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
复制标题
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
中科院分区:
文献类型:
--
作者:
Liu Kong;Lu Shudi;Yue Shizhong;Ren Kuankuan;Azam Muhammad;Tan Furui;Wang Zhijie;Qu Shengchun;Wang Zhanguo
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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