Efficient Polymer Solar Cells with Open-Circuit Voltage of 1.01 V and Power Conversion Efficiency of 8.09

Simei Zeng; Huixin Qi; Bohan Yu; Xiaoling Ma; Miao Zhang; Jian Wang; Fujun Zhang

doi:10.1021/acsomega.8b01925

Efficient Polymer Solar Cells with Open-Circuit Voltage of 1.01 V and Power Conversion Efficiency of 8.09

ACS Omega. 2018 Sep 21;3(9):11562-11568. doi: 10.1021/acsomega.8b01925. eCollection 2018 Sep 30.

Authors

Simei Zeng¹, Huixin Qi¹, Bohan Yu¹, Xiaoling Ma¹, Miao Zhang¹, Jian Wang², Fujun Zhang¹

Affiliations

¹ Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, People's Republic of China.
² College of Physics and Electronic Engineering, Taishan University, Taian 271021, People's Republic of China.

Abstract

A series of polymer solar cells (PSCs) were prepared with different solvent additive 1-chloronaphthalene (CN) doping volume ratio to adjust the phase separation of active layers. The optimized PSCs exhibit a power conversion efficiency (PCE) of 8.09%, along with an open-circuit voltage of 1.01 V, a short circuit current density of 13.64 mA cm^-2, and a fill factor of 58.70%. All the key photovoltaic parameters of PSCs can be simultaneously increased by incorporating 1.0 vol % CN in blend solutions due to the optimized phase separation of active layers assisted by the volatilization of CN. Over 24% PCE improvement can be obtained by incorporating 1.0 vol % CN, indicating that the dynamic process of film forming should play the vital role in determining the performance of PSCs.