidal quantum dots and metal halide perovskite hybridization for solar cell stability and performance enhancement." Journal of Materials Chemistry A 9, no. 28 (2021): 15522–41. http://dx.doi.org/10.1039/d1ta02214h.

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Metal halide perovskites and colloidal quantum dots (QDs) are two emerging classes of photoactive materials that have attracted considerable attention for next-generation high-performance solution-processed solar cells.

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48

Chen, Peng, Yang Bai, Miaoqiang Lyu, Jung-Ho Yun, Mengmeng Hao, and Lianzhou Wang. "Progress and Perspective in Low-Dimensional Metal Halide Perovskites for Optoelectronic Applications." Solar RRL 2, no. 3 (February 8, 2018): 1700186. http://dx.doi.org/10.1002/solr.201700186.

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49

Qi, Jinsong, Shixun Wang, Arsenii Portniagin, Stephen V. Kershaw, and Andrey L. Rogach. "Room Temperature Fabrication of Stable, Strongly Luminescent Dion–Jacobson Tin Bromide Perovskite Microcrystals Achieved through Use of Primary Alcohols." Nanomaterials 11, no. 10 (October 16, 2021): 2738. http://dx.doi.org/10.3390/nano11102738.

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Lead-free two-dimensional metal halide perovskites have recently emerged as promising light-emitting materials due to their improved stability and attractive optical properties. Herein, a facile room temperature wet milling method has been developed to make Dion–Jacobson (DJ) phase ODASnBr4 perovskite microcrystals, whose crystallization was accomplished via the aid of introduced primary alcohols: ethanol, butanol, pentanol, and hexanol. Due to the strong intermolecular hydrogen bonding, the use of ethanol promoted the formation of non-doped ODASnBr4 microcrystals, with an emission peaked at 599 nm and a high photoluminescence quantum yield (PL QY) of 81%. By introducing other primary alcohols with weaker intermolecular hydrogen bonding such as butanol, pentanol, and hexanol, [SnBr6]4− octahedral slabs of the DJ perovskite microcrystals experienced various degrees of expansion while forming O–H…Br hydrogen bonds. This resulted in the emission spectra of these alcohol-doped microcrystals to be adjusted in the range from 572 to 601 nm, while keeping the PL QY high, at around 89%. Our synthetic strategy provides a viable pathway towards strongly emitting lead-free DJ perovskite microcrystals with an improved stability.

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50

Furasova, A. D., G. Hix, S. V. Makarov, and A. Di Carlo. "Mesoporous perovskite solar cells with Al- and Zn-based metal-organic frameworks." Journal of Physics: Conference Series 2015, no. 1 (November 1, 2021): 012042. http://dx.doi.org/10.1088/1742-6596/2015/1/012042.

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Abstract The improvement of lead halide perovskites solar cells (PSC) by hydrophobic metal-organic frameworks (MOF) is one of the promising tools for modern photovoltaic technology to achieve stable and efficient thin-film devices. To show the MOF applicability for PSC, we incorporate two types of MOF: NH2-MIL-53(Al) and basolite Z1200 in n-i-p mesoporous MAPbI3 based solar cells that can add 2.2% efficiency by increasing main photovoltaic parameters. The simplicity of the proposed MOF’s integration allows to use and adopt this approach to incorporate other frameworks for thin-film perovskite devices.

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