Interdigitated Hierarchical Integration of an Efficient Lateral Perovskite Single‐Crystal Solar Cell

• DOI: 10.1002/cssc.201903038
• Publication Date: 2020-02-06T10:40:41Z
• Authors: Jinseon Park; Yeong Eun Bak; Lynn Lee; Hyosung Choi; Mahmood Alam Khan; Myung M. Sung
• Keywords: Perovskite solar cell; Crystal (programming language); Auxiliary electrode

Abstract Single‐crystal perovskite thin films were prepared by a scalable, one‐step, geometrically confined lateral crystal growth (GC‐LCG) method on patterned rolling mold and used for photovoltaic study. A record solar cell efficiency of 9.50 % under 0.1 sun with an electrode spacing 1.5 μm is attained in single‐crystal materials. Moreover, successful integration high‐source‐power‐generation interdigitated units series (1×4), parallel (4×1), combination (4 series×4 parallel) configurations devised affords maximum efficiencies 7.99, 8.19, 7.96 %, respectively. Additionally, the performances various illumination intensities (0.1, 0.2, 0.4, 0.6, 0.8, 1.0 sun) to mimic daily sunshine angles indoor environment at 1000 lux are elucidated which short‐circuit current ( J SC ) values (19.60 mA cm −2 η =7.43 %) significant 8.13 conditions obtained. This work represents step towards next‐generation, efficient, photovoltaics possible module integration.