High‐Performance Color‐Tunable Perovskite Light Emitting Devices through Structural Modulation from Bulk to Layered Film

Adding 2‐phenoxyethylamine (POEA) into a CH3NH3PbBr3 precursor solution can modulate the organic–inorganic hybrid perovskite structure from bulk to layered, with a photoluminescence and electroluminescence shift from green to blue. Meanwhile, POEA can passivate the CH3NH3PbBr3 surface and help to ob...

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Veröffentlicht in:	Advanced materials (Weinheim) 2017-02, Vol.29 (8), p.np-n/a
Hauptverfasser:	Chen, Ziming, Zhang, Chongyang, Jiang, Xiao‐Fang, Liu, Meiyue, Xia, Ruoxi, Shi, Tingting, Chen, Dongcheng, Xue, Qifan, Zhao, Yu‐Jun, Su, Shijian, Yip, Hin‐Lap, Cao, Yong
Format:	Artikel
Sprache:	eng
Schlagworte:	blue emitting devices Color color tunable Devices Electroluminescence layered structures Light emitting Materials science Modulation organic–inorganic hybrid perovskite LEDs Perovskite structure Perovskites Photoluminescence Precursors Quantum efficiency structure modulation
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Beschreibung
Zusammenfassung:	Adding 2‐phenoxyethylamine (POEA) into a CH3NH3PbBr3 precursor solution can modulate the organic–inorganic hybrid perovskite structure from bulk to layered, with a photoluminescence and electroluminescence shift from green to blue. Meanwhile, POEA can passivate the CH3NH3PbBr3 surface and help to obtain a pure CH3NH3PbBr3 phase, leading to an improvement of the external quantum efficiency to nearly 3% in CH3NH3PbBr3 LED.
ISSN:	0935-9648 1521-4095
DOI:	10.1002/adma.201603157