@article{Guo2026, 
author = {Zhiying Guo and Ruoyan Liu and Bei Zhou and Mohan Li and Zhijun Liu and Lanlan Zhai and Qian Miao and He Huang and Yun Yang and Guoku Chao and Haihong Wen and Jun Zou and Chao Zou},
title = {Amide-modulated crystallization kinetics for high-performance pure-blue perovskite LED},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {1},
pages = {94907920},
keywords = {perovskite, crystallization kinetics, pure-blue, perovskite light-emitting diode (PeLED), quasi-two-dimensional (2D)},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907920},
doi = {10.26599/NR.2025.94907920},
abstract = {Quasi-two-dimensional perovskites, with spectral tuning property, have opened up vast application prospects in the field of optoelectronic devices, especially in blue perovskite light-emitting diode (PeLED). However, relatively high density of defect states usually results in nonradiative recombination loss due to unexpected carriers capture at prolonged transport, which limits high-performance PeLED. Here, we propose a method for preparing pure-blue PeLED using bifunctional amide molecules to modulate crystallization kinetics. This strategy inhibits the formation of the n = 1 phase and simultaneously passivates defects with the bifunctional groups, thereby reducing the occurrence of nonradiative recombination. The external quantum efficiency of the pure-blue PeLED fabricated using this strategy is significantly enhanced, reaching 9.7% at 478 nm, which is about 7 times higher than that of the control device. This work provides a novel strategy on the selection of bifunctional passivators for perovskites.}
}