串联
钙钛矿(结构)
材料科学
图层(电子)
光电子学
制作
带隙
载流子
纳米技术
化学
复合材料
结晶学
医学
病理
替代医学
作者
Xinming Zhou,Hongwei Lai,Ting Huang,Chaoran Chen,Zhenhua Xu,Jing Wang,Shaohang Wu,Xiudi Xiao,Lang Chen,Christoph J. Brabec,Yaohua Mai,Fei Guo
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2022-12-13
卷期号:8 (1): 502-512
被引量:24
标识
DOI:10.1021/acsenergylett.2c02156
摘要
Although the efficiencies of all-perovskite tandem solar cells have surpassed 26%, further advancement of device performance is constrained by the large photovoltage deficit in wide-band-gap perovskite subcells. Meanwhile, state-of-the-art charge recombination layers incorporate an additional thin metal film (Au or Ag), which not only complexes device fabrication but induces parasitic optical losses. Here, we first fabricate efficient wide-band-gap perovskite solar cells (PSCs) with by suppressing nonradiative losses both in bulk material and at interface. The prepared PSCs with a band gap of 1.71 eV yield an impressive open-circuit voltage (VOC) of 1.27 V, giving a small VOC deficit of 0.44 V and an efficiency of 20.8%. We then fabricate monolithic all-printed perovskite tandem devices by constructing a metal-free recombination layer, which yields an efficiency of 23.65% and a high VOC of 2.05 V. This work offers a simple yet effective charge recombination architecture for advancing the performance of all-perovskite tandem devices.
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