Effect of step-graded superlattice electron blocking layer on performance of AlGaN based deep-UV light emitting diodes

RK Mondal, V Chatterjee, S Pal - Physica E: Low-dimensional Systems and …, 2019 - Elsevier
We have presented improvement in the internal quantum efficiency (IQE) for deep-ultraviolet
(DUV) AlGaN-based multi-quantum well (MQW) light-emitting diodes (LEDs) by …

III-nitride short period superlattices for deep UV light emitters

SA Nikishin - Applied Sciences, 2018 - mdpi.com
Featured Application Advanced infrared, visible, and ultraviolet light emitters. Abstract III-
Nitride short period superlattices (SPSLs), whose period does not exceed~ 2 nm (~ 8 …

High efficiency electron-blocking-layer-free deep ultraviolet LEDs with graded Al-content AlGaN insertion layer

L Shi, P Du, G Tao, Z Liu, W Luo, S Liu… - Superlattices and …, 2021 - Elsevier
AlGaN-based deep ultraviolet light-emitting diodes (DUV-LEDs) generally employ an
electron blocking layer (EBL) to suppress electron leakage. However, the EBL can also …

AlInGaN-based superlattice p-region for improvement of performance of deep UV LEDs

RK Mondal, V Chatterjee, S Pal - Optical Materials, 2020 - Elsevier
A deep ultraviolet light-emitting diode (DUV LED) consisting of a specifically designed
intermediate p-type region involving a superlattice quaternary nitride alloy has been …

Performance enhancement of UV quantum well light emitting diode through structure optimization

S Ahmad, MA Raushan, H Gupta, S Kattayat… - Optical and Quantum …, 2019 - Springer
In this paper, an extensive study is carried out via theoretical simulation to determine the
electrical and optical characteristics of AlGaN based multi-quantum well near-ultra violet …

High-performance AlGaN-based deep ultraviolet light-emitting diodes with different types of InAlGaN/AlGaN electron blocking layer

P Du, L Shi, S Liu, S Zhou - Japanese Journal of Applied Physics, 2021 - iopscience.iop.org
The efficiency performance of AlGaN-based deep ultraviolet light-emitting diodes (DUV
LEDs) is restricted by the poor hole injection and severe electron leakage. Here, we propose …

Polarization-doped quantum wells with graded Al-composition for highly efficient deep ultraviolet light-emitting diodes

P Du, L Shi, S Liu, S Zhou - Micro and Nanostructures, 2022 - Elsevier
The efficiency performance of AlGaN-based deep ultraviolet light-emitting diodes (DUV
LEDs) suffers from the strong polarization effect in multiple quantum wells (MQWs). Here, we …

Suppression of efficiency droop in AlGaN based deep UV LEDs using double side graded electron blocking layer

RK Mondal, V Chatterjee, S Prasad… - … Science and Technology, 2020 - iopscience.iop.org
We have envisaged and designed a novel III-V nitride based deep ultraviolet light emitting
diode (LED) with reasonably high efficiency at higher current density using a double-side …

Rational superlattice electron blocking layer design for boosting the quantum efficiency of 371 nm ultraviolet light-emitting diodes

P Du, X Zhao, Y Qian, P Liu, B Tang… - … on Electron Devices, 2021 - ieeexplore.ieee.org
Although great progress has been made in InGaN/AlGaN ultraviolet light-emitting diodes
(UV LEDs), their quantum efficiency is still suffering from severe electron leakage and poor …

Optimization of AlGaN-based deep UV LED performance by p-AlInGaN/AlInGaN graded superlattice electron blocking layer

Y Xu, M Yin, X Sang, F Wang, JJ Liou, Y Liu - Applied Optics, 2023 - opg.optica.org
In this paper, we significantly improved the internal quantum efficiency and output power of
AlGaN-based deep UV (DUV) LEDs by replacing the conventional p-AlGaN electron …