Готові списки джерел за темами / Methylammonium Lead Halide

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Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Methylammonium Lead Halide"

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Chen, Xihan, Haipeng Lu, Ye Yang, and Matthew C. Beard. "Excitonic Effects in Methylammonium Lead Halide Perovskites." Journal of Physical Chemistry Letters 9, no. 10 (May 2018): 2595–603. http://dx.doi.org/10.1021/acs.jpclett.8b00526.

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Freppon, Daniel J., Long Men, Sadie J. Burkhow, Jacob W. Petrich, Javier Vela, and Emily A. Smith. "Photophysical properties of wavelength-tunable methylammonium lead halide perovskite nanocrystals." Journal of Materials Chemistry C 5, no. 1 (2017): 118–26. http://dx.doi.org/10.1039/c6tc03886g.

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Malgras, Victor, Joel Henzie, Toshiaki Takei, and Yusuke Yamauchi. "Hybrid methylammonium lead halide perovskite nanocrystals confined in gyroidal silica templates." Chemical Communications 53, no. 15 (2017): 2359–62. http://dx.doi.org/10.1039/c6cc10245j.

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Mali, Sawanta S., Jyoti V. Patil, Hamidreza Arandiyan, and Chang Kook Hong. "Reduced methylammonium triple-cation Rb0.05(FAPbI3)0.95(MAPbBr3)0.05 perovskite solar cells based on a TiO2/SnO2 bilayer electron transport layer approaching a stabilized 21% efficiency: the role of antisolvents." Journal of Materials Chemistry A 7, no. 29 (2019): 17516–28. http://dx.doi.org/10.1039/c9ta05422g.

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García, Teresa, Rocío García-Aboal, Josep Albero, Pedro Atienzar, and Hermenegildo García. "Vapor-Phase Photocatalytic Overall Water Splitting Using Hybrid Methylammonium Copper and Lead Perovskites." Nanomaterials 10, no. 5 (May 18, 2020): 960. http://dx.doi.org/10.3390/nano10050960.

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Анотація:
Films or powders of hybrid methylammonium copper halide perovskite exhibit photocatalytic activity for overall water splitting in the vapor phase in the absence of any sacrificial agent, resulting in the generation of H2 and O2, reaching a maximum production rate of 6 μmol H2 × g cat−1h−1 efficiency. The photocatalytic activity depends on the composition, degreasing all inorganic Cs2CuCl2Br2 perovskite and other Cl/Br proportions in the methylammonium hybrids. XRD indicates that MA2CuCl2Br2 is stable under irradiation conditions in agreement with the linear H2 production with the irradiation time. Similar to copper analogue, hybrid methylammonium lead halide perovskites also promote the overall photocatalytic water splitting, but with four times less efficiency than the Cu analogues. The present results show that, although moisture is strongly detrimental to the photovoltaic applications of hybrid perovskites, it is still possible to use these materials as photocatalysts for processes requiring moisture due to the lack of relevance in the photocatalytic processes of interparticle charge migration.
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Wang, Tianyi, Benjamin Daiber, Jarvist M. Frost, Sander A. Mann, Erik C. Garnett, Aron Walsh, and Bruno Ehrler. "Indirect to direct bandgap transition in methylammonium lead halide perovskite." Energy & Environmental Science 10, no. 2 (2017): 509–15. http://dx.doi.org/10.1039/c6ee03474h.

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Анотація:
Unusually long charge carrier lifetime in methylammonium lead halide perovskites is a result of the Rashba-split indirect bandgap. At high pressure the bandgap becomes purely direct, with shorter carrier lifetime and higher radiative efficiency.
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Zhou, Jiyu, Na Lei, Huiqiong Zhou, Yuan Zhang, Zhiyong Tang, and Lei Jiang. "Understanding the temperature-dependent charge transport, structural variation and photoluminescent properties in methylammonium lead halide perovskite single crystals." Journal of Materials Chemistry C 6, no. 24 (2018): 6556–64. http://dx.doi.org/10.1039/c8tc01717d.

