The effect of Ni(CH3COO)2 post-treatment on the charge dynamics in p-type NiO dye-sensitized solar cells
2015
Liu, Qian | Wei, Lifang | Yuan, Shuai | Ren, Xin | Zhao, Yin | Wang, Zhuyi | Zhang, Meihong | Shi, Liyi | Li, Dongdong
The present work reports a simple Ni(CH₃COO)₂ post-treatment method, meanwhile represents a series of characterizations of bare and post-treated NiO photocathodes. The investigation enlightens the mechanisms responsible for NiO surface changes and its effects on the charge density, band-edge shifts, hole injection efficiency, interface recombination, transport, collection efficiency, and as the result influence on the photovoltaic devices’ performance. The primary results demonstrate that Ni(CH₃COO)₂ post-treatment can offer an effective way of decreasing surface NiO(OH) structure, resulting in diminishing the hole recombination, increasing the charge collection efficiency, and leading to 31.3 % increased photovoltaic performance.
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