Lead halide perovskite solar cells have recently attracted tremendous attention because of their excellent photovoltaic efficiencies. However, the poor stability of both the perovskite material and the charge transport layers has so far prevented the fabrication of devices that can withstand sustained operation under normal conditions. Here, we report a solution-processed lead halide perovskite solar cell that has p-type NiOx and n-type ZnO nanoparticles as hole and electron transport layers, respectively, and shows improved stability against water and oxygen degradation when compared with devices with organic charge transport layers. Our cells have a p–i–n structure (glass/indium tin oxide/NiOx/perovskite/ZnO/Al), in which the ZnO layer isolates the perovskite and Al layers, thus preventing degradation. After 60 days storage in air at room temperature, our all-metal-oxide devices retain about 90% of their original efficiency, unlike control devices made with organic transport layers, which undergo a complete degradation after just 5 days. The initial power conversion efficiency of our devices is 14.6 ± 1.5%, with an uncertified maximum value of 16.1%.

Nature Nanotechnology 11, 75–81 (2016) doi:10.1038/nnano.2015.230
Received 06 January 2015 Accepted 03 September 2015 Published online 12 October 2015

论文链接：http://www.nature.com/nnano/journal/v11/n1/abs/nnano.2015.230.html
中文报道链接：
http://mp.weixin.qq.com/s?__biz=MzA3NjIwODA1Nw==&mid=402055155&idx=7&sn=42167816c25079021f0a847b2e9e255a&scene=0#wechat_redirect