Relevant bibliographies by topics / Metal-free dye

Academic literature on the topic 'Metal-free dye'

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Published: 14 March 2023

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Journal articles on the topic "Metal-free dye"

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Pattarith, K., N. Pungwiwat, and S. Laosooksathit. "Synthesis of Metal-free Organic Dye for Dye-sensitized Solar Cell." Journal of the Korean Chemical Society 55, no. 2 (April 20, 2011): 279–82. http://dx.doi.org/10.5012/jkcs.2011.55.2.279.

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Tian, Haining, Xichuan Yang, Ruikui Chen, Anders Hagfeldt, and Licheng Sun. "A metal-free “black dye” for panchromatic dye-sensitized solar cells." Energy & Environmental Science 2, no. 6 (2009): 674. http://dx.doi.org/10.1039/b901238a.

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Chaurasia, Sumit, and Jiann T. Lin. "Metal-Free Sensitizers for Dye-Sensitized Solar Cells." Chemical Record 16, no. 3 (April 26, 2016): 1311–36. http://dx.doi.org/10.1002/tcr.201500288.

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Sharma, G. D., Surya Prakash Singh, Rajnish Kurchania, and R. J. Ball. "Cosensitization of dye sensitized solar cells with a thiocyanate free Ru dye and a metal free dye containing thienylfluorene conjugation." RSC Advances 3, no. 17 (2013): 6036. http://dx.doi.org/10.1039/c3ra23155k.

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Li, X. D., D. W. Zhang, Z. Sun, Y. W. Chen, and S. M. Huang. "Metal-free indoline-dye-sensitized TiO2 nanotube solar cells." Microelectronics Journal 40, no. 1 (January 2009): 108–14. http://dx.doi.org/10.1016/j.mejo.2008.06.045.

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Koyyada, Ganesh, Sanchari Shome, M. Chandrasekharam, G. D. Sharma, and Surya Prakash Singh. "High performance dye-sensitized solar cell from a cocktail solution of a ruthenium dye and metal free organic dye." RSC Advances 6, no. 47 (2016): 41151–55. http://dx.doi.org/10.1039/c6ra07893a.

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Chae, Youngjin, Sang Jin Kim, Jong Hak Kim, and Eunae Kim. "Metal-free organic-dye-based flexible dye-sensitized solar textiles with panchromatic effect." Dyes and Pigments 113 (February 2015): 378–89. http://dx.doi.org/10.1016/j.dyepig.2014.09.004.

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Parsa, Zahra, Pooya Tahay, and Nasser Safari. "Co-sensitization of porphyrin and metal-free dye for panchromatic dye-sensitized solar cells." Journal of the Iranian Chemical Society 17, no. 2 (September 16, 2019): 453–59. http://dx.doi.org/10.1007/s13738-019-01782-4.

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Ahmad, Shahzada, Elena Guillén, Ladislav Kavan, Michael Grätzel, and Mohammad K. Nazeeruddin. "Metal free sensitizer and catalyst for dye sensitized solar cells." Energy & Environmental Science 6, no. 12 (2013): 3439. http://dx.doi.org/10.1039/c3ee41888j.

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Chen, Guanyu, Kaibo Zheng, Xiaoliang Mo, Dalin Sun, Qinghua Meng, and Guorong Chen. "Metal-free indoline dye sensitized zinc oxide nanowires solar cell." Materials Letters 64, no. 12 (June 2010): 1336–39. http://dx.doi.org/10.1016/j.matlet.2010.03.037.

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Dissertations / Theses on the topic "Metal-free dye"

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Siu, Chi Ho. "Metallated and metal-free molecular dyes for dye-sensitized solar cells." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/96.

