Large cation ethylammonium incorporated perovskite for efficient and spectra stable blue light-emitting diodes

• Published in: Nature communications Vol. 11; no. 1; pp. 4165 - 8
• Main Authors: Chu, Zema, Zhao, Yang, Ma, Fei, Zhang, Cai-Xin, Deng, Huixiong, Gao, Feng, Ye, Qiufeng, Meng, Junhua, Yin, Zhigang, Zhang, Xingwang, You, Jingbi
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 20.08.2020; Nature Publishing Group; Nature Portfolio
• Subjects: 140/131; 140/146; 639/301/1005/1007; 639/301/1019/1020/1091; Cations; Efficiency; Electroluminescence; Emission spectra; Emissions; Humanities and Social Sciences; Light emitting diodes; Luminescence; multidisciplinary; NMR; Nuclear magnetic resonance; Perovskites; Photoluminescence; Photons; Quantum efficiency; Science; Science (multidisciplinary); Spectral emittance; Thermal stress; X-ray diffraction

Perovskite light-emitting diodes (PeLEDs) have showed significant progress in recent years; the external quantum efficiency (EQE) of electroluminescence in green and red regions has exceeded 20%, but the efficiency in blue lags far behind. Here, a large cation CH 3 CH 2 NH 2 + is added in PEA 2 (CsP...