材料科学
钙钛矿(结构)
光伏
结晶
能量转换效率
光电子学
卤化物
共振(粒子物理)
光伏系统
纳米技术
化学工程
无机化学
电气工程
化学
物理
粒子物理学
工程类
作者
Ligang Xu,Haodong Ji,Wei Qiu,Xin Wang,Yan Liu,Yuanhao Li,Jing Li,Xin Zhang,Daiquan Zhang,Jiexue Wang,Ye Tao,Meicheng Li,Runfeng Chen
标识
DOI:10.1002/adma.202301752
摘要
Upscaling efficient and stable perovskite films is a challenging task in the industrialization of perovskite solar cells partly due to the lack of high-performance hole transport materials (HTMs), which can simultaneously promote hole transport and regulate the quality of perovskite films especially in inverted solar cells. Here, a novel HTM based on N-C = O resonance structure is designed for facilitating the modulation of the crystallization and bottom-surface defects of perovskite films. Benefiting from the resonance interconversion (N-C = O and N+ = C-O- ) in donor-resonance-donor (D-r-D) architecture and interactions with uncoordinated Pb2+ in perovskite, the resulting D-r-D HTM with two donor units exhibits not only excellent hole extraction and transport capacities, but also efficient crystallization modulation of perovskite for high-quality photovoltaic films in large area. The D-r-D HTM-based large-area (1.02 cm2 ) devices exhibit high power conversion efficiencies (PCEs) up to 21.0%. Moreover, the large-area devices have excellent photo-thermal stability, showing only a 2.6% reduction in PCE under continuous AM 1.5G light illumination at elevated temperature (≈65 °C) for over 1320 h without encapsulation.
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