Top-Emitting Microcavity Light-Emitting Diodes Based on All-Thermally Evaporated Lead-Free Copper Halide Self-Trapped-Exciton Emitters

被引：12

作者：

Sun, Fangling ^{[1
]}

Liu, Tianyu ^{[1
]}

Ran, Peng ^{[1
]}

Chen, Xu ^{[1
]}

Jiang, Tingming ^{[1
]}

Shen, Weidong ^{[1
]}

Liu, Xu ^{[1
]}

Yang, Yang Michael ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Inst Adv Photon, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Jiaxing Inst, Intelligent Opt & Photon Res Ctr, Jiaxing 314041, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2022年 / 13卷 / 15期

关键词：

HIGH-EFFICIENCY; PEROVSKITE; DEVICES; BRIGHT;

D O I：

10.1021/acs.jpclett.2c00740

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lead-free metal halide light-emitting diodes (LEDs) based on cesium copperhalide (CsCu2I3) self-trapped-exciton (STE) emissions show great potential in lighting andcolor display applications, especially because of their nontoxicity and earth abundance.However, so far, the efficiency and color purity of CsCu2I3-based LEDs remain low. Here wedemonstrate the emission of a CsCu2I3emitter can be enhanced and narrowed in a top-emitting microcavity device. Consequently, the CsCu2I3-based LED device with the assistanceof a top-emitting microcavity has significantly narrowed and enhanced the emission spectrumwith a full width at half-maximum of 59 nm and a maximum forward brightness of 14767 cdm-2. To the best of our knowledge, this work achieves the narrowest CsCu2I3LED spectra anddemonstrates the potential of employing the microcavity effect to increase the efficiency andcolor purity of STE-based light-emitting devices.

引用

页码：3431 / 3437

页数：7

共 46 条

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