Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 10, Pages 4300-4307Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b10901
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Funding
- National Natural Science Foundation of China [21421004, 21771063]
- State Key Research Development Program of China [2016YFA0204200]
- Shanghai Municipal Science and Technology Major Project [2018SHZDZX03]
- Programme of Introducing Talents of Discipline to Universities [B16017]
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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.
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