文献类型：期刊文献

英文题名：Facile Secondary Deposition for Improving Quantum Dot Loading in Fabricating Quantum Dot Solar Cells

作者：Wang, Wei[1,2];Zhao, Lianjing[1,2];Wang, Yuan[1,2];Xue, Weinan[1,2];He, Fangfang[1,2];Xie, Yiling[1,2];Li, Yan[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：141

期号：10

起止页码：4300

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20191106639392);WOS:【SCI-EXPANDED(收录号:WOS:000461537700023)】；

基金：This research is supported by the National Natural Science Foundation of China (21421004 and 21771063), the State Key Research Development Program of China (2016YFA0204200), the Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), and the Programme of Introducing Talents of Discipline to Universities (B16017). Meanwhile, we thank Dr. Donghui Long and Dr. Mingqi Chen for providing mesoporous carbon materials.

语种：英文

外文关键词：Copper compounds - Nanocrystals - Selenium compounds - Indium compounds - Loading - Zinc compounds - Solar cells - Semiconductor quantum dots - Surface active agents - Titanium dioxide - Fabrication - Electrodes

摘要：Sufficient loading of presynthesized quantum dots (QDs) on mesoporous TiO2 electrodes is the prerequisite for the fabrication of high-performance QD-sensitized solar cells (QDSCs). Here, we provide a general approach for increasing QD loading on mesoporous TiO2 films by surface engineering. It was found that the zeta potential of presensitized TiO2 can be effectively adjusted by surfactant treatment, on the basis of which additional QDs are successfully introduced onto photoanodes during secondary deposition. The strategy developed, that is, the secondary deposition incorporating surfactant treatment, makes it possible to load various QDs onto photoanodes regardless of the nature of QDs. In standard AM 1.SG sunlight, a certified efficiency of 10.26% for the QDSC with Cu2S/brass counter electrodes was achieved by the secondary deposition of Zn-Cu-In-Se QDs.