| Title | Unravelling Alkali-Metal-Assisted Domain Distribution of Quasi-2D Perovskites for Cascade Energy Transfer toward Efficient Blue Light-Emitting Diodes |
| Authors | Cai, Wanqing Ali, Muhammad Umair Liu, Ping He, Miao Zhao, Cong Chen, Ziming Zang, Yue Tang, Man-Chung Meng, Hong Fu, Hongyan Wei, Guodan Yip, Hin-Lap |
| Affiliation | Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst TBSI, Shenzhen 518055, Peoples R China Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Sch Mat Sci & Engn, 381 Wushan Rd, Guangzhou 510640, Peoples R China Peking Univ, Sch Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong 999077, Peoples R China City Univ Hong Kong, Sch Energy & Environm, Kowloon, Hong Kong 999077, Peoples R China |
| Keywords | LEAD-HALIDE PEROVSKITES HIGH-PERFORMANCE SOLAR-CELLS NANOCRYSTALS PASSIVATION DYNAMICS DESIGN |
| Issue Date | May-2022 |
| Publisher | ADVANCED SCIENCE |
| Abstract | Solution processable quasi-2D (Q-2D) perovskite materials are emerging as a promising candidate for blue light source in full-color display applications due to their good color saturation property, high brightness, and spectral tunability. Herein, an efficient energy cascade channel is developed by introducing sodium bromide (NaBr) in phenyl-butylammonium (PBA)-containing mixed-halide Q-2D perovskites for a blue perovskite light-emitting diode (PeLED). The incorporation of alkali metal contributes to the nucleation and growth of Q-2D perovskites into graded distribution of domains with different layer number |
| URI | http://hdl.handle.net/20.500.11897/643389 |
| DOI | 10.1002/advs.202200393 |
| Indexed | SCI(E) |
| Appears in Collections: | 新材料学院 |