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The molecular design, synthesis and spectroscopic characterization of a series of ruthenium(II), metal-free and platinum(II) photosensitizers were discussed. The applications of some of these compounds in dye-sensitized solar were also outlined. To start with, a brief overview on the background of dye-sensitized solar cells (DSSCs) was presented in Chapter 1. In Chapter 2, a series of new thiocyanate-free ruthenium(II) cyclometalated complexes with different ligands were successfully synthesized and some of them were fully characterized by spectroscopic and computational methods. The nature of cyclometalating ligands effectively tunes the properties of the metal complexes and the resulting DSSC performance. In Chapter 3, new di-anchoring organic dyes have been synthesized and characterized. This molecular design strategy can significantly enhance the . value because this successfully inhibits the undesirable charge combination and prolongs the electron lifetime. The discoveries open up a new avenue to the evolution of organic sensitizers and the optimization of bridged di-anchoring dyes for highly efficient co-adsorbent-free DSSCs. In Chapter 4, a series of new thiophene-free platinum sensitizers for the application of DSSCs was developed. Four unsymmetrical platinum(II) di-acetylide complexes containing phenothiazine moiety with different donor units were designed and synthesized. These photosensitizers were fully characterized by spectroscopic as well as computational studies and also successfully employed in DSSC fabrication. These findings provided positive evidence that platinum-acetylide complexes have a great potential and prospect for the use as promising metal-based photosensitizers in DSSC applications. Finally, Chapters 5 and 6 present the concluding remarks and the experimental details of the work described in Chapters 2–4.
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Bopegedera, A. M. Ranjika Priyadarshi. "Dye laser and diode laser spectroscopy of gas phase free radicals." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184695.

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The gaseous free radicals, alkaline-earth metal monoalkylamides, monoacetylides, monoformamidates and monopyrrolidates, consisting of a metal atom (Ca or Sr) bonded to a single ligand, were synthesized in a Broida oven. The electronic and vibrational structures of these molecules were studied by low-resolution laser spectroscopy techniques. These inorganic molecules are ionic, well represented by the structure M⁺L⁻ (M = Ca, Sr: L = ligand). Three electronic transitions were identified for the metal monoalkylamides and the metal monoformamidates. The formamidate anion bonds to the metal in a bidentate fashion through the oxygen and nitrogen atoms. Two electronic transitions were observed for the metal monopyrrolidates. The pyrrolide anion ring bonds to the metal to provide these "open-faced sandwich" type molecules with pseudo-C₅ᵥ symmetry. For the metal monoacetylide molecules, only one electronic transition (Ā²Π-Ẋ²Σ⁺) was observed. Several vibrational frequencies were determined for these inorganic molecules from the low-resolution spectra. The Ā²Π-Ẋ²Σ⁺ transition of the calcium monoacetylide molecule was rotationally analyzed at high-resolution using the filtered laser excitation spectoscopy technique. The rotational line positions were fitted to a ²Π-²Σ⁺ Hamiltonian to obtain several rotational constants. The calcium-carbon bond length in CaCCH was calculated for the ground (2.248 Å) and excited (2.200 Å) electronic states. The vibration-rotation spectra of the gaseous bismuth hydride and bismuth deuteride molecules were recorded, using a diode laser system. The 1-0 fundamental band and several hot bands with Δv-1 were rotationally analyzed. The rotational line positions were fitted first, to a Dunham energy expression and then to a ³Σ⁻ Hamiltonian, to obtain ground state rotational constants. The bismuth-hydrogen (deuterium) bond distance was calculated to be 1.809 Å (1.807 Å).
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Bahojb-Allafan, Babak. "The development of a metal-free, tannic acid-based aftertreatment of nylon 6.6 dyed with acid dyes." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699235.

