Efficient Perovskite-Based Red Micro Light-Emitting Diodes

被引：2

作者：

Qian, Dongmin ^{[1
,2
]}

Liu, Jinglong ^{[1
,2
]}

Cao, Yu ^{[3
,4
]}

Cai, Yuxiao ^{[1
,2
]}

Tao, Xiangru ^{[1
,2
]}

Zhu, Wei ^{[1
,2
]}

Wang, Nana ^{[1
,2
]}

Wang, Jianpu ^{[5
,6
]}

机构：

[1] Nanjing Tech Univ NanjingTech, Inst Adv Mat IAM, Key Lab Flexible Elect KLOFE, Nanjing 211816, Peoples R China

[2] Nanjing Tech Univ NanjingTech, Sch Flexible Elect Future Technol, Nanjing 211816, Peoples R China

[3] Strait Lab Flexible Elect SLoFE, Fuzhou 350117, Peoples R China

[4] Fujian Normal Univ, Strait Inst Flexible Elect SIFE Future Technol, Fuzhou 350117, Peoples R China

[5] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China

[6] Changzhou Univ, Sch Microelect & Control Engn, Changzhou 213164, Peoples R China

来源：

IEEE ELECTRON DEVICE LETTERS | 2024年 / 45卷 / 04期

关键词：

Light emitting diodes; Perovskites; Films; Absorption; Sea measurements; Annealing; Nuclear magnetic resonance; Micro light-emitting diodes; perovskite; solution process; high efficiency;

D O I：

10.1109/LED.2024.3368163

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Micro light-emitting diodes (LEDs) have unique advantages in displays, such as high resolution, high brightness, and fast response time, making them suitable for applications in augmented reality and virtual reality. However, red micro LEDs suffer from serious size-dependent efficiency droop, which limits their use in full color displays. Perovskite LEDs have been explored to obtain red micro LEDs, but reported external quantum efficiencies (EQEs) have been below 1% due to the lack of uniform and efficient perovskite films. Here we demonstrate a high-quality perovskite film that enables efficient red micro LEDs with an EQE of 8.6%, even at a small pixel diameter of 20 mu m . To achieve this, we incorporate zinc acetate into the perovskite precursor solution, which promotes the formation of the gamma-CsPb(I1-xBr (x))(3) perovskite and inhibits the growth of large grains by bonding to the surface of the perovskite grains. These findings demonstrate the great potential of perovskite-based red micro LEDs for future display technologies.

引用

页码：637 / 640

页数：4

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