材料科学
氧化铟锡
电极
薄板电阻
光电子学
能量转换效率
钙钛矿(结构)
光伏系统
制作
电导率
纳米技术
薄膜
图层(电子)
化学工程
电气工程
医学
化学
替代医学
物理化学
病理
工程类
作者
Lei Li,Peng Chen,Rui Su,Hongxing Xu,Qiuyang Li,Qixuan Zhong,Haoming Yan,Xiaoyu Yang,Juntao Hu,Shunde Li,Tianyu Huang,Yun‐Feng Xiao,Bin Liu,Yongqiang Ji,Dengke Wang,Huiliang Sun,Xugang Guo,Zheng‐Hong Lu,Henry J. Snaith,Qihuang Gong,Lichen Zhao,Rui Zhu
标识
DOI:10.1002/adma.202305238
摘要
Abstract The limited conductivity of existing transparent conducting oxide (TCO) greatly restricts the further performance improvement of perovskite solar cells (PSCs), especially for large‐area devices. Herein, buried‐metal‐grid tin‐doped indium oxide (BMG ITO) electrodes are developed to minimize the power loss caused by the undesirable high sheet resistance of TCOs. By burying 140‐nm‐thick metal grids into ITO using a photolithography technique, the sheet resistance of ITO is reduced from 15.0 to 2.7 Ω sq −1 . The metal step of BMG over ITO has a huge impact on the charge carrier transport in PSCs. The PSCs using BMG ITO with a low metal step deliver power conversion efficiencies (PCEs) significantly better than that of their counterparts with higher metal steps. Moreover, compared with the pristine ITO‐based PSCs, the BMG ITO‐based PSCs show a smaller PCE decrease when scaling up the active area of devices. The parallel‐connected large‐area PSCs with an active area of 102.8 mm 2 reach a PCE of 22.5%. The BMG ITO electrodes are also compatible with the fabrication of inverted‐structure PSCs and organic solar cells. The work demonstrates the great efficacy of improving the conductivity of TCO by BMG and opens up a promising avenue for constructing highly efficient large‐area PSCs.
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