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During the course of this project, a variety of different areas dealing with the aftertreatment of nylon 6.6 dyed with commercial acid dyes was investigated in an attempt to increase the fastness of dyeings to wet treatment. Protease enzyme was used in conjunction with tannic acid in a single-bath, two stage aftertreatment for nylon 6.6 dyed with acid dyes. The effectiveness of this tannic acid/enzyme aftertreatment was comparable to that of six established aftertreatments namely four commercial syntans, the traditional full backtan and a tannic acid/tin system. The metal-free, tannic acid/enzyme aftertreatment offers a potentially more environmentally acceptable alternative to the antimony-based full backtan aftertreatment, as well as formaldehyde-based syntans and tin-derived system. The effectiveness of the newly developed tannic acid/enzyme aftertreatment in improving the fastness to repeated washing of commercial acid dyes on nylon 6.6 was measured against that of a traditional full backtan aftertreatment. The efficiency of the tannic acid/enzyme system was examined under different aftertreatment conditions including temperature, pH and time. The aftertreatment created a system that was free from any heavy metals and environmentally friendly.
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Anwar, Hafeez. "Precious Metal-free Dye-sensitized Solar Cells." 2013. http://hdl.handle.net/10222/42686.

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Exploring new technologies that can meet the world’s energy demands in an efficient and clean manner is critically important due to the depletion of natural resources and environmental concerns. Dye-sensitized solar cells (DSSCs) are low-cost and clean technology options that use solar energy efficiently and are being intensively studied. How to further reduce the cost of this technology while enhancing device performance is one of the demanding issues for large scale application and commercialization of DSSCs. In this research dissertation, four main contributions are made in this regard with the motivation to reduce further cost of DSSC technology. Firstly, ~10% efficiencies were achieved after developing understanding of key concepts and procedures involved in DSSCs fabrication. These efficiencies were achieved after step-by-step modifications in the DSSC design. Secondly, carbon nanotubes (CNTs) were successfully employed as an alternative to Pt in the counter electrodes of DSSCs. DSSCs fabricated with CNTs were ~86% as efficient as Pt-based cells. Non-aligned CNTs were successfully grown using four different CVD methods and finally, multi-walled vertically aligned CNTs (MW-VACNTs) were synthesized using water-assisted chemical vapor deposition (WA-CVD). Thirdly, carbon derived from pyrolysis of nanocrystalline cellulose (NCC) was successfully employed in counter electrodes of DSSCs instead of Pt. DSSCs with NCC were ~58% as efficient as Pt-based DSSCs. Fourthly, novel organic metal-free dyes were designed and employed instead of commonly used Ru-based dyes. DSSCs with these novel sensitizers were ~62% as efficient as those using the conventional Ru-based dyes. Characterization techniques including current-voltage measurements, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), cyclic voltammetery (CV), thermogravimetric analysis (TGA), small angle x-ray scattering (SAXS), atomic force microscopy (AFM) and x-ray photoelectron spectroscopy (XPS) were used.
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Huang, Shin-Tang, and 黃勢棠. "Metal-Free Organic Dyes for Efficient Dye-Sensitized Solar Cell." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/fnh8g6.

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碩士
中國文化大學
應用化學研究所
96
Two series (Cy and An) of dyes containing a cyanovinyl entity and an anthracene with alkoxy substituents at the 9 and 10 positions, respectively, as the spacer have been synthesized and characterized. Dye-sensitized solar cells (DSSCs) using these dyes as the sensitizers exhibited good efficiencies. The efficiencies of the devices based on Cy series range from 3.48-4.92%, and those based on An series range from 4.17-4.69%. These values which reach 45-70% and 59-67%, respectively, with respect to that of N719-based device fabricated under similar conditions. In general, a better DSSC performance was achieved in molecules with a shorter molecular structure and higher light harvesting. The cyanovinyl entity (Cy series), especially in the long molecular structure, where the cyanovinyl group is away from the electron donating amine by two or more aromatic groups, may behave as a charge trap. This argument was supported by theoretical computations. A positive correlation could be obtained from the theoretically calculated product of oscillator strengths and the charge shift at the cyanoacrylic acid group and the short-circuit currents in the DSSCs. The rigid anthracene segment in An series compounds. The anthracene with alkoxy substituents may cause thiophene moiety hamper the charge transfer and results in lower open-circuit voltages and short-circuit currents of the solar cells.
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Hsu, Shuo-Fu, and 徐碩甫. "Development of Metal-Free Organic Dyes for Highly Efficient Dye-Sensitize Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/59226647164338013933.

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碩士
國立高雄大學
應用化學系碩士班
102
Recent years due to extensive use of fossil fuels, we can imagine in the next few decades, fossil fuels will be exhausted one day. Due to the severe impact brought by “energy crisis”, it is inevitable to discover and develop renewable energy. Among all of the renewable energy, solar energy is the center of attention and it will be the future trend. Wherein Dye-Sensitize solar cells due to its low production cost, flexibility, large industrial potential and large-scale production, thus, it gets extremely attention and high hopes. In the design of this study was to investigate the two functional groups with organic dye amine. Using the method of synthesis of furan derivatives subject and using Suzuki-Miyaura coupling reaction of synthesis coupled with amine functional groups, and will have the effect of electron donating and with an electron-withdrawing effect of the molecule doped into the body which, to increase the charge transfer on the body and increase its spectral absorption range, while on the other side chain embedded with thiophene molecule material can be used to adjust the material bands, enhance its properties, and increase their solar photons absorption ability and then transform the electron on TiO¬2. The study intends to generate several amine group dye structure utilizes low band gap and photon characteristics in two dimension D-π-A system. This study intends to design two structures with amine dye molecules which poses superior light absorption ability, so in the design of two-dimensional structure of dye can control HOMO and LUMO energy level individually. Therefore, the appropriate energy levels can be regulated and an electrolyte to coordinate with TiO¬2 and improve their conditions of the stack structure which can be significantly improved electron transfer between molecules and molecules.
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Chang, Chun-Chi, and 張鈞齊. "Theoretical Studies of Star-shaped Metal-free Dye-sensitized Solar Cell Organic Dyes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/66136092144547200044.

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碩士
淡江大學
化學學系碩士班
103
In this study, we designed a series of metal-free dye-sensitized solar cell (DSSC) organic dyes with star-shaped system ((EDG1)2-EDG2-π-EWG), incorporating with different moiety, such as auxiliary electron-donating groups (EDG1), mainly electron-donating group (EDG2), π-conjugated linker moiety and electron-withdrawing groups (EWG). Our calculated results were calculated by the density functional theory (DFT/B3LYP) and time-dependent density functional theory method with 6-31G(d) basis set. Our calculated results exhibited a good agreement with experimental data. In different EDG1 system, the stronger auxiliary electron-donating groups can make an effect to influence the molecular to get higher EHOMO, large absorption wavelength, large the free energy change for the electron injection, and longer lifetime. These calculated results of designed molecules show that the TPA series of PY and the DPBF series of DPP have a better performance, and may be used as potential sensitizers in the DSSC application. In different EWG system, the stronger acceptor groups can make an effect to influence the molecular to get lower ELUMO, smaller open circuit voltage. Moreover, when the molecular transition configurations is effective charge transfer excitation, electron distribution extend to anchoring group of dye, electron will injected efficiently to TiO¬2. These calculated results of designed molecules show that the TPA and DPBF series of C have a better performance, and may be used as potential sensitizers in the DSSC application.
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Lin, Yeh-Yung, and 林燁雍. "Metal-free Sensitizers Approach for High Performance Dye-sensitized Solar Cells." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/60806421969967380874.

