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Title: Scalable processing for realizing 21.7%-efficient all-perovskite tandem solar modules.
Authors: Xiao, Ke
Lin, Yen-Hung
Zhang, Mei
Oliver, Robert DJ
Wang, Xi
Liu, Zhou
Luo, Xin 
Li, Jia
Lai, Donny 
Luo, Haowen
Lin, Renxing
Xu, Jun
Hou, Yi
Snaith, Henry J
Tan, Hairen
Issue Date: 13-May-2022
Publisher: American Association for the Advancement of Science (AAAS)
Citation: Xiao, Ke, Lin, Yen-Hung, Zhang, Mei, Oliver, Robert DJ, Wang, Xi, Liu, Zhou, Luo, Xin, Li, Jia, Lai, Donny, Luo, Haowen, Lin, Renxing, Xu, Jun, Hou, Yi, Snaith, Henry J, Tan, Hairen (2022-05-13). Scalable processing for realizing 21.7%-efficient all-perovskite tandem solar modules.. Science 376 (6594) : 762-767. ScholarBank@NUS Repository.
Abstract: Challenges in fabricating all-perovskite tandem solar cells as modules rather than as single-junction configurations include growing high-quality wide-bandgap perovskites and mitigating irreversible degradation caused by halide and metal interdiffusion at the interconnecting contacts. We demonstrate efficient all-perovskite tandem solar modules using scalable fabrication techniques. By systematically tuning the cesium ratio of a methylammonium-free 1.8-electron volt mixed-halide perovskite, we improve the homogeneity of crystallization for blade-coated films over large areas. An electrically conductive conformal "diffusion barrier" is introduced between interconnecting subcells to improve the power conversion efficiency (PCE) and stability of all-perovskite tandem solar modules. Our tandem modules achieve a certified PCE of 21.7% with an aperture area of 20 square centimeters and retain 75% of their initial efficiency after 500 hours of continuous operation under simulated 1-sun illumination.
Source Title: Science
ISSN: 00368075
DOI: 10.1126/science.abn7696
Appears in Collections:Staff Publications

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