Distinct green electroluminescence from lead-free CsCuBr2 halide micro-crosses†
Tao
Li, 
a
Xiaoming
Mo,
*ab
Chengyu
Peng,
a
Qiuchun
Lu,
a
Chengjun
Qi,
a
Xiaoma
Tao,
a
Yifang
Ouyang
a
and
Yulu
Zhou
*a
a
Xiaoming
Mo,
*ab
Chengyu
Peng,
a
Qiuchun
Lu,
a
Chengjun
Qi,
a
Xiaoma
Tao,
a
Yifang
Ouyang
a
and
Yulu
Zhou
*a
Abstract
Low-dimensional, lead-free, and cuprous-based halide compounds of Cs3Cu2Br5 micro-rods and CsCuBr2 micro-crosses (MCs) were synthesized via a simple solution method. The CsCuBr2 MCs were quite stable in air. Distinct green electroluminescence at 527 nm originating from CsCuBr2 MCs was observed at a low driving voltage of less than 3 V.
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