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博士
國立臺灣大學
化學工程學研究所
102
New organic dyes were developed and used as the sensitizers for the dye-sensitized solar cells (DSSCs). Different approaches (co-sensitized, co-adsorbent, zinc oxide photoanode) were used to improve the cell performance. Various physical measurements, including UV–vis absorption spectroscopy, electrochemical impedance spectroscopy (EIS), and incident photo–to–current conversion efficiency (IPCE) spectra, charge extraction method (CEM) and intensity-modulated photovoltage spectroscopy (IMVS) were used to obtain important parameters relevant to the cell performance for correlation between the molecular structure and the cell performance. Bipolar organic dyes containing a 9,10-dihydrophenanthrene entity in the conjugated bridge were synthesized as the sensitizers for DSSCs. The DSSC exhibits good cell efficiencies ranging from 5.21% to 5.95% under 1 sun condition. When combining the best performed dye (BP-2) with a squaraine dye (SQ2), the efficiency increment of the co-sensitized DSSCs is in compliance with the increased ratio of BP-2/SQ2. The co-sensitized DSSC in which the ratio of BP-2 and SQ2 was 8:2 (v/v) exhibited a high efficiency of 8.14%. The TiO2 film adsorbed with co-sensitizers was subjected to Auger electron spectroscopy (AES) for probing the dye distribution across the TiO2 film depth. We synthesized benzothiadiazole (BT)-containing sensitizers with BT entity directly connected to 2-cyanoacrylic acid for DSSCs using ZnO as the photoanode aiming at better charge separation because of better electron transport. The cells performed better than those using TiO2 as the photoanode. The cell efficiency can be further improved when a newly developed brush hierarchical ZnO nanoplates were used as the light back scattering layer (SL) of the cell. Dyes consisting of 2,6-conjugated anthracene segment as the conjugated spacer, 9,10-bishexyloxyanthracen-phenylamino as the electron donor, and cyanoacrylic acid as the acceptor and anchor as well were synthesized. DSSCs using these sensitizers exhibited efficiencies 4.69&;#8722;7.52% under AM 1.5 illumination, and an impressively high efficiency (9.11%) surpassing the N719-based standard cell has also been achieved with the use of CDCA co-adsorbent. In order to enhance electron injection and dark current suppression, the dyes with two anchoring groups, D-π-(A)2, were synthesized from a 2,3,5-substituted thiophene motif. These dyes exhibit high molar extinction coefficient and good power conversion efficiency of the cells. With addition of co-adsorbent, CDCA, the device performance of all the DA-based DSSCs were improved by 1.03 to 2-fold, with the best efficiency reaching 95% of the N719-based standard cell (8.28%).
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Che-LungLee and 李喆龍. "High Efficiency of Dye-Sensitized Solar Cells Based on Ruthenium and Metal-Free Dyes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/6jcg5e.

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Lin, Yu-Ju, and 林育如. "8H-Indeno[2,1-b]thiophene-based Metal-Free Dyes for Dye-Sensitized Solar Cells." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/5dax46.

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Books on the topic "Metal-free dye"

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. Metal-Free Synthetic Organic Dyes. Elsevier, 2018.

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Moradi, Razieh, Negar Lashgari, Hendrik G. Kruger, and Ghodsi Ziarani. Metal-Free Synthetic Organic Dyes. Elsevier, 2018.

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Brik, Mikhail, and Ma Chong-Geng. Theoretical Spectroscopy of Transition Metal and Rare Earth Ions: From Free State to Crystal Field. Jenny Stanford Publishing, 2020.

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Theoretical Spectroscopy of Transition Metal and Rare Earth Ions: From Free State to Crystal Field. Jenny Stanford Publishing, 2019.

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Chong-Geng, Ma, and Mikhail G. Brik. Theoretical Spectroscopy of Transition Metal and Rare Earth Ions: From Free State to Crystal Field. Jenny Stanford Publishing, 2019.

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Metabolic Inhibition of a Toluene-Enriched Microbial Population Due to Lead (Pb2 ); Verification of a Free Metal ION Toxicity Model. Storming Media, 1997.

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Book chapters on the topic "Metal-free dye"

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Ito, Seigo. "Investigation of Dyes for Dye-Sensitized Solar Cells: Ruthenium-Complex Dyes, Metal-Free Dyes, Metal-Complex Porphyrin Dyes and Natural Dyes." In Solar Cells - Dye-Sensitized Devices. InTech, 2011. http://dx.doi.org/10.5772/19960.

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Huang, Yi-June, and Chuan-Pei Lee. "Nanostructured Transition Metal Compounds as Highly Efficient Electrocatalysts for Dye-Sensitized Solar Cells." In Solar Cells [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94021.