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Jha, Abha, Hari Shankar, Sandeep Kumar, Muniappan Sankar, and Prasenjit Kar. "Efficient charge transfer from organometal lead halide perovskite nanocrystals to free base meso-tetraphenylporphyrins." Nanoscale Advances 4, no. 7 (2022): 1779–85. http://dx.doi.org/10.1039/d1na00835h.

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Capitaine, Anna, and Beniamino Sciacca. "Monocrystalline Methylammonium Lead Halide Perovskite Materials for Photovoltaics." Advanced Materials 33, no. 52 (October 15, 2021): 2102588. http://dx.doi.org/10.1002/adma.202102588.

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Klein, Eugen, Andres Black, Öznur Tokmak, Christian Strelow, Rostyslav Lesyuk, and Christian Klinke. "Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites." ACS Nano 13, no. 6 (June 7, 2019): 6955–62. http://dx.doi.org/10.1021/acsnano.9b01907.

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Більше джерел

Дисертації з теми "Methylammonium Lead Halide"

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Tombe, Sekai Lana. "Optical and electronic properties of methylammonium lead halide perovskite solar cells." University of the Western Cape, 2017. http://hdl.handle.net/11394/6118.

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Анотація:
Philosophiae Doctor - PhD (Chemistry)
Organic-inorganic hybrid perovskite solar cells have emerged as promising materials for next-generation photovoltaics with certified efficiency of 22.1%. Despite rapid developments, achieving precise control over the morphologies of the perovskite films, enhanced stability and reproducibility of the devices remains challenging. In this work, we employed a low-temperature solution processing technique to attain high efficiency inverted planar heterojunction devices with device architecture ITO/PEDOT:PSS/Perovskite/PCBM/Al (indium doped tin oxide; poly(3,4-ethylenedioxythiophene) polystyrene sulfonate; [6,6]-phenyl-C61-butyric acid methyl ester; aluminium). A perovskite solar cell fabrication technique is developed and opto-electronic characterization of solution-processed planar heterojunction perovskite solar cells based on methylammonium (MA) lead halide derivatives, MAPbI3-xYx (Y = Cl, Br, I) is presented in this thesis work. By employing lead iodide (PbI2) with various amounts of additional methylammonium halides, perovskite precursor solutions were obtained, which were used in the fabrication of four perovskite systems, MAPbI3, MAPbI3-xClx and MAPbI3-xBrx and MAPbBr3. The absorption and photoluminescence (steady state and temperature-dependent) behavior were explored in this compositional space.
2021-08-31
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2

Leguy, Aurélien. "Fundamental properties, disorder and stability of methylammonium lead halide perovskites for solar cells." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/50307.

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Hybrid perovskite semiconductors from the MAPbX3 family (MA= CH3NH3; X = I, Br, Cl) can be used to make efficient ( > 22 %) solar cells despite disorder introduced by solution processing. Much remains to be understood about these materials. Optical constants of MAPbX3 single crystals derived from ellipsometry measurements are assigned to inter-band transitions from electronic structure calculations. These are used to simulate the contributions from different optical transitions to a typical transient absorption spectrum. The ellipsometry measurements are further used to show the reversible formation of CH3NH3PbI2·H2O and/or (CH3NH3)4PbI6·2H2O in single crystals thin films and devices upon exposure of MAPbI3 to water vapour, which is an important degradation pathway. Quasi-elastic neutron measurements allowed the dynamics of MA cations to be probed in the material. The dipolar MA+ reorientate between preferred alignments with a room temperature residence time of ~14 ps. Collective realignment of MA+ to screen a device’s built-in potential could reduce photovoltaic performance. However, the timescale for a domain wall to traverse a typical device is roughly estimated to be ~0.1 – 1 ms, faster than most observed hysteresis in MAPbI3 solar cells. Temperature dependent Raman and terahertz spectroscopy measurements indicate that MA+ reorientations are crucial to the transport properties of the material. Most of the vibrational features in MAPbX3 observed between 50 and 3500 cm-1 are assigned to calculated vibrational modes. The presence of additional peaks in the experimental spectra might be due to mode splitting caused by dynamic effects. The spectral linewidths of MAPbX3 indicate unusually short phonon lifetimes, linked to its low lattice thermal conductivity. This suggests that optical rather than acoustic phonon scattering prevails at room temperature in these materials, limiting charge mobility. These findings highlight the central role of disorder and heterogeneity to the optoelectronic properties of MAPbX3 and its impact on device behaviour and stability.
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Giesbrecht, Nadja [Verfasser], and Thomas [Akademischer Betreuer] Bein. "Methylammonium lead halide thin film crystallization for optoelectronic applications / Nadja Giesbrecht ; Betreuer: Thomas Bein." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1189585057/34.

