Improving the performance of solar cells by optimizing the interface of SnO2/perovskite layer using sodium citrate
Abstract
Interface engineering is an important means of modifying perovskite solar cells (PSCs). In this paper, a strategy for modifying the SnO2/perovskite interface transport layer using sodium citrate (SC), an organic sodium salt, was proposed. The optimal power conversion efficiency was 22.55%, 9.3% higher than that of devices without SC modification. The open circuit voltage (Voc) reaches a respectable 1.20 V. This method enhances the conductivity of thin SnO2 films with inert photocatalytic performance, improves the crystallinity of perovskite, and increases the grain size, thereby meliorating the performance and stability of PSCs.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (6)
Yongqi Zhang
College of Chemistry Fuzhou University Fuzhou 350116 China
Yueyan Wang
Ruilin Liu
Luzhen Li
The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University , Beijing 10048,
Peijie Wang
Key Laboratory of Terahertz Optoelectronics, Ministry of Education, and Beijing Advanced Innovation Center for Imaging Theory and Technology, Department of Physics, Capital Normal University 1 , Beijing 100048,
Lisheng Zhang
College of Electromechanical Engineering Qingdao University of Science and Technology Qingdao 266061 China