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Nowadays, the requirement of energy increases every year, however, the major energy resource is fossil fuel, a limiting source. Dye-sensitized solar cells (DSSCs) are a promising renewable energy source, which could be the major power supply for the future. Recently, the transition metal component has been demonstrated as potential material for counter electrode of platinum (Pt)-free DSSCs owing to their excellent electrocatalytic ability and their abundance on earth. Furthermore, the transition metal components exist different special nanostructures, which provide high surface area and various electron transport routs during electrocatalytic reaction. In this chapter, transition metal components with different nanostructures used for the application of electrocatalyst in DSSCs will be introduced; the performance of electrocatalyst between intrinsic heterogeneous rate constant and effective electrocatalytic surface area are also be clarified. Final, the advantages of the electrocatalyst with different dimensions (i.e., one to three dimension structures) used in DSSCs are also summarized in the conclusion.
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Aftabuzzaman, Mohammad, and Hwan Kyu Kim. "Porous Carbon Materials as Supreme Metal-Free Counter Electrode for Dye-Sensitized Solar Cells." In Emerging Solar Energy Materials. InTech, 2018. http://dx.doi.org/10.5772/intechopen.75398.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Anthraquinone Dyes." In Metal-Free Synthetic Organic Dyes, 9–17. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00002-9.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Amine Dyes." In Metal-Free Synthetic Organic Dyes, 19–46. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00003-0.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Azo Dyes." In Metal-Free Synthetic Organic Dyes, 47–93. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00004-2.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "BODIPY Dyes." In Metal-Free Synthetic Organic Dyes, 95–107. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00005-4.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Carbazole Dyes." In Metal-Free Synthetic Organic Dyes, 109–16. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00006-6.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Coumarin Dyes." In Metal-Free Synthetic Organic Dyes, 117–25. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00007-8.

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Ziarani, Ghodsi Mohammadi, Razieh Moradi, Negar Lashgari, and Hendrik G. Kruger. "Cyanine Dyes." In Metal-Free Synthetic Organic Dyes, 127–52. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-815647-6.00008-x.

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Conference papers on the topic "Metal-free dye"

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Saxena, Vibha, P. Veerender, A. K. Chauhan, P. Jha, D. K. Aswal, and S. K. Gupta. "Metal-free organic dye for dye sensitized solar cells." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4710177.

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Zhang, D. W., S. Chen, X. D. Li, Z. A. Wang, J. H. Shi, Z. Sun, X. J. Yin, and S. M. Huang. "Electrochemical study on the TiO 2 porous electrodes for metal-free dye-sensitized solar cells." In Photonics and Optoelectronics Meetings 2009, edited by Michael Grätzel, Hiroshi Amano, Chin Hsin Chen, Changqing Chen, and Peng Wang. SPIE, 2009. http://dx.doi.org/10.1117/12.840614.

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Mohankumar, V., P. Pounraj, M. Senthil Pandian, and P. Ramasamy. "Simple N-hexylcarbazole based metal free sensitizer for dye sensitized solar cells (DSSC) application – A quantum chemical approach." In DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5113196.

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Rahman, Shakeelur, Bilal Momin, Higgins M. W., Uday S. Annapure, and Neetu Jha. "Synthesis of metal free ultrathin graphitic carbon nitride sheet for photocatalytic dye degradation of Rhodamine B under visible light irradiation." In DAE SOLID STATE PHYSICS SYMPOSIUM 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5029057.

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Anbarasan, P. M., P. M. Champion, and L. D. Ziegler. "Geometries, Electronic Structures, And Spectral Properties Of Some Metal Free Phthalonitrile Derivatives For Enhancement Of The Dye Sensitized Solar Cells." In XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482667.

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Baba, Kazutaka, Kazuhiro Hayashi, and Mitsunobu Miyagi. "Silver Island Films for Write-Once Optical Storage Media." In Optical Data Storage. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/ods.1994.tud6.