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Aversa, Pierfrancesco. "Primary Defects in Halide Perovskites : Effect on Stability and Performance for Photovoltaic Applications Effect of organic PCBM Electron transport Layers on natural and post-irradiation ageing of optical absorption and emission in methyl ammonium lead triiodide spin –coated on p-i-n Solar Sell Substrates Effect of organic PCBM Electron transport Layers on natural and post-irradiation ageing of optical absorption and emission in triple cation lead mixed halide perovskite spin –coated on p-i-n Solar Sell Substrates Electron Irradiation Induced Ageing Effects on Radiative Recombination Properties of methylammonium lead triiodide layers on p-i-n solar cell substrates Electron Irradiation Induced Ageing Effects on Methylammonium Lead Triiodide Based p-i-n Solar Cells Electron Irradiation Induced Ageing Effects on Radiative Recombination Properties of Quadruple Cation Organic-Inorganic Perovskite Layers." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX050.

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Анотація:
Ces onze dernières années ont vu apparaitre les pérovskites organiques inorganiques hybrides (HOIPs) comme un passionnant domaine de recherche pour leur application potentielle dans les technologies du photovoltaïque (PV) en raison de leurs exceptionnelles propriétés optoélectroniques et de leur facilité de mise en oeuvre. Cependant, les matériaux HOIPs ont plusieurs inconvénients dont leur manque de stabilité en conditions opérationnelles. Améliorer celle-ci est l'un des plus grands défis à relever avant commercialisation. La formule générale est (A1,A2,A3,A4)Pb(X1,X2)3, où les sites A occupés par une distribution de 1 à 4 cations métalliques/organiques et les sites X par celle d’anions halogénures. Les défauts lacunaires natifs sont considérés comme une cause possible de dégradation des cellules solaires HOIPs. L'objectif de ce travail est de comprendre le rôle des défauts dans la stabilité à long terme des matériaux PV HOIPs. A cette fin, des défauts primaires ont été introduits de manière contrôlée par irradiation avec des électrons de haute énergie (1MeV) dans des lots de couches et cellules solaires (SCs) à base de divers composés HOIPs. Il s'agit notamment du prototype PV HOIPs, MAPbI3 (A1PbX13), et de nouveaux composés mixtes d’halogénures à triple ou quadruple cations, (CsMAFA)Pb(I1-xBrx)3 (A3PbX23) ou (GACsMAFA)Pb(I1-yBry)3 (A4PbX23). Les couches sont fabriquées selon la même procédure que les couches actives SCs et, ensuite, traitées dans des conditions similaires. Pour A1PbX13/A3PbX23, la structure SC est de type p-i-n avec des couches organiques pour le transport des trous et des électrons (HTL/ETL). Les couches sont déposées sur le substrat verre/ITO/HTL (PEDOT:PSS) sans ou avec couche supérieure ETL (PCBM). Pour A4PbX23, la structure SC est de type n-i-p avec des couches ETL inorganiques (TiO2) et HTL organiques (Spiro-OMeTAD). Les couches sont directement déposées sur du verre.La spectroscopie d'annihilation de positons donne une évidence directe de l'existence de défauts lacunaires natifs et induits par irradiation dans chaque composé. Les spectres d’absorbance en fonction de l’énergie montrent que le vieillissement naturel et après irradiation génère différentes populations de défauts dans chaque composé. De plus, celles-ci pour A1PbX13 et A3PbX23 diffèrent selon l'absence ou la présence de la couche supérieure ETL. Les populations de défauts évoluent pendant au moins 3 mois. Le vieillissement modifie (i) la bande interdite, (ii) les queues de bande de conduction/valence et (iii) l'absorption optique via des niveaux électroniques profonds. Les effets d’illumination sous laser varient aussi en fonction du vieillissement. L’asymétrie des pics de photoluminescence (PL) dans chaque composé sous illumination laser continue reflète une superposition de raies d’émission gaussiennes à énergie, FWHM et hauteur évoluant avec le temps d'illumination. Les transitions d'émission impliquent des niveaux électroniques localisés peu profonds dans A3PbX23/A4PbX23 et résonnants dans A1PbX13. De tels effets durent au moins 3 mois dans A4PbX23. Ces niveaux électroniques sont attribués à des populations de défauts spécifiquement induits par illumination. Le vieillissement naturel et après irradiation donne des spectres PL à décroissance temporelle résolue en une ou deux exponentielles. Le nombre et la durée de vie sont fortement influencés par l’irradiation initiale et la composition. Une amélioration frappante du fonctionnement PV pour le type SC p-i-n est induite par le vieillissement dû à l'irradiation. Le rendement quantique externe et les performances PVs ont des valeurs plus élevées pour l’état irradié que de référence durant 6 à 12 mois de vieillissement. Cela prouve que l'ingénierie des défauts par irradiation d'électrons à haute énergie a le potentiel de fournir des voies de traitement innovantes pour améliorer la stabilité à long terme des performances photovoltaïques HOIPs
