材料科学
锚固
串联
钙钛矿(结构)
硅
共轭体系
分子
纳米技术
氧化物
能量转换效率
冠军
偶极子
导电体
氧化锡
氧化铟锡
光伏系统
光电子学
氧化钛
半导体
透明导电膜
混合太阳能电池
兴奋剂
聚合物太阳能电池
色素敏化染料
能量转换
磁滞
化学工程
作者
Tan Yan,Enbo Zhou,Chi Li,Yanyi Zhong,Jiangbin Zhang,Kai Han,Zhenyu Jiang,Rui Lin,Peng Gao,Xinhua Ouyang
标识
DOI:10.1002/adfm.202522599
摘要
Abstract The solution‐processible perovskite materials, utilizing the existing silicon infrastructure for perovskite/silicon tandem solar cells (P/S‐TSCs), have attracted significant interest due to their low‐cost and high efficiency. Hole‐selective layers (HSLs) are essential for charge extraction and transport in P/S‐TSCs. However, conventional HSLs often encounter issues such as poor conductivity, energy level mismatch, and incomplete coverage on textured surfaces. In this regard, a novel fully conjugated biscarboxylate‐anchored self‐assembled molecule with limited acidity, 5‐(9H‐dibenzo[a,c]carbazol‐9‐yl)‐isophthalic acid (IPAPhCz), is developed to enhance interaction with the conductive oxide of ITO (Indium tin oxide), which forms a uniform and conformal coverage that significantly improves the crystalline quality of the top perovskite. Additionally, IPAPhCz features a large tilted dipole moment with optimized energy alignment for hole extraction. The resulting 1.68 eV single‐junction PSC achieved a champion power conversion efficiency (PCE) of 22.78%, an increase of ≈10.37% over devices using 4PACz (PCE = 20.64%). Furthermore, textured P/S‐TSCs based on IPAPhCz reached a champion PCE of 31.80% (≈1 cm 2 ), reflecting a ≈9.58% enhancement compared to that on 4PACz (PCE = 29.02%). Both devices incorporating IPAPhCz demonstrated improved stability. The findings present a significant methodology for the design of high‐performance HSL materials for textured P/S‐TSCs.
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