Lifetime multiplier of dye-sensitized solar cell: Origin of performance degradation and the core photoelectric conversion interface reconstruction
Lifetime multiplier of dye-sensitized solar cell: Origin of performance degradation and the core photoelectric conversion interface reconstruction
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染料敏化太阳能电池的寿命倍增器：性能退化的根源与核心光电转换界面重构
DOI：
10.1016/j.electacta.2018.05.092
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发表时间：
2018-08
影响因子：
6.6
通讯作者：
Junhong Duan
中科院分区：
文献类型：
--
作者：
Weiqing Liu;Yujing Liu;Yuqian Ai;Fei Liu;Junhong Duan
染料敏化太阳能电池（DSC）寿命退化的机理尚不清楚，目前仍没有有效的解决方法。本文在DSC器件组装并持续近700 h后，通过电擦除对Dyed-NSF/El界面进行了重构，结果表明电池的光伏性能可以再生。同时利用电化学阻抗谱分析了降解和再生过程中内部电子传递和转移阻抗、表面态缺陷等的变化，推断了细胞降解和再生的内在原因。结果表明，Dyeed-NSF/EL界面结构和性能的变化是导致性能下降的根源。本文的结果提供了一种潜在的技术，可以导致设备寿命的显着增加，使DSC不再是一次性电池。
The mechanism for the deterioration of the lifetime of dye-sensitized solar cell (DSC) is not clear yet, and there is still no effective way to solve the current situation. In this paper, after the DSC device was assembled and lasted for nearly 700 h, the Dyed-NSF/El interface was reconstructed by electrical erasing and the results showed that the photovoltaic performance of the cell could be regenerated. At the same time, electrochemical impedance spectroscopy was used to analyze the changes of internal electron transport and transfer impedance, surface state defects, etc. in the process of degradation and regeneration, and inferred internal causes of cell degradation and regeneration. It was confirmed that the changes in the structure and properties of Dyed-NSF/El interface was the origin of performance degradation. The results of this paper provide a potential technology that could lead to a significant increase in device lifetime and make DSC no longer a disposable cell.
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