TY - JOUR
T1 - Review - White Light-Emitting Diodes
T2 - Past, Present, and Future
AU - Islam, Noor Ul
AU - Usman, Muhammad
AU - Rasheed, Saad
AU - Jamil, Tariq
N1 - Publisher Copyright:
© 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PY - 2021/10
Y1 - 2021/10
N2 - With the advancement in technology of efficient and high-quality lighting, white light-emitting diodes (WLEDs) are gradually gaining ground with their ever-increasing high efficiency, energy density excitation, high device stability, and high output power. In this review, various technological approaches that are used to produce white light are presented. The progress made in improving the efficiency of white LEDs, using different phosphors along with a blue LED chip, is discussed. Phosphor-based approach is better and efficient in comparison to other approaches to generate white light. Using different phosphors, the improvement in luminous efficacy of white LEDs is reviewed. This review may serve as a roadmap for easily-fabricated, low-cost, and a longer lifespan white light-emitting diodes for indoor and outdoor applications.
AB - With the advancement in technology of efficient and high-quality lighting, white light-emitting diodes (WLEDs) are gradually gaining ground with their ever-increasing high efficiency, energy density excitation, high device stability, and high output power. In this review, various technological approaches that are used to produce white light are presented. The progress made in improving the efficiency of white LEDs, using different phosphors along with a blue LED chip, is discussed. Phosphor-based approach is better and efficient in comparison to other approaches to generate white light. Using different phosphors, the improvement in luminous efficacy of white LEDs is reviewed. This review may serve as a roadmap for easily-fabricated, low-cost, and a longer lifespan white light-emitting diodes for indoor and outdoor applications.
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U2 - 10.1149/2162-8777/ac26d8
DO - 10.1149/2162-8777/ac26d8
M3 - Article
AN - SCOPUS:85117162446
SN - 2162-8769
VL - 10
JO - ECS Journal of Solid State Science and Technology
JF - ECS Journal of Solid State Science and Technology
IS - 10
M1 - 106004
ER -