An Unprecedented Efficiency with Approaching 21% Enabled by Additive-Assisted Layer-by-Layer Processing in Organic Solar Cells.
Shuai Xu, Youdi Zhang, Yanna Sun, Pei Cheng, Zhaoyang Yao, Ning Li, Long Ye, Lijian Zuo, Ke Gao
Author Information
Shuai Xu: Key Laboratory of Advanced Green Functional Materials, College of Chemistry, Changchun Normal University, Changchun, 130032, People's Republic of China.
Youdi Zhang: Key Laboratory of Advanced Green Functional Materials, College of Chemistry, Changchun Normal University, Changchun, 130032, People's Republic of China. zhangyd@ccsfu.edu.cn.
Yanna Sun: Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, People's Republic of China. ynsun@sdu.edu.cn.
Pei Cheng: College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
Zhaoyang Yao: State Key Laboratory and Institute of Elemento-Organic Chemistry, Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
Ning Li: Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, People's Republic of China.
Long Ye: Tianjin Key Laboratory of Molecular Optoelectronic Sciences, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, People's Republic of China.
Lijian Zuo: State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.
Ke Gao: Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, People's Republic of China. kegao@sdu.edu.cn.
Recently published in Joule, Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8% power conversion efficiency in organic solar cells (OSCs) with an interpenetrating fibril network active layer morphology, featuring a bulk p-i-n structure and proper vertical segregation achieved through additive-assisted layer-by-layer deposition. This optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion, reduces recombination losses, and enhances light capture capability. This approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.
