| Improved Performance of Solid-State Gratzel Solar Cell by Cosensitization of Quantum Dot and Dye |
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| 作者姓名： | LIBin WANGLi-Duo LIJiang-Wei QIUYong |
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| 作者单位： | [1]DepartmentofChemistry,TsinghuaUniversity,Beijing100084 [2]KeyLabofOrganicOptoelectronics＆MolecularEngineeringofMinistryofEducation,Beijing100084 |
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| 摘 要： | We report a new cosensitization utilizing quantum dot (QD) PbS and Cis-(SCN)2Bis(2,2‘-bipyridyl-4,4‘-dicarboxylate) ruthenium (N3) dye on the nanoporous Ti02 film. Solid-state Gratzel solar cells with the cosensitized films show an improved overall efficiency by 200% relative to the cells assembled with only N3 sensitization and an extremely high open-circuit voltage of 840mV, and a fill factor of 70.5~. Back reaction characteristics of the above cells are also investigated, demonstrating a great suppression of recombination due to cosensitization. It seems that the cosensitization also facilitates the electron injection into the conduction band of TiO2.
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| 关 键 词： | 量子点 量子染色 太阳能电池 电子注射 硫化铅 二氧化钛胶体色散 |
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