During the last eleven years, Hybrid Organic Inorganic Perovskites (HOIPs) materials have emerged as an exciting topic of research for potential application in solar cell technologies due to their outstanding optoelectronic properties and processing advantages. However, HOIPs materials suffer from several drawbacks with, in peculiar, their lack of stability under operational conditions (light, bias, environment…). To improve this stability is one of the biggest challenges to be addressed before commercialization. The general formula for HOIPs is (A1,A2,A3,A4)Pb(X1,X2)3, where the A sites can be occupied by a distribution of 1 to 4 metallic/organic cations and X sites with halide anions. The role of native vacancy defects has been questioned as a possible cause for HOIPs solar cells degradation. The aim of this work is to understand the defect role in long term stability of HOIPs materials for photovoltaics. For this reason, primary defects were introduced in a controlled way via high energy electron irradiation (1MeV) in sets of layers and solar cells (SCs) fabricated using various HOIPs compounds. Those include the photovoltaic HOIPs prototype, MAPbI3 (A1PbX13), and emergent triple or quadruple cation mixed halide HOIPs, (CsMAFA)Pb(I1-xBrx)3 (A3PbX23) or (GACsMAFA)Pb(I1-yBry)3 (A4PbX23). The HOIPs layers are fabricated according to the same procedure as the HOIPs active SC layers and, subsequently, treated in similar conditions. For A1PbX13 and A3PbX23, the solar cells are of the p-i-n structure with organic hole and electron transport layer (HTL/ETL). The HOIPs layers are deposited on the glass/ITO/HTL (PEDOT:PSS) substrate without or with the top ETL layer (PCBM). For A4PbX23, the solar cells are of the n-i-p type with inorganic ETL (TiO2) and organic HTL (Spiro-OMeTAD) layers. The layers are directly deposited on glass without the ETL layer.Positron Annihilation Spectroscopy (PAS) gives direct evidence for native vacancy-type defects and irradiation induced ones in layers of each HOIP compound. The energy dependence of absorbance shows that natural and after irradiation ageing generates different defect populations in each HOIP compound. These populations strikingly also differ depending on the absence or presence of the top ETL layer for the A1PbX13 and A3PbX23 compounds. The defect populations evolve over ageing duration as long as 3 months. The prominent effects of ageing include (i) band gap modification, (ii) tailing of conduction/valence band extrema and (iii) optical absorption via deep subgap electronic levels. Illumination effects under laser also vary with ageing for each HOIP compound. Asymmetric photoluminescence (PL) peaks in each compound under continuous laser illumination reflect that radiative emission involves Gaussian emission rays with energy, FWHM and height evolving with illumination time. The emission transitions involve shallow localized electronic levels in A3PbX23 and A4PbX23 and resonant ones in A1PbX13. These electronic levels are attributed to specifically illumination-induced defect populations. Natural and after irradiation ageing result in PL decay lifetime spectra resolved into one or two exponential decay components. The decay components number and lifetime are strongly affected by the initial production of irradiation defects and HOIPs composition. Such effects last over 3 months at least in A4PbX23. The p-i-n solar cells exhibit most striking irradiation ageing induced photovoltaics performance. The External Quantum Efficiency (EQE versus photon energy) and the photovoltaic performance (I-V under illumination) of the irradiated solar cells have higher values than those in the reference SCs after 6 to 12 months of ageing. This gives evidence that defect engineering via high energy electron irradiation has a potential for providing innovative processing pathways to enhance the long-term stability of HOIPs photovoltaic performance
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Song, Zhaoning. "Solution Processed High Efficiency Thin Film Solar Cells: from Copper Indium Chalcogenides to Methylammonium Lead Halides." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470403462.

