Machine learning and digital twin driven diagnostics and prognostics of light‐emitting diodes

MS Ibrahim, J Fan, WKC Yung… - Laser & Photonics …, 2020 - Wiley Online Library
Light‐emitting diodes (LEDs) are among the key innovations that have revolutionized the
lighting industry, due to their versatility in applications, higher reliability, longer lifetime, and …

A review of prognostic techniques for high-power white LEDs

B Sun, X Jiang, KC Yung, J Fan… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
High-power white light-emitting diodes (LEDs) have attracted much attention due to their
versatility in a variety of applications and growing demand in markets such as general …

Challenges and strategies to design phosphors for future white light emitting diodes

K Panigrahi, A Nag - The Journal of Physical Chemistry C, 2022 - ACS Publications
Phosphor-converted white-light-emitting diodes (pc-WLEDs) are a commercially successful
product for energy-efficient illumination. A large number of reported phosphors exhibit high …

Degradation physics of high power LEDs in outdoor environment and the role of phosphor in the degradation process

P Singh, CM Tan - Scientific reports, 2016 - nature.com
A moisture-electrical–temperature (MET) test is proposed to evaluate the outdoor reliability
of high power blue LEDs, with and without phosphor, and to understand the degradation …

System level reliability assessment for high power light-emitting diode lamp based on a Bayesian network method

MS Ibrahim, J Fan, WKC Yung, Z Jing, X Fan… - Measurement, 2021 - Elsevier
The increased system complexity in electronic products brings challenges in a system level
reliability assessment and lifetime estimation. Traditionally, the graph model-based reliability …

A new technique to equalize branch currents in multiarray LED lamps based on variable inductors

RA Pinto, JM Alonso, MS Perdigão… - IEEE Transactions …, 2015 - ieeexplore.ieee.org
In this paper, a new technique to equalize light-emitting diode (LED) currents in multiarray
LED lamps is proposed. The current through the LEDs is controlled by changing the …

A review of blue light emitting diodes for future solid state lighting and visible light communication applications

M Manikandan, D Nirmal, J Ajayan… - Superlattices and …, 2019 - Elsevier
This paper reviews the rapid progress being made in the developments of organic/inorganic
blue light emitting diodes (LEDs). Blue LEDs exhibits outstanding electrical and optical …

Bayesian based lifetime prediction for high-power white LEDs

MS Ibrahim, Z Jing, WKC Yung, J Fan - Expert Systems with Applications, 2021 - Elsevier
The introduction of high-power white LEDs has revolutionized the lighting industry in the
past few decades due to the multiple benefits in terms of high reliability, environmental …

Aging characteristics of blue InGaN micro-light emitting diodes at an extremely high current density of 3.5 kA cm− 2

P Tian, A Althumali, E Gu, IM Watson… - Semiconductor …, 2016 - iopscience.iop.org
The aging characteristics of blue InGaN micro-light emitting diodes (micro-LEDs) with
different sizes have been studied at an extremely high current density 3.5 kA cm− 2 for …

Long-term degradation mechanisms of mid-power LEDs for lighting applications

M Buffolo, C De Santi, M Meneghini, D Rigon… - Microelectronics …, 2015 - Elsevier
This paper reports the results of a reliability investigation performed on four different groups
of commercially available mid-power white LEDs. In order to determine the robustness of …