Efficient emission of InGaN-based light-emitting diodes: toward orange and red

S Zhang, J Zhang, J Gao, X Wang, C Zheng… - Photonics …, 2020 - opg.optica.org
Indium gallium nitride (InGaN)-based light-emitting diodes (LEDs) are considered a
promising candidate for red-green-blue (RGB) micro displays. Currently, the blue and green …

InGaN-based red light-emitting diodes: from traditional to micro-LEDs

Z Zhuang, D Iida, K Ohkawa - Japanese Journal of Applied …, 2021 - iopscience.iop.org
InGaN-based LEDs are efficient light sources in the blue–green light range and have been
successfully commercialized in the last decades. Extending their spectral range to the red …

[HTML][HTML] Demonstration of 621-nm-wavelength InGaN-based single-quantum-well LEDs with an external quantum efficiency of 4.3% at 10.1 A/cm2

D Iida, P Kirilenko, M Velazquez-Rizo, Z Zhuang… - AIP Advances, 2022 - pubs.aip.org
Here, we report highly efficient InGaN-based red light-emitting diodes (LEDs) grown on
conventional c-plane-patterned sapphire substrates. An InGaN single quantum well active …

Investigation of InGaN-based red/green micro-light-emitting diodes

Z Zhuang, D Iida, K Ohkawa - Optics Letters, 2021 - opg.optica.org
We investigated the performance of InGaN-based red/green micro-light-emitting diodes
(µLEDs) ranging from 98× 98 µ m 2 to 17× 17 µ m 2. The average forward voltage at 10 A/cm …

InGaN-based green micro-LED efficiency enhancement by hydrogen passivation of the p-GaN sidewall

P Kirilenko, D Iida, Z Zhuang… - Applied Physics Express, 2022 - iopscience.iop.org
We investigated the effect of the sidewall passivation by hydrogen plasma on the InGaN
green micro-LED performance. Hydrogen passivation deactivates the surface region of p …

606-nm InGaN amber micro-light-emitting diodes with an on-wafer external quantum efficiency of 0.56%

Z Zhuang, D Iida, M Velazquez-Rizo… - IEEE Electron Device …, 2021 - ieeexplore.ieee.org
We demonstrated amber InGaN micro-light-emitting diodes (LEDs) with the peak
wavelength of 606 nm and full-width at maximum (FWHM) of 50 nm at 20 A/cm 2. The amber …

630-nm red InGaN micro-light-emitting diodes (<20 μm × 20 μm) exceeding 1 mW/mm2 for full-color micro-displays

Z Zhuang, D Iida, M Velazquez-Rizo… - Photonics Research, 2021 - opg.optica.org
We demonstrated 10× 10 arrays of InGaN 17 μm× 17 μm micro-light-emitting diodes
(μLEDs) with a peak wavelength from 662 to 630 nm at 10–50 A/cm^ 2. The on-wafer …

[HTML][HTML] Effects of size on the electrical and optical properties of InGaN-based red light-emitting diodes

Z Zhuang, D Iida, K Ohkawa - Applied Physics Letters, 2020 - pubs.aip.org
We investigated the effects of size on electrical and optical properties of InGaN-based red
light-emitting diodes (LEDs) by designing rectangular chips with different mesa lengths …

Fabrication and characterization of sputtered Mg and F co-doped ZnO thin films with different substrate temperature for silicon thin-film solar cell applications

FH Wang, MS Chen, YL Jiang, HW Liu… - Journal of Alloys and …, 2022 - Elsevier
Transparent conducting oxide thin films have been extensively studied for various
optoelectronic devices. In this paper, we investigated the influence of substrate temperature …

Optimizing Al composition in barriers for InGaN amber micro-LEDs with high wall-plug efficiency

Y Sang, Z Zhuang, K **ng, Z Jiang, C Li… - IEEE Electron …, 2023 - ieeexplore.ieee.org
This study demonstrated InGaN-based amber micro-light-emitting diodes (LEDs) with
varying Al contents of 2%, 5%, and 16% in barriers. The LEDs with Al GaN in barriers …