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TUAN, CHIH-FENG, and 段致鋒. "New Materials for Methylammonium Lead Halide Perovskite Solar Cells and Stability Performance." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/j4yf25.

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Анотація:
碩士
國立臺南大學
材料科學系碩士班
104
New Materials for Methylammonium Lead Halide Perovskite Solar Cells and Stability Performance Student：Chih-Feng Tuan Advisor：Ing-Chi Leu Department of Materials Science, National University of Tainan Abstract Organic-inorganic hybrid perovskite solar cells have the characteristics of high power conversion efficiency, low manufacturing cost, and short energy payback time. However, the lifetime of organic-inorganic hybrid perovskite solar cells is about 2000 hours, which cannot compete with crystalline silicon solar cells. There are four parts in this thesis, first part is to simplify the processing procedure by depositing mesoporous SnO2 without compact electron-selective layer. The second part is to improve the power conversion efficiency by adding polymer materials. The third part is to lower the fabrication cost by using CuSCN/conductive graphite composite electrodes instead of noble metal and to improve the stability of the perovskite solar cells. The fourth part is to combine the polymer enhanced perovskite light absorber and conductive graphite electrode to manufacture low cost perovskite solar cells. In this study, we developed crack-free mesoporous SnO2 film and improve the Voc and Jsc. Furthermore, we increased the recombination resistance of perovskite solar cell by adding PEO polymer and obtained a PCE of 14.67%. We replace both noble metal electrode and expensive organic hole transporting layer with conductive graphite electrode. Eventually, we combine PEO polymer enhanced perovskite light absorber and conductive graphite electrode, a solar cell with 74% of PCE retention after 2600 hours is achieved. The stability of perovskite solar cells is improved significantly with the new materials used in this study. Keyword: Perovskite, Tin dioxide , Polymer, Graphite, Stability
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Ying-CyuanLyu and 呂穎銓. "Fabrication of Methylammonium Lead Halide Perovskite Solar Cells by Two Step Solution Processing." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/64279850182312500484.

