Solvent polishing engineering for quasi-two-dimensional perovskite blue light-emitting diodes

• DOI: 10.1039/d2cc02268k
• Publication Date: 2022-05-21T02:20:58Z
• Authors: Yuting Xu; Lanlan Zhai; Lijuan Sun; Jingjing Wang; Xingxing Tan; He Huang; Yingyu Wang; Guanghong Yang; Kemin Jiang; Yun Yang; Lijie Zhang; Zhan’ao Tan; Chao Zou
• Keywords: Chemical Mechanical Planarization

Solvent polishing engineering is adopted to remove the relatively loose defect layer without damaging carrier injection in blue perovskite light-emitting-diodes (PeLEDs). Synchronously, effects depending on solvents are discussed detail. Finally, optimized PeLEDs were obtained with a maximum external quantum efficiency of 5.18%, high brightness 3737 cd m-2, and low turn-on voltage 3.2 V.