钙钛矿(结构)
材料科学
群(周期表)
结晶学
量子力学
化学
物理
作者
Ge Cheng,Xihan Chen,Jie Zeng,Huaxin Wang,Haiyun Li,Qingkai Qian,Cong Zhang,Qixin Zhuang,Xuemeng Yu,Shaokuan Gong,Hua Yang,Baomin Xu,Jiangzhao Chen,Zhigang Zang
标识
DOI:10.1002/adma.202307422
摘要
In two-dimensional/three-dimensional (2D/3D) perovskite heterostructure, randomly distributed multiple quantum wells (QW) 2D perovskites are frequently generated, which are detrimental to carrier transport and structural stability. Here, the high quality 2D/3D perovskite heterostructure is constructed by fabricating functional-group-induced single QW Dion-Jacobson (DJ) 2D perovskites. The utilization of ─OCH3 in the precursor solution facilitates the formation of colloidal particles with uniform size, resulting in the production of a pure 2D DJ perovskite with an n value of 3. This strategy facilitates the improvement of 3D structural stability and expedites carrier transport. The resultant devices accomplish a power conversion efficiency of 25.26% (certified 25.04%) and 23.56% at a larger area (1 cm2 ) with negligible hysteresis. The devices maintain >96% and >89% of their initial efficiency after continuous maximum power point tracking under simulated AM1.5 illumination for 1300 h and under damp-heat conditions (85 °C and 85% RH) for 1010 h, respectively.
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