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Recently many write-once (WO) storage media have been proposed and investigated, including organic dye and tellurium based alloy, etc. A metal island film is one of the potential WO storage media. It is composed of nanometer-size metal particles (i.e., islands) and exhibits a high reflectance and large absorptance due to the resonance of free electrons in the islands near the resonance wavelength. As the optical properties of the metal island films can be thermally changed, it is expected that an efficient heat-mode WO optical memory is realized by using them. Laser writing was already reported on gold (Au) island films with a 650 nm-Kr laser from the thermal transformation of Au islands [1] and on copper (Cu) island films with an 820 nm-laser diode from the oxidization of Cu islands [2,3].
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Hirao, K. "Room Temperature Hole-Burning in Sm2+-doped Borate Glasses." In Spectral Hole-Burning and Related Spectroscopies: Science and Applications. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/shbs.1994.thg1.

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Recently, the interests in optical memory based on persistent spectral hole burning (PSHB) are increased because of its possibility of the application to high density optical memory. PSHB was observed for an organic dye doped in polymer and rear earth or transition metal doped in inorganic crystal or glasses up to now. Since PSHB was observed by two Russian groups (Gorokhovskii et al. and Kharlamov et al.) for free base phthalocyanine in a n-octane Shpol'skii matrix1 and for perylene and 9-aminoacridine molecules in glassy ethanol matrix2, PSHB materials are studied primarily for the polymer doped with an organic dye. But such materials can make hole only at very low temperature. Room temperature PSHB phenomena were observed on Sm2+ doped fluoride crystals3-5 and glasses6 recently, however these materials' Гih(inhomogeneous line width)/Гh(homogeneous line width)'s which are the parameters of data multiplicity in PSHB optical memory are an order of unity. For the application of PSHB materials to optical memory, high operating temperature, high Гih/Гh, and rapid reaction rate are wanted. Glass has a superiority on the view point of optical memory application because of its broad inhomogeneous line width and productivity. Our group has discovered room temperature PSHB for Sm2+ in borate glass systems whose Гih/Гh is 24.7 PSHB for rear earth metal in glass matrix has not been studied seriously, yet. It is thought that the study of the relationship between the optical hole and glass structure is necessary.
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8

Mcilrath, Thomas J. "EUV spectroscopy using laser-generated plasma light sources." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.tuc3.

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Laser-produced plasmas have been shown to be excellent laboratory sources of continuum radiation in the XUV and soft x-ray spectral region (10-1000 Å). We present high-resolution photographic and photoelectric spectra of the continua between 40 and 500 A, comparing different target materials for cleanliness and relative intensity of the continua. Photographic spectra have been obtained on a 10.7-m grazing incidence spectrograph and a 6.67-m normal incidence spectrograph and a photoelectric spectra obtained with a 1.5-m grazing incidence spectrograph using a multichannel detector array. Spectra have been obtained using both a Nd:YAG (10-Hz) laser and a ruby (0.1-Hz) laser. The XUV output is characterized by excellent intensity stability, high intensity, and an almost line-free continuum. A comparison with other short wavelength light sources is given. The source has been used for atomic absorption spectroscopy of ground state and excited state neutral atoms and for ground state atomic ions by placing samples in a metal vapor heat pipe and using a resonant dye laser for excitation and ionization of the atomic vapor. Inner shell absorption spectra of Ca, Ca+, and other atomic systems are presented.
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Balasubrahmaniyam, M., Anuradha Patra, A. R. Ganesan, and S. Kasiviswanathan. "Metal-dielectric composite for dispersion free optics." In SOLID STATE PHYSICS: PROCEEDINGS OF THE 57TH DAE SOLID STATE PHYSICS SYMPOSIUM 2012. AIP, 2013. http://dx.doi.org/10.1063/1.4791006.

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Sahu, Deepak K., and Sanjoy Datta. "Ambiguity free characterization of metal-insulator transition in disordered fermionic systems." In DAE SOLID STATE PHYSICS SYMPOSIUM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016677.

