High‐Performance Color‐Tunable Perovskite Light Emitting Devices through Structural Modulation from Bulk to Layered Film. Issue 8 (21st December 2016)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Advanced materials. Volume 29:Issue 8(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-12-21
• Subjects: blue emitting devices -- color tunable -- layered structures -- organic–inorganic hybrid perovskite LEDs -- structure modulation; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201603157
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : Adding 2‐phenoxyethylamine (POEA) into a CH3 NH3 PbBr3 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 CH3 NH3 PbBr3 surface and help to obtain a pure CH3 NH3 PbBr3 phase, leading to an improvement of the external quantum efficiency to nearly 3% in CH3 NH3 PbBr3 LED.