Hole-Boosted Cu(Cr,M)O2 Nanocrystals for All-Inorganic CsPbBr3 Perovskite Solar Cells
Hole-Boosted Cu(Cr,M)O2 Nanocrystals for All-Inorganic CsPbBr3 Perovskite Solar Cells
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DOI：
10.1002/anie.201910843
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发表时间：
2019-11-04
影响因子：
16.6
通讯作者：
Tang, Qunwei
中科院分区：
文献类型：
--
作者：
Duan, Jialong;Zhao, Yuanyuan;Tang, Qunwei
全无机CsPbBr 3钙钛矿太阳能电池（PSC）是平衡最先进的有机-无机PSC的高效率和差稳定性的有前途的解决方案。在钙钛矿/电极界面处设置无机空穴传输层减少了电荷载流子复合，而不牺牲在空气中的优势。现在，M取代的p型无机Cu（Cr，M）O-2（M = Ba 2+，Ca 2+或Ni 2+）纳米晶体通过增加间隙氧而具有增强的空穴传输特性，从而有效地从钙钛矿中提取空穴。具有FTO/c-TiO 2/m-TiO 2/CsPbBr 3/Cu（Cr，M）O-2/C结构的全无机CsPbBr 3 PSC的效率达到10.18%，通过在钙钛矿卤化物中掺杂Sm 3+离子，其效率提高到10.79%，远高于无空穴器件的7.39%。未包封的Cu（Cr，Ba）O-2基PSC在空气中80%湿度下60天或80 ℃条件下40天或光照下7天表现出显著的稳定性。
The all-inorganic CsPbBr3 perovskite solar cell (PSC) is a promising solution to balance the high efficiency and poor stability of state-of-the-art organic-inorganic PSCs. Setting inorganic hole-transporting layers at the perovskite/electrode interface decreases charge carrier recombination without sacrificing superiority in air. Now, M-substituted, p-type inorganic Cu(Cr,M)O-2 (M = Ba2+, Ca2+, or Ni2+) nanocrystals with enhanced hole-transporting characteristics by increasing interstitial oxygen effectively extract holes from perovskite. The all-inorganic CsPbBr3 PSC with a device structure of FTO/c-TiO2/m-TiO2/CsPbBr3/Cu(Cr,M)O-2/carbon achieves an efficiency up to 10.18% and it increases to 10.79% by doping Sm3+ ions into perovskite halide, which is much higher than 7.39% for the hole-free device. The unencapsulated Cu(Cr,Ba)O-2-based PSC presents a remarkable stability in air in either 80% humidity over 60 days or 80 degrees C conditions over 40 days or light illumination for 7 days.