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Reports on the topic "Metal-free dye"

1

Yermiyahu, Uri, Thomas Kinraide, and Uri Mingelgrin. Role of Binding to the Root Surface and Electrostatic Attraction in the Uptake of Heavy Metal by Plants. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7586482.bard.

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The principal accomplishment of the research supported by BARD was progress toward a comprehensive view of cell-surface electrical effects (both in cell walls [CWs] and at plasma membrane [PM] surfaces) upon ion uptake, intoxication, and amelioration. The research confirmed that electrostatic models (e.g., Gouy-Chapman-Stern [G-C-S]), with parameter values contributed by us, successfully predict ion behavior at cell surfaces. Specific research objectives 1. To characterize the sorption of selected heavy metals (Cu, Zn, Pb, Cd) to the root PM in the presence of other cations and organic ligands (citric and humic acids). 2. To compute the parameters of a G-C-S model for heavy-metal sorption to the root PM. 3. To characterize the accumulation of selected heavy metals in various plant parts. 4. To determine whether model-computed ion binding or ion activities at root PM surfaces predict heavy-metal accumulation in whole roots, root tips, or plant shoots. 5. To determine whether measured ion binding by protoplast-free roots (i.e., root CWs) predicts heavy-metal accumulation in whole roots, root tips, or plant shoots. 6. To correlate growth inhibition, and other toxic responses, with the measured and computed factors mentioned above. 7. To determine whether genotypic differences in heavy-metal accumulation and toxic responses correlate with genotypic differences in parameters of the G-C-S model. Of the original objectives, all except for objective 7 were met. Work performed to meet the other objectives, and necessitated on the basis of experimental findings, took the time that would have been required to meet objective 7. In addition, work with Pb was unsuccessful due to experimental complications and work on Cd is still in progress. On the other hand, the uptake and toxicity of the anion, selenate was characterized with respect to electrostatic effects and the influences of metal cations. In addition, the project included more theoretical work, supported by experimentation, than was originally planned. This included transmembrane ion fluxes considered in terms of PM-surface electrical potentials and the influence of CWs upon ion concentrations at PM surfaces. A important feature of the biogeochemistry of trace elements in the rhizosphere is the interaction between plant-root surfaces and the ions present in the soil solution. The ions, especially the cations, of the soil solution may be accumulated in the aqueous phases of cell surfaces external to the PMs, sometimes referred to as the "water free space" and the "Donnan free space". In addition, ions may bind to the CW components or to the PM surface with variable binding strength. Accumulation at the cell surface often leads to accumulation in other plant parts with implications for the safety and quality of foods. A G-C-S model for PMs and a Donnan-plus-binding model for CWs were used successfully to compute electrical potentials, ion binding, and ion concentration at root-cell surfaces. With these electrical potentials, corresponding values for ion activities may be computed that are at least proportional to actual values also. The computed cell-surface ion activities predict and explain ion uptake, intoxication, and amelioration of intoxication much more accurately than ion activities in the bulk-phase rooting medium.
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TESTING OF ADDITIVELY MANUFACTURED STAINLESS STEEL MATERIAL AND CROSS-SECTIONS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.175.

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Powder bed fusion (PBF) additive manufacturing has the potential for significant impact on the construction industry due to its ability to produce complex and free-form components with high-precision. However, the size of components is limited by the build envelope of PBF machines. Laser welding offers a means of joining small individual PBF parts together to create larger-scale parts. This paper investigates the microstructure and material properties of stainless steel coupons with and without laser-welded joints, in conjunction with the structural performance of stainless steel circular hollow sections (CHS) at the cross-sectional level, with all specimens printed by PBF. The PBF base material exhibited a typical cellular microstructure, while the weld material consisted of equiaxed, columnar and cellular dendrite microstructures. The proof strengths of the weld were lower than those of the base metal, and the strengths of the PBF base metal were dependent on the build direction – the vertically built coupons showed lower proof strengths than the horizontal coupons. The axial resistances of the PBF CHS are safely predicted by the EN 1993-1-4 design provisions and the deformation-based continuous strength method (CSM).
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