Active Passivation Charge Transport in n‐i‐p Perovskite Solar Cells Approaching 26% Efficiency
Abstract
AbstractIn n‐i‐p planar perovskite solar cells (PSCs), the electron transport layer (ETL) and the hole transporting layer play a crucial role in realizing high power conversion efficiency (PCE). Herein, a TiO2‐SDBA‐SnO2 stacked ETL is reported, where 4,4′‐sulfonyldibenzoic acid (SDBA) serves as an active passivation agent to suppress charge recombination and enhance interface quality. SDBA effectively passivates oxygen vacancies in sputtered TiO2, while simultaneously promoting SnO2 nucleation and improving film quality. Moreover, its molecular structure increases the surface free energy of the ETL, facilitating the formation of high‐quality perovskite films with larger grain sizes and fewer defects. As a result, PSCs with this optimized ETL achieve a PCE of 25.94% with excellent stability. This approach also enables the fabrication of perovskite solar modules with a certified efficiency of 22.55% over a 26.02 cm2 aperture area.
Article Details
Authors (17)
Le Li
Jianjun Xu
Liver Transplant Center, Union Hospital, Tongji Medical College
Lei Fang
Zewu Feng
State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China
Hailong Huang
Yanbo Wang
Department of Materials Science and Engineering, City University of Hong Kong
Yansen Guo
State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China
Shuilong Kang
State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM)
Hui Wang
Yujie Han
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering
Yi Ji
State Key Laboratory of Catalysis
Huanyu Zhang
Yong Ding
School of Materials Science and Engineering
Mohammad Khaja Nazeeruddin
Bin Ding
National Key Laboratory of Strength and Structural Integrity, Institute of Solid Mechanics, School of Aeronautic Science and Engineering, Beihang University
Xiaohong Zhang
Jun Peng
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry