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Chin. Opt. Lett.
 Home  List of Issues    Issue 11 , Vol. 14 , 2016    10.3788/COL201614.112301


Multi-color-emitting quantum dot-based white LEDs
Xiaoqin Gao1, Jian Dang1, Liang Wu1, Bin Sheng1, Jiayu Zhang2, and Zaichen Zhang1
1 National Mobile Communications Research Laboratory, [Southeast University], Nanjing 21 0096, China
2 School of Electronic Science and Engineering, Advanced Photonics Center, [Southeast University], Nanjing 2 10096, China

Chin. Opt. Lett., 2016, 14(11): pp.112301

DOI:10.3788/COL201614.112301
Topic:Optical devices
Keywords(OCIS Code): 230.5590  250.5230  

Abstract
Research on white light-emitting diodes (LEDs) based on multi-color-emitting quantum dots (QDs) is carried out in this Letter. The equations of luminous efficiency (LE), color rendering index (CRI), chromaticity coordinates (x,y), and color temperature (Tc) of white LEDs are obtained, according to the spectral-LE function Φ of LED chips and QDs. The calculated results indicate that the values of the performance parameters of QD-based white LEDs are closely related and proportional to the QDs’ fluorescence spectra, and white LEDs with a high LE and a high CRI may be fabricated based on QDs. We have provided theoretical guidance for preparing such white LEDs.

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.

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Received:2016/8/4
Accepted:2016/9/23
Posted online:2016/10/27

Get Citation: Xiaoqin Gao, Jian Dang, Liang Wu, Bin Sheng, Jiayu Zhang, and Zaichen Zhang, "Multi-color-emitting quantum dot-based white LEDs," Chin. Opt. Lett. 14(11), 112301(2016)

Note: This work was supported by the National Natural Science Foundation of China under Grant Nos. 61571105 and 61