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- W2905156986 abstract "In this work, we present a new design for the development of quantum dot sensitized solar cells with a CuSe/CuxS substrate on F-doped tin oxide as the counter electrode. The best performing CuSe/Cu0.78S counter electrode notably achieves a photoelectric conversion efficiency of 5.70% with a significant improvement in the JSC for the CdS/CdSe co-sensitized solar cells, superior to a cell with CuSe (4.80%) or Cu0.78S (4.11%) as the counter electrodes. Two types of reverse barriers, including a positive reverse barrier and negative reverse barrier, at the interface between the CuxS and CuSe are investigated using solid-state measurements from a dark current–voltage test. The transient photovoltage responses and Kelvin probe measurements further demonstrate reduction of the positive reverse barrier between the CuSe and CuxS interface with increasing Cu/S ratios of CuxS (x = 0.52–0.78), which is beneficial to the electron transfer from CuxS to CuSe. The electrochemical catalytic activity and stability of the CuSe/CuxS counter electrodes are verified with electrochemical impedance spectroscopy, tafel polarization and cyclic voltammetry results, which suggest that CuSe/CuxS counter electrodes have promising applications in solar cells." @default.
- W2905156986 created "2018-12-22" @default.
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- W2905156986 date "2019-02-01" @default.
- W2905156986 modified "2023-10-16" @default.
- W2905156986 title "CuSe/CuxS as a composite counter electrode based on P-N heterojunction for quantum dot sensitized solar cells" @default.
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- W2905156986 doi "https://doi.org/10.1016/j.jpowsour.2018.12.027" @default.
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