| Title | AIE Molecules UV-Filtering Effect Improves the Photostability of Organic Solar Cells |
| Authors | Zeng, Li Zhang, Lifu Mao, Liucheng Hu, Xiaotian Wei, Yen Tan, Licheng Chen, Yiwang |
| Affiliation | Nanchang Univ, Inst Polymers & Energy Chem IPEC, Coll Chem & Chem Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China Tsinghua Univ, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Minist Educ, Dept Chem, Beijing 100084, Peoples R China Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226010, Peoples R China Jiangxi Normal Univ, Natl Engn Res Ctr Carbohydrate Synth, Key Lab Fluorine & Silicon Energy Mat & Chem, Minist Educ, 99 Ziyang Ave, Nanchang 330022, Jiangxi, Peoples R China |
| Keywords | ZNO STABILITY PERFORMANCE LAYER PHOTODEGRADATION |
| Issue Date | Jul-2022 |
| Publisher | ADVANCED OPTICAL MATERIALS |
| Abstract | Due to the poor stability of organic solar cells (OSCs), especially ultraviolet light (UV) stability, they are not yet up to the standard for commercial applications. Inverted devices based on the ZnO electron transport layer (ETL) are relatively thermal- and air-stable, while their UV light stability is poor. Moreover, the active layer materials undergo severe degradation under UV light, which also causes the degradation of the device. Here, aggregation-induced emission (AIE) molecules as an optical barrier layer are coated between ZnO-ETL and active layer to fabricate efficient OSCs with excellent UV photostability. AIE molecules can avoid direct photodegradation of the active layer materials by absorbing UV light. At the same time, they can passivate the oxygen defects on the ZnO surface and prevent photocatalytic degradation of the active layer materials. Therefore, the ZnO/TPIZ-based devices maintain 84% of the original power conversion efficiency (PCE) with continuous irradiation by 5 mW cm(-2) UV light (365 nm) for 1500 h, and similarly T-80 for more than 700 h under 20 mW cm(-2) UV light exposure. Moreover, the ZnO/TPIZ-based devices also preserve excellent thermal stability accompanying the upgrading of PCE. |
| URI | http://hdl.handle.net/20.500.11897/649166 |
| ISSN | 2195-1071 |
| DOI | 10.1002/adom.202200968 |
| Indexed | SCI(E) |
| Appears in Collections: | 待认领 |
