Wrinkled substrate and Indium Tin Oxide-free transparent electrode making organic solar cells thinner in active layer

Wrinkled substrate and Indium Tin Oxide-free transparent electrode making organic solar cells thinner in active layer
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褶皱基板和不含氧化铟锡的透明电极使有机太阳能电池的活性层更薄

DOI:
10.1016/j.jpowsour.2016.09.038
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发表时间:
2016-11
影响因子:
9.2
通讯作者:
Wang Zhanguo
Wang Zhanguo
中科院分区:
工程技术2区
文献类型:
--
作者:
Liu Kong;Lu Shudi;Yue Shizhong;Ren Kuankuan;Azam Muhammad;Tan Furui;Wang Zhijie;Qu Shengchun;Wang Zhanguo

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为了使有机太阳能电池具有合适的电荷传输效率,在不牺牲光吸收效率的情况下减小有源层的厚度具有很高的可行性。本文设计了褶皱金属表面上的有机太阳能电池。表面光滑的褶皱Al/Au薄膜为构建薄有机光伏器件提供了独特的支架,避免了传统纳米结构尖锐边缘周围的针孔和缺陷。相应的表面光捕获效应使得薄有源层(PTB7-Th:PC71BM)具有较高的吸收效率。采用创新的MoO3/Ag/ZnS薄膜作为顶部透明电极,得到的无铟锡氧化物皱化器件的功率转换效率为7.57% (50 nm有源层),高于规划器件。因此,本文提供了一种新的方法来提高有机太阳能电池的性能,通过平衡相互制约因素到较高的水平。
To enable organic solar cells with a competent charge transport efficiency, reducing the thickness of active layer without sacrificing light absorption efficiency turns out to be of high feasibility. Herein, organic solar cells on wrinkled metal surface are designed. The purposely wrinkled Al/Au film with a smooth surface provides a unique scaffold for constructing thin organic photovoltaic devices by avoiding pinholes and defects around sharp edges in conventional nanostructures. The corresponding surface light trapping effect enables the thin active layer (PTB7-Th:PC71BM) with a high absorption efficiency. With the innovative MoO3/Ag/ZnS film as the top transparent electrode, the resulting Indium Tin Oxide-free wrinkled devices show a power conversion efficiency as 7.57% (50 nm active layer), higher than the planner counterparts. Thus, this paper provides a new methodology to improve the performance of organic solar cells by balancing the mutual restraint factors to a high level.
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