Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells

Nanoscale Research Letters

Lung-Chien Chen¹  Kuan-Lin Lee¹  Zong-Liang Tseng¹  Chien-Feng Hsu¹  Yu-Ting Kao¹  Xiao Hong Sun²  Wen-Ti Wu³ 

[1] Department of Electro-Optical Engineering, National Taipei University of Technology;Henan Key Lab of Laser and Opto-electric Information Technology, School of Information Engineering, Zhengzhou University;Institute of Chemistry, Academia Sinica;

关键词: Solar cells;    Perovskite;    CH3NH3PbI3;    Two-step deposition;   

DOI  :  10.1186/s11671-018-2556-8

来源: DOAJ

【 摘 要 】

Abstract In this study, the perovskite layers were prepared by two-step wet process with different CH3NH3I (MAI) concentrations. The cell structure was glass/FTO/TiO2-mesoporous/CH3NH3PbI3 (MAPbI3)/spiro-OMeTAD/Ag. The MAPbI3 perovskite films were prepared using high and low MAI concentrations in a two-step process. The perovskite films were optimized at different spin coating speed and different annealing temperatures to enhance the power conversion efficiency (PCE) of perovskite solar cells. The PCE of the resulting device based on the different perovskite morphologies was discussed. The PCE of the best cell was up to 17.42%, open circuit voltage of 0.97 V, short current density of 24.06 mA/cm2, and fill factor of 0.747.

【 授权许可】

Unknown