钝化
工作职能
材料科学
X射线光电子能谱
光电子学
钙钛矿(结构)
退火(玻璃)
平面的
光伏
纳米技术
能量转换效率
电气工程
化学工程
计算机科学
图层(电子)
光伏系统
复合材料
工程类
计算机图形学(图像)
作者
Kevin J. Prince,Marco Nardone,Sean P. Dunfield,Glenn Teeter,Mirzo Mirzokarimov,Emily L. Warren,David T. Moore,Joseph J. Berry,Colin A. Wolden,Lance M. Wheeler
标识
DOI:10.1016/j.xcrp.2021.100363
摘要
All-back-contact (ABC) architectures for perovskite photovoltaics represent untapped potential for higher efficiency and enhanced durability compared to conventional planar architectures. Interface engineering can be more complex in ABC designs, because both the electron and hole transport layers (ETLs/HTLs) are simultaneously exposed during processing. Herein, we fabricate ABC perovskite solar cells with a non-stabilized current-voltage scan power conversion efficiency >10% by developing complementary interface processing. UV-ozone exposure followed by annealing increases the work function and reduces the defect density of the NiOx HTL and removed contamination from the TiO2 ETL, which increases voltage and current collection. We measure the chemical composition of each transport layer interface using photoelectron spectroscopy and then use the resulting trends to inform a two-dimensional drift-diffusion model. The model suggests that further reduction of charged interface defect density, increase in the hole selective contact work function, and passivation of the front surface will enable >20% of ABC devices.
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