Mg-Doped Pure-Bromide Perovskite

Stable deep-blue single-peak emission

Mg2+ incorporation at the B-site simultaneously induces spectral blueshift and phase homogenization, effectively suppressing halide migration inherent in mixed-halide blue perovskites to yield stable deep-blue electroluminescence.

Li, Nan · Xia, Yu · Xiao-Ying, He · Li, Jia · Wang, Kai · Chen, Jing · Chen, Chun · Huang, Lei · Yu-Tong, Yang · Chen, Xin · Yan-Hui, Lou · Wang, Zhaokui

Advanced Materials 2025

Specifications

EQE
{'zh': '4.76', 'en': '4.76'} %

Advantages

No spectral shift

The pure-bromide system without halogen mixing eliminates ion migration at the root, ensuring stable emission wavelength.

Unimodal deep-blue emission

B-site Mg doping facilitates energy transfer from small-n to large-n phases, homogenizing the phase and yielding unimodal emission.

First bimodal emission mechanism

First systematic investigation and mechanistic elucidation of the origin of bimodal emission in blue PeLEDs, guiding future design to avoid it.

Applications