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Updated: May 2, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Spacer cation enabled dimension control for efficient and wavelength-tunable blue perovskite light-emitting diodes
Qingxiang Liu1,2, Xinan Wu3,4, Aidan H Coffey5
1Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. kangwang@iccas.ac.cn.
Abstract:
This study explores a conjugated spacer molecule, biphenylethylammonium bromide (bPEA), to enable efficient dimension control in quasi-two-dimensional perovskites for blue light-emitting diodes. The incorporation of bPEA improves the optoelectronic properties, thereby delivering a peak external quantum efficiency of 7.0% at 483 nm and tunable emission from 493 to 466 nm.
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