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Анотація:
碩士
國立成功大學
化學工程學系
103
This study investigated the growth of methylammonium lead halide perovskite material by two step solution processing as well as the influence of transport layer and light absorption layer prepared by different procedure on the performance of solar cell. First, the growth mechanism of methylammonium lead halide in two step solution processing was investigated. By adjusting the reaction time between methylammonium halide solution and lead iodide thin film, the surface morphology of perovskite thin film could be controlled. And, the concentration of methylammonium halide solution was modified to increase the conversion of lead iodide thin film. As a result, CH3NH3PbI3 and CH3NH3PbI3-xClx perovskite thin films were successfully prepared. And then planar perovskite solar cells were fabricated using CH3NH3PbI3 thin film, where, TiO2 compact layer was deposited on FTO glass by hydrolysis of TiCl4 aqueous solution. An optimized efficiency of 8.3% was obtained at a TiO2 compact layer thickness of 100nm. To further investigate the influence of mesoporous transport structure on the efficiency, mesoporous TiO2 structure, prepared by coating TiO2 nanoparticle colloid solution on compact layer, was employed to fabricate mesoporous perovskite solar cell. The results show that lower porosity of mesoporous structure would restrict the diffusion of methylammonium halide leading to the presence of unreacted lead iodide. Therefore, a higher porosity was employed to increase the conversion of lead iodide. An efficiency of 8.0% was obtained via the use of higher porosity mesoporous structure and the deposition of TiO2 compact layer by the oxidization of Ti thin film instead of the hydrolysis of TiCl4 to efficiently suppress the charge recombination at the interface between compact layer and substrate.
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Mukherjee, Rudra. "Band-matched transport layers and intrinsically stable perovskite solar cells for application to perovskite Si tandem cells." Thesis, 2020. https://etd.iisc.ac.in/handle/2005/5512.

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Анотація:
Hybrid perovskite/silicon tandem solar cells offer low-cost alternatives to the commercially established silicon solar cells. In this thesis, we present the material and device optimizations of the subcells that can be used to fabricate tandem cells: Methylammonium Lead Halide (MAPbI3) based perovskite solar cells and Silicon/metal oxide type-II heterojunction based solar cells. Specifically, we focus on (a) improving the Voc of (MAPbI3) solar cells using band-matched polymer hole transporting layers (HTL), (b) improving the intrinsic stability of MAPbI3 by introducing Acetamidinium (AA) cation in the matrix, (c) studying the effect of Magnesium and Bromine substitution in MAPbI3, and (d) developing a Silicon/Cu2O type-II heterojunction solar cell that can act as a bottom cell in the proposed perovskite/silicon tandem solar cell. a) The fermi-splitting (in the absorber) and consequently the Voc of a thin film heterojunction cell depends on the fermi-level of the adjacent transport layers. The most widely used HTL: Spiro-OMeTAD has a HOMO of -5.0 eV, a 0.5 eV valance band maxima (VBM) offset with MAPbI3. In this part, we examine whether a p-type semiconducting polymer: ‘Poly-4-(5-(9,9-dihexyl-7-methyl-9H-fluoren-2-yl)thiophen-2-yl)-5,6-difluoro-7-(5-methylthiophen-2-yl)benzo[c][1,2,5]thiadiazole’ (PF-DTDFBT) having a HOMO level of -5.6 eV: exactly matched to the VBM of MAPbI3 leads to the enhancement of the Voc of the cell. The increased fermi-splitting directly contributed to the improvement of Voc from 1.04 V in standard Spiro-OMeTAD HTL devices to 1.11 V in PF-DTDFBT interlayer devices. In addition, the polymer being hydrophobic leads to an increase in device stability by reducing the seepage of moisture into the active perovskite layer slowing down its degradation. b) One of the major obstacles in the commercialization of perovskites is its instability towards moisture, optical and thermal stimulus. The MAPbI3 structure consists of the organic methyl-ammonium (MA+) cation held in the PbI64- octahedral cage by 3 hydrogen bonds, weakened by the continuous tumbling motion of the C-N spine (in MA+). We report a cation : Acetamidinium, having (i) 4 h-bonds and (ii) restricted C-N bond rotation, that binds more strongly with the PbI64- cage as compared to MA+. Acetamidinium substitution leads to improvement in device performance and stability, which retained 70% of their initial PCE in 480 hours, while the standard cells degrade to ~43 % of their initial PCE in the same time frame. c) The state-of-the-art perovskite devices use the recipe involving weak co-ordination bond between DMSO-PbI2 (solvent-solute binding) broken by an in-situ antisolvent drip (Toluene or Chlorobenzene) to control the nucleation density and grain growth rate. Although for small device areas (~ 1 cm2) this method provides dense compact films with 200-250 nm grain sizes, this method is not suited for depositing films on large area, required for making efficient solar panels. We present the controlled addition of MgCl2/MgI2 in perovskite in the precursor solution that helps in forming films comparable in quality (compactness, grain sizes and carrier lifetime) with the films deposited by anti-solvent drip method. This deposition method neither requires DMSO nor anti-solvent drip making it more commercially attractive. 10% MgCl2/MgI2 addition in MAPbI3 leads to a ~ 80 μs/120 μs increase in carrier lifetime as measured by resonance assisted microwave photoconductance supporting a 150 mV rise in Voc of the devices. d) A silicon/metal oxide heterojunction solar cell is expected to have a lower thermal budget and a higher Jsc as compared to the more popular silicon homojunction cell where a considerable number of incoming photons are lost to the free carrier absorption in the highly doped p++ emitter region. We report the optimization of a type-II n-silicon/Cu2O heterojunction based solar cell. The Si/Cu2O interface is passivated by a 1.3 nm ultra-thin silicon dioxide layer. The passivated devices showed a 200 mV increase in Voc over the unpassivated devices. Further in-situ p-type doping of Cu2O was done by incorporating nitrogen into the Cu2O crystal. This served two purposes : the Voc and FF increased due to enhanced built-in voltage and film conductivity respectively, and the hole fermi-level is now defined by the doped Cu2O layer, providing the relaxation to use lower work function transparent contacts (which otherwise would have decreased the Voc of the cell). The best devices : doped-Cu2O/Si cells with transparent ITO top contact exhibited 5.23% PCE.
Department of Science and Technology, GoI.; Solar Energy Research Institute for India and the UnitedStates (SERIIUS) ; Visvesvaraya PhD Scheme for Electronics & IT program by MeitY, GoI
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Частини книг з теми "Methylammonium Lead Halide"

