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Updated: Jul 31, 2025
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Hexachlorotriphosphazene-assisted buried interface passivation for stable and efficient wide-bandgap perovskite solar
Ruyue Wang1, Minghua Li1, Zongwen Ma1
1Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. tanzhanao@mail.buct.edu.cn.
Abstract:
Large open-circuit voltage (Voc) loss is the main issue limiting the efficiency improvement in wide bandgap perovskite solar cells (PerSCs). Herein, a facile buried interface treatment by hexachlorotriphosphazene is developed to suppress the Voc loss. The PerSCs include a [Cs0.22FA0.78Pb(I0.85Br0.15)3]0.97(MAPbCl3)0.03 (1.67 eV) absorber and deliver an efficiency of 21.47% and a Voc of 1.21 V (Voc loss of 0.46 V). More importantly, the unencapsulated PerSCs maintain 90% of the initial efficiency after aging 500 h in N2.
