2018-11-16 Welcome guest,  Sign In  |  Sign Up
Chin. Opt. Lett.
 Home  List of Issues    Issue 10 , Vol. 06 , 2008    Optimization of top polymer gratings to improve GaN LEDs light transmission


Optimization of top polymer gratings to improve GaN LEDs light transmission
Xiaomin Jin1;2, Bei Zhang2, Tao Dai2, Wei Wei2, Xiangning Kang2, Guoyi Zhang2, Simeon Trieu1, Fei Wang3
1 Electrical Engineering Department, [California Polytechnic State University], San Luis Obispo, CA 93407, USA
2 School of Physics and State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, [Peking University], Beijing 100871
3 Electrical Engineering Department, [California State University at Long Beach], Long Beach, CA 90840, USA

Chin. Opt. Lett., 2008, 06(10): pp.788-790-3

DOI:
Topic:Lasers and laser optics
Keywords(OCIS Code): 140.0140  140.5960  050.1950  

Abstract
We present a grating model of two-dimensional (2D) rigorous coupled wave analysis (RCWA) to study top diffraction gratings on light-emitting diodes (LEDs). We compare the integrated-transmission of the non-grating, rectangular-grating, and triangular-grating cases for the same grating period of 6 \mum, and show that the triangular grating has the best performance. For the triangular grating with 6-\mm period, the LED achieves the highest light transmission at 6-m grating bottom width and 2.9-\mum grating depth. Compared with the non-grating case, the optimized light transmission improvement is about 74.6%. The simulation agrees with the experimental data of the thin polymer grating encapsulated flip-chip (FC) GaN-based LEDs for the light extraction improvement.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 View PDF (388 KB)

Share:


Received:2008/7/16
Accepted:1949/10/1
Posted online:1949/10/1

Get Citation: Xiaomin Jin, Bei Zhang, Tao Dai, Wei Wei, Xiangning Kang, Guoyi Zhang, Simeon Trieu, Fei Wang, "Optimization of top polymer gratings to improve GaN LEDs light transmission," Chin. Opt. Lett. 06(10), 788-790-3(2008)

Note: This work was supported by the Department of the Navy, Office of Naval Research, under Award # N00014-07-1-1152, USA, the "Chunhui" Exchange Research Fellow 2008, Ministry of Education of China, the National “973" Program of China (No.2007CB307004), the National "863" Program of China (No.2006AA03A113), and the National Natural Science Foundation of China (No.60276032, 60577030, and 60607003). X. Jin's e-mail address is xjin@calpoly.edu.



References

1. S.-H. Huang, R.-H. Horng, K.-S. Wen, Y.-F. Lin, K.-W. Yen, and D.-S. Wuu, IEEE Photon. Technol. Lett. 18, 2623 (2006).

2. M.-K. Lee, C.-L. Ho, and P.-C. Chen, IEEE Photon. Technol. Lett. 20, 252 (2008).

3. T. V. Cuong, H. S. Cheong, and C.-H. Hong, Phys. Stat. Sol. (c) 1, 2433 (2004).

4. S. H. Kim, K.-D. Lee, J.-Y. Kim, M.-K. Kwon, and S.-J. Park, Nanotechnology 18, 055306 (2007).

5. S.-M. Pan, R.-C. Tu, Y.-M. Fan, R.-C. Yeh, and J.-T. Hsu, IEEE Photon. Technol. Lett. 15, 646 (2003).

6. S.-M. Pan, R.-C. Tu, Y.-M. Fan, R.-C. Yeh, and J.-T. Hsu, IEEE Photon. Technol. Lett. 15, 649 (2003).

7. S. M. Huang, Y. Yao, C. Jin, Z. Sun, and Z. J. Dong, Displays 29, 254 (2008).

8. H.-G. Hong, S.-S. Kim, D.-Y. Kim, T. Lee, J.-O. Song, J. H. Cho, C. Sone, Y. Park, and T.-Y. Seong, Appl. Phys. Lett. 88, 103505 (2006).

9. K. Bao, X.-N. Kang, B. Zhang, T. Dai, C. Xiong, H. Ji, G.-Y. Zhang, and Y. Chen, IEEE Photon. Technol. Lett. 19, 1840 (2007).

10. M. G. Moharam and T. K. Gaylord, J. Opt. Soc. Am. A 3, 1780 (1986).

11. L. Li, J. Opt. Soc. Am. A 14, 2758 (1997).


Save this article's abstract as
Copyright©2018 Chinese Optics Letters 沪ICP备15018463号-7 公安备案沪公网安备 31011402005522号