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Koh, Teck M., Biplab Ghosh, Padinhare C. Harikesh, Subodh Mhaisalkar, and Nripan Mathews. "Beyond Methylammonium Lead Iodide Perovskite." In Halide Perovskites, 155–81. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527800766.ch2_04.

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Tiwari, Udit, and Sahab Dass. "Moisture Stable Soot Coated Methylammonium Lead Iodide Perovskite Photoelectrodes for Hydrogen Production in Water." In Springer Proceedings in Energy, 141–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_18.

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AbstractMetal halide perovskites have triggered a quantum leap in the photovoltaic technology marked by a humongous improvement in the device performance in a matter of just a few years. Despite their promising optoelectronic properties, their use in the photovoltaic sector remains restricted due to their inherent instability towards moisture. Here, we report a simple, cost-effective and highly efficient protection strategy that enables their use as photoelectrodes for photoelectrochemical hydrogen production while being immersed in water. A uniform coating of candle soot and silica is developed as an efficient hydrophobic coating that protects the perovskite from water while allowing the photogenerated electrons to reach the counter electrode. We achieve remarkable stability with photocurrent density above 1.5 mA cm−2 at 1 V versus saturated calomel electrode (SCE) for ~1 h under constant illumination. These results indicate an efficient route for the development of stable perovskite photoelectrodes for solar water splitting.
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Singh, Akash, Arun Singh Chouhan, and Sushobhan Avasthi. "Methylamine Vapor Exposure for Improved Morphology and Stability of Cesium-Methylammonium Lead Halide Perovskite Thin-Films." In Springer Proceedings in Physics, 391–98. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-97604-4_60.

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Etgar, Lioz. "Parameters Influencing the Deposition of Methylammonium Lead Halide Iodide in Hole Conductor Free Perovskite-Based Solar Cells." In Hole Conductor Free Perovskite-based Solar Cells, 25–32. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32991-8_4.

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Тези доповідей конференцій з теми "Methylammonium Lead Halide"

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Ehrler, Bruno. "Ion migration in methylammonium lead halide perovskites (Conference Presentation)." In Physical Chemistry of Semiconductor Materials and Interfaces XVII, edited by Hugo A. Bronstein and Felix Deschler. SPIE, 2018. http://dx.doi.org/10.1117/12.2320259.

