SnS44鈥? SbS43鈥? and AsS33鈥?Metal Chalcogenide Surface Ligands: Couplings to Quantum Dots, Electron Transfers, and All-Inorganic Multilayered Quantum Dot Sensitized Solar Cells

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• 作者：Ho Jin ; Sukyung Choi ; Guichuan Xing ; Jung-Hoon Lee ; Yongju Kwon ; Wee Kiang Chong ; Tze Chien Sum ; Hyun Myung Jang ; Sungjee Kim
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：November 4, 2015
• 年：2015
• 卷：137
• 期：43
• 页码：13827-13835
• 全文大小：462K
• ISSN：1520-5126

文摘

Three inorganic capping ligands (ICLs) for quantum dots (QDs), SnS₄^{4鈥?/sup>, SbS₄3鈥?/sup> and AsS₃3鈥?/sup>, were synthesized and the energy levels determined. Proximity between the ICL LUMO and QD conduction level governed the electronic couplings such as absorption shift upon ligand exchange, and electron transfer rate to TiO₂. QD-sensitized solar cells were fabricated, using the ICL-QDs and also using QD multilayers layer-by-layer assembled by bridging coordinations, and studied as a function of the ICL ligand and the number of QD layers.}