The Dawn of Lead-Free Perovskite Solar Cell: Highly Stable Double Perovskite Cs(2)AgBiBr(6) Film.

The Dawn of Lead-Free Perovskite Solar Cell: Highly Stable Double Perovskite Cs(2)AgBiBr(6) Film.
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无铅钙钛矿太阳能电池的曙光:高稳定双钙钛矿Cs2AgBiBr6薄膜

DOI:
10.1002/advs.201700759
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发表时间:
2018-03
期刊:
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:
--
通讯作者:
Xiao L
Xiao L
中科院分区:
其他
文献类型:
--
作者:
Wu C;Zhang Q;Liu Y;Luo W;Guo X;Huang Z;Ting H;Sun W;Zhong X;Wei S;Wang S;Chen Z;Xiao L

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近年来,无铅双钙钛矿材料因其固有的热力学稳定性、合适的带隙、小的载流子有效质量和低的激子结合能而成为一种有前途的环境友好型光伏材料。然而,由于薄膜处理方面的挑战,目前还没有基于这些双钙钛矿的太阳能电池的报道。本文报道了首次在常温下用低压辅助溶液法制备了具有高质量Cs2AgBiBr6薄膜的无铅双钙钛矿平面异质结太阳电池。该器件的最佳功率转换效率为1.44%。初步的效率和在常温下无封装的高稳定性,以及工艺简单的高薄膜质量,展示了无铅钙钛矿型太阳能电池的前景。
Recently, lead‐free double perovskites have emerged as a promising environmentally friendly photovoltaic material for their intrinsic thermodynamic stability, appropriate bandgaps, small carrier effective masses, and low exciton binding energies. However, currently no solar cell based on these double perovskites has been reported, due to the challenge in film processing. Herein, a first lead‐free double perovskite planar heterojunction solar cell with a high quality Cs2AgBiBr6 film, fabricated by low‐pressure assisted solution processing under ambient conditions, is reported. The device presents a best power conversion efficiency of 1.44%. The preliminary efficiency and the high stability under ambient condition without encapsulation, together with the high film quality with simple processing, demonstrate promise for lead‐free perovskite solar cells.
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