We apologize for a recent technical issue with our email system, which temporarily affected account activations. Accounts have now been activated. Authors may proceed with paper submissions. PhDFocusTM
CFP last date
20 November 2024
Call for Paper
December Edition
IJCA solicits high quality original research papers for the upcoming December edition of the journal. The last date of research paper submission is 20 November 2024

Submit your paper
Know more
The week's pick
Responsive image
Improved Shuffled Frog Leaping Algorithm with Self-Adaptive Shuffling for Fuzzy Logic PD+G Controller Optimization in Robotic Manipulators

Duc Hoang Nguyen
Random Articles
Reseach Article

A Study of Enhancement Techniques for Light Extraction Efficiency of Light Emitting Diodes

by Rahul Raj Choudhary, Pooja Bhardwaj
journal cover thumbnail

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 46 - Number 19
Year of Publication: 2012
Authors: Rahul Raj Choudhary, Pooja Bhardwaj
10.5120/7049-9646

Rahul Raj Choudhary, Pooja Bhardwaj . A Study of Enhancement Techniques for Light Extraction Efficiency of Light Emitting Diodes. International Journal of Computer Applications. 46, 19 ( May 2012), 16-19. DOI=10.5120/7049-9646

@article{ 10.5120/7049-9646,
author = { Rahul Raj Choudhary, Pooja Bhardwaj },
title = { A Study of Enhancement Techniques for Light Extraction Efficiency of Light Emitting Diodes },
journal = { International Journal of Computer Applications },
issue_date = { May 2012 },
volume = { 46 },
number = { 19 },
month = { May },
year = { 2012 },
issn = { 0975-8887 },
pages = { 16-19 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume46/number19/7049-9646/ },
doi = { 10.5120/7049-9646 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:40:10.013119+05:30
%A Rahul Raj Choudhary
%A Pooja Bhardwaj
%T A Study of Enhancement Techniques for Light Extraction Efficiency of Light Emitting Diodes
%J International Journal of Computer Applications
%@ 0975-8887
%V 46
%N 19
%P 16-19
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Light extraction efficiency has become first order design constraint for LEDs and its enhancement has always been a challenge for researchers. This affects the life of LEDs as well as optical output and various techniques for its enhancement have been reported. Methods for maximizing the efficiency of LEDs are typically based on enhancement of internal and external quantum efficiency. In our paper, we report efficiency enhancement based comparative study of LEDs which are grown by different techniques. Firstly the techniques dealing with improvement of internal quantum efficiency and secondly the techniques for increasing ratio of photons leaving the LED to those created in active region (enhancement of external quantum efficiency) are reviewed.

References
  1. H. Zhong, A. Tyagi, N. Pfaff ,Malota Saito, Kenji Fujito, James S. Speck, Steven P. Den Baars and Shuji Nakamura: "High Brightness Violet InGaN/GaN Light Emitting Diodes on Semipolar (1011) Bulk GaN Substrates" Japnese Journal of Applied Physics 48 (2009) 030201
  2. D. B. Thomson, J. J. Richard, S. D. Denbaars, F. F. Lange: Applied Physics Express 2 (2009) 042101
  3. T. Nishida, H. Saito, and N. Kobayashi Applied Physics Letter 79(2001)711
  4. Satoshi Kobayashi Yuki Tani and Hiroshi Kawazone: Japnese Journal of Applied Physics vol. 46 No. 40 2007 pp L966-L969
  5. E. Schubert: Light Emitting Diode (Cambridge University Press, Cambridge, UK, 2006), 2nd edition, pp 93.
  6. T. K. Kim, S. H. Kim, S. S. Yang,J. K. Son: Japanese Journal of Applied Physics 48 (2009) 021002
  7. K. Nakahara, K. Tamura, M. Sakai, D. Nakagawa, N. Ito, M. Sonobe Applied Physics Letter 4374(2004)L180
  8. Songbek Che, Akihiko Yuki, Hiroshi Watanabe,Yoshihiro Ishitani and Akihiko Yoshikawa, "Fabrication of Asymmetric GaN/InN/InGaN Quantum-Well Light Emitting Diodes for Reducing the Quantum-Confined Stark Effect in the Blue-Green Region", Applied Physics Express 2 (2009) 021001
  9. T. Margalith, O. Buchinsky, D. A. Cohen, A. C. Abare, M. Hansen and S. P. DenBaars, Applied Physics Letter 74(1999)3930
  10. A. Yoshikawa, N. Hashimoto, N. Kikukawa, S. B. Che, and Y. Ishitani, Applied Physics Letter 86(2005)153115
  11. K. Okuno, Y. Saito, S. Boyama, N. Nakada, S. Nitta, R. G. Tohmon, Y. Ushida, and N. Shibata: Applied Physics Express 2(2009)031002
  12. J. J. Chen, Y. K. Su, C. L. Lin, S. M. Chen, W. L. Li, and C. C. Kao IEEE Photonics Technology Letter 17(2005)19
  13. D. W. Kim, H. Y. Lee, M. C. Yoo, and G. Y. Yeoma: J. Applied Physics Letter 86(2005)052108
  14. Hirokuni Asamizu, Makota Saito Kenji ,Fujito James, S. Speck ,Steven P. Denbaars and shuji Nakamura "Continuous-Wave Operation of InGaN/GaN Laser Diodes on Semipolar (1 12 2) Plane Gallium Nitrides" Applied Physics Express 2 (2009) 021002
  15. Yoshiki Saito, Koji Okuno, Shinya Boyama, Naoyuki Nakada ,Shugo Nitta ,Yasuhisa Ushida and Naoki Shibata "m-Plane GaInN Light Emitting Diodes Grown on Patterned a-Plane Sapphire Substrates" Applied Physics Express 2 (2009) 041001
Index Terms

Computer Science
Information Sciences

Keywords

Led Internal Quantum Efficiency External Quantum Efficiency.

Powered by PhDFocusTM