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Pastukhov, Andrei I., Anton O. Belorus, and Vyacheslav A. Moshnikov. "Photoluminescence Investigation of Purified and Non-purified Methylammonium Lead Halide Perovskite Nanocrystals." In 2019 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). IEEE, 2019. http://dx.doi.org/10.1109/eiconrus.2019.8657267.

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Sorrentino, Roberto, Peter Topoiovsek, Vijay Venugopalan, Diego Nava, Mario Caironi, and Annamaria Petrozza. "CLEO®/Europe-EQEC 2017, Methylammonium lead halide inks in environmental friendly solvent." In 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2017. http://dx.doi.org/10.1109/cleoe-eqec.2017.8087817.

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Kato, Masataka, Atsushi Suzuki, Yuya Ohishi, Hiroki Tanaka, and Takeo Oku. "Fabrication and characterization of rubidium/formamidinium-incorporated methylammonium-lead-halide perovskite solar cells." In THE IRAGO CONFERENCE 2017: A 360-degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society. Author(s), 2018. http://dx.doi.org/10.1063/1.5021928.

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Zeidell, Andrew, Colin Tyznik, Laura Jennings, Chuang Zhang, Hyunsu Lee, Martin Guthold, Z. Valy Vardeny, and Oana D. Jurchescu. "Enhancement of charge transport in methylammonium lead halide thin films via solvent vapor annealing (Conference Presentation)." In Organic, Hybrid, and Perovskite Photovoltaics XIX, edited by Kwanghee Lee, Zakya H. Kafafi, and Paul A. Lane. SPIE, 2018. http://dx.doi.org/10.1117/12.2320276.

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Cai, Zhuangli, Zuolin Liu, Bin Yang, Min Yang, and Shangchao Lin. "Diffusion-Mediated Anharmonic Phonon Transport and Thermal Conductivity Reduction in Defective Hybrid Perovskites." In ASME 2021 Heat Transfer Summer Conference collocated with the ASME 2021 15th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ht2021-62601.

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Abstract Hybrid metal halide perovskite is a promising material for efficient photovoltaic cells and potential thermoelectric energy conversion. This paper investigates phonon thermal transport in iodine-vacancy-defect methylammonium lead iodide (MAPbI3) perovskite using molecular dynamics simulations. The results show that the iodine vacancy defects suppress the thermal conductivity of defective MAPbI3. This effect is enhanced with increasing the defect concentration. The reduction of thermal conductivity of MAPbI3 with iodine vacancy defects compared with the pristine counterpart is mainly attributed to the enhanced phonon anharmonicity and shorter phonon relaxation time due to the phonon-defect scattering. Although iodine diffusion is observed in MAPbI3 with iodine vacancy defects, defect migration has a limited impact on mass-transfer induced convective phonon transport, while it is a source of phonon anharmonicity. This study may provide guidance for theoretical research and industrial application of as-synthesized metal halide perovskites with intrinsic defects.
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Kim, Byung-Gi, Woongsik Jang, Jae Sang Cho, and Dong Hwan Wang. "Correlation between morphology and charge carrier dynamics for solubility of methylammonium lead halide in efficient perovskite photovoltaics." In Organic, Hybrid, and Perovskite Photovoltaics XXI, edited by Kwanghee Lee, Zakya H. Kafafi, Paul A. Lane, Harald W. Ade, and Yueh-Lin (Lynn) Loo. SPIE, 2020. http://dx.doi.org/10.1117/12.2571459.

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Shin, Byungha. "Effects of post-synthesis thermal conditions on methylammonium lead halide perovskite: band bending at grain boundaries and its impacts on solar cell performance." In Asia Communications and Photonics Conference. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/acpc.2016.ath3i.1.

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Wasylishen, Roderick. "What was so Intriguing About Some of the First NMR Spectra of the Methylammonium Lead Halides?" In Online Conference on Atomic-level Characterisation of Hybrid Perovskites. València: Fundació Scito, 2022. http://dx.doi.org/10.29363/nanoge.hpatom.2022.011.

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