Park Jinseon, Bak Yeong Eun, Lee Lynn, Choi Hyosung, Khan Mahmood Alam, Sung Myung M
Department of Chemistry, Hanyang University, Seoul, 04763, Korea.
ChemSusChem. 2020 Apr 7;13(7):1882-1889. doi: 10.1002/cssc.201903038. Epub 2020 Feb 6.
Single-crystal perovskite thin films were prepared by a scalable, one-step, geometrically confined lateral crystal growth (GC-LCG) method on a patterned rolling mold and used for a photovoltaic study. A record solar cell efficiency of 9.50 % under 0.1 sun with an electrode spacing of 1.5 μm is attained in lateral single-crystal perovskite materials. Moreover, successful integration for high-source-power-generation interdigitated electrode units patterned in series (1×4), parallel (4×1), and combination (4 series×4 parallel) configurations is devised and affords maximum efficiencies of 7.99, 8.19, and 7.96 %, respectively. Additionally, the cell performances under various illumination intensities (0.1, 0.2, 0.4, 0.6, 0.8, 1.0 sun) to mimic daily sunshine angles and an indoor environment at 1000 lux are elucidated for which short-circuit current (J ) values (19.60 mA cm and η=7.43 %) under 1.0 sun and a significant efficiency of 8.13 % under indoor conditions are obtained. This work represents a significant step towards next-generation, efficient, lateral photovoltaics for possible module integration.
通过一种可扩展的一步法几何受限横向晶体生长（GC-LCG）方法，在图案化的滚动模具上制备了单晶钙钛矿薄膜，并用于光伏研究。在横向单晶钙钛矿材料中，实现了在0.1个太阳光照下，电极间距为1.5μm时9.50%的创纪录太阳能电池效率。此外，设计了用于高源发电的叉指电极单元的成功集成，其图案为串联（1×4）、并联（4×1）和组合（4串联×4并联）配置，分别提供了7.99%、8.19%和7.96%的最大效率。此外，还阐明了在各种光照强度（0.1、0.2、0.4、0.6、0.8、1.0个太阳）下模拟日常阳光角度和1000勒克斯室内环境时的电池性能，其中在1.0个太阳光照下获得了短路电流（J）值（19.60 mA cm且η = 7.43%），在室内条件下获得了8.13%的显著效率。这项工作代表了朝着用于可能的模块集成的下一代高效横向光伏迈出的重要一步。
