| Title | Achieving highly efficient all-polymer solar cells by green-solvent-processing under ambient atmosphereY |
| Authors | Liu, Bin Sun, Huiliang Lee, Jin-Woo Yang, Jie Wang, Junwei Li, Yongchun Li, Bangbang Xu, Meng Liao, Qiaogan Zhang, Wei Han, Dongxue Niu, Li Meng, Hong Kim, Bumjoon J. Guo, Xugang |
| Affiliation | Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China Guangzhou Univ, Sch Chem & Chem Engn, Ctr Adv Analyt Sci, Guangzhou 510006, Peoples R China Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea |
| Keywords | POWER CONVERSION EFFICIENCY PERFORMANCE ACCEPTORS |
| Issue Date | Jun-2021 |
| Publisher | ENERGY & ENVIRONMENTAL SCIENCE |
| Abstract | All-polymer solar cells (all-PSCs) exhibiting superior device stability and mechanical robustness have attracted considerable interest. Emerging polymerized small-molecule acceptors (PSMAs) have promoted the progress of all-PSCs exceeding a power conversion efficiency (PCE) of 14%. However, most of the all-PSCs are processed with halogenated solvents that are hazardous towards humans and the environment. Herein, halogen-free processing solvents of CS2, 1,2,4-TMB and o-XY are utilized for producing eco-friendly and highly efficient all-PSCs. In particular, o-XY solvent-processed all-PSCs achieve a high PCE of 15.6%, which is among the highest values in green-solvent-processed all-PSCs to date. Detailed investigations reveal that such enhancement is mainly attributed to the optimal blend morphology and polymer crystalline structures, which is resulted from aggregated structures of polymers formed in o-XY. Importantly, o-XY-processed-all-PSCs are successfully fabricated in ambient conditions, affording a high PCE approaching 15.0%. This work highlights the importance of green solvent strategy in controlling the polymer aggregated structures and blend film morphology of all-PSCs, paving the way towards high-performance and eco-friendly all-PSCs for practical applications. |
| URI | http://hdl.handle.net/20.500.11897/618408 |
| ISSN | 1754-5692 |
| DOI | 10.1039/d1ee01310f |
| Indexed | SCI(E) |
| Appears in Collections: | 深圳研究生院待认领 |
