Efficient and Stable Tandem Solar Cells With Conformal Solution‐Processed Perovskite on Fully Textured Silicon
Abstract
Abstract Conformal deposition of perovskite on fully textured silicon bottom cells using low‐cost solution processing remains challenging, limiting the process compatibility and power conversion efficiency (PCE) of perovskite/silicon tandem solar cells. Herein, this challenge through synergetic engineering of the perovskite composition and tunneling recombination junction (TRJ) is addressed. The utilization of wide bandgap perovskite with high cesium content and silicon heterojunction (SHJ) bottom cell with hydrogenated nanocrystalline silicon (nc‐Si:H) TRJ is found to enable conformal perovskite on fully textured SHJ bottom cells using solution processing. A remarkable PCE of 33.38% (certified 32.94%) is achieved for the tandem, featuring a record short‐circuit current density of 21.21 mA cm −2 . The tandem displays excellent stability, retaining 80% of its initial efficiency after 2324 h of operation at maximum power point (AM 1.5G, 25 °C).
Article Details
Authors (30)
Cao Yu
Wei Shi
Zhiliang Liu
Shibo Wang
Zhenhai Yang
Ke Fan
Interdisciplinary Institute of NMR and Molecular Sciences, Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering
Kun Gao
Jun Yang
Minghui Li
Wenhao Li
Yao Li
Fengxian Cao
Liu Yang
Mingyu Ma
Hao Liang
Institute of Carbon Neutrality
Qunyu Bi
School of Optoelectronic Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University Suzhou 215006 China
Xingda An
Mengsha Cao
Suzhou Maxwell Technologies Co., Ltd. Suzhou 215200 P.R. China
Chen‐Wei Peng
Suzhou Maxwell Technologies Co. Ltd Suzhou Jiangsu 215200 China
Jian Zhou
Haitao Huang
Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Jiang Liu
Chuanxiao Xiao
Zhijun Ning
School of Physical Science and Technology
Yuan Cheng
Monash Suzhou Research Institute, Monash University, SIP, Suzhou, China.
Shaofei Yang
Kai Yao
School of Materials Science and Engineering
Stefaan De Wolf
Xinbo Yang
Xiaohong Zhang