Green gap in GaN-based light-emitting diodes: in perspective

M Usman, M Munsif, U Mushtaq, AR Anwar… - Critical Reviews in …, 2021 - Taylor & Francis
Significant progress has been made in the advancement of light-emitting devices in both the
blue and the red parts of the emission spectrum. However, the quantum efficiency of green …

Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells

H Zhao, G Liu, J Zhang, JD Poplawsky, V Dierolf… - Optics express, 2011 - opg.optica.org
Optimization of internal quantum efficiency (IQE) for InGaN quantum wells (QWs) light-
emitting diodes (LEDs) is investigated. Staggered InGaN QWs with large electron-hole …

Recent research on indium-gallium-nitride-based light-emitting diodes: Growth conditions and external quantum efficiency

N Jafar, J Jiang, H Lu, M Qasim, H Zhang - Crystals, 2023 - mdpi.com
The optimization of the synthesis of III-V compounds is a crucial subject in enhancing the
external quantum efficiency of blue LEDs, laser diodes, quantum-dot solar cells, and other …

Improvement of peak quantum efficiency and efficiency droop in III-nitride visible light-emitting diodes with an InAlN electron-blocking layer

S Choi, HJ Kim, SS Kim, J Liu, J Kim, JH Ryou… - Applied Physics …, 2010 - pubs.aip.org
InAlN electron-blocking layers (EBLs) are shown to improve the emission intensity and to
mitigate the efficiency droop problem in III-nitride-based visible light-emitting diodes (LEDs) …

Efficiency-droop suppression by using large-bandgap AlGaInN thin barrier layers in InGaN quantum-well light-emitting diodes

G Liu, J Zhang, CK Tan, N Tansu - IEEE Photonics Journal, 2013 - ieeexplore.ieee.org
The electrical and optical characteristics of InGaN quantum-well light-emitting diodes with
large-bandgap AlGaInN thin barriers were analyzed with the consideration of carrier …

Efficiency droop due to electron spill-over and limited hole injection in III-nitride visible light-emitting diodes employing lattice-matched InAlN electron blocking layers

S Choi, MH Ji, J Kim, H ** Kim, MM Satter… - Applied Physics …, 2012 - pubs.aip.org
Data and analysis are presented for the study of efficiency droop in visible III-nitride light-
emitting diodes (LEDs) considering the effects of both electron spill-over out of active region …

Ultralow wear of gallium nitride

G Zeng, CK Tan, N Tansu, BA Krick - Applied Physics Letters, 2016 - pubs.aip.org
Here, we reveal a remarkable (and surprising) physical property of GaN: it is extremely wear
resistant. In fact, we measured the wear rate of GaN is approaching wear rates reported for …

Hole injection and electron overflow improvement in InGaN/GaN light-emitting diodes by a tapered AlGaN electron blocking layer

BC Lin, KJ Chen, CH Wang, CH Chiu, YP Lan… - Optics …, 2014 - opg.optica.org
A tapered AlGaN electron blocking layer with step-graded aluminum composition is
analyzed in nitride-based blue light-emitting diode (LED) numerically and experimentally …

Advances and prospects in nitrides based light-emitting-diodes

L **min, L Zhe, L Zhiqiang, Y Jianchang… - Journal of …, 2016 - iopscience.iop.org
Due to their low power consumption, long lifetime and high efficiency, nitrides based white
light-emitting-diodes (LEDs) have long been considered to be a promising technology for …

Origins of unintentional incorporation of gallium in InAlN layers during epitaxial growth, part II: Effects of underlying layers and growth chamber conditions

J Kim, Z Lochner, MH Ji, S Choi, HJ Kim, JS Kim… - Journal of Crystal …, 2014 - Elsevier
We systematically study the origins and mechanisms for unintentional incorporation of
gallium (Ga) during epitaxial growth of ternary InAlN thin-film layers. The origins of auto …