Portal de Periódicos da CAPES

50‐Fold EQE Improvement up to 6.27% of Solution‐Processed All‐Inorganic Perovskite CsPbBr 3 QLEDs via Surface Ligand Density Control

2016; Volume: 29; Issue: 5 Linguagem: Inglês

10.1002/adma.201603885

1521-4095

Jianhai Li, Leimeng Xu, Tao Wang, Jizhong Song, Jiawei Chen, Jie Xue, Yuhui Dong, Bo Cai, Qingsong Shan, Boning Han, Haibo Zeng,

Organic Light-Emitting Diodes Research

Solution-processed CsPbBr3 quantum-dot light-emitting diodes with a 50-fold external quantum efficiency improvement (up to 6.27%) are achieved through balancing surface passivation and carrier injection via ligand density control (treating with hexane/ethyl acetate mixed solvent), which induces the coexistence of high levels of ink stability, photoluminescence quantum yields, thin-film uniformity, and carrier-injection efficiency.