Monolithic Multi-Color Tunable Inorganic Light-Emitting Diodes,Advanced Electronic Materials

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Monolithic Multi-Color Tunable Inorganic Light-Emitting Diodes
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2021-08-14 , DOI: 10.1002/aelm.202100598
Seung‐Hye Baek ₁ , Hee‐Wung Kim ₁ , Gun‐Woo Lee ₁ , Sung‐Nam Lee ₁

Affiliation

Inorganic light-emitting diodes (LEDs) possess exceptional advantages for achieving wide wavelength emission ranges. However, certain material limitations should be overcome to alleviate the green gap between InGaN and AlInGaP-based LEDs. In this study, monolithic red, green, and bluish-green emissions are achieved by exploiting the blueshift phenomenon, caused by the band-filling and piezoelectric screening effects. Different-sized LEDs are designed to control the injection current density on the same wafer. The smaller the size of the LED, the shorter the emission wavelength, resulting in multi-color emission (from red to bluish-green). As a result, red, green, and white emissions are individually and simultaneously obtained using dichromatic LED systems, comprising three red and one green LED cell. In addition, a wide range of visible light colors are achieved by adjusting the size of the LEDs and the applies injection current.

中文翻译：

单片多色可调无机发光二极管

无机发光二极管 (LED) 在实现宽波长发射范围方面具有非凡的优势。然而，应克服某些材料限制以缓解 InGaN 和基于 AlInGaP 的 LED 之间的绿色间隙。在这项研究中，通过利用由能带填充和压电屏蔽效应引起的蓝移现象，实现了单片红色、绿色和蓝绿色发射。不同尺寸的 LED 设计用于控制同一晶片上的注入电流密度。LED 的尺寸越小，发射波长越短，从而产生多色发射（从红色到蓝绿色）。因此，使用包括三个红色和一个绿色 LED 单元的二色 LED 系统分别并同时获得红色、绿色和白色发射。此外，

更新日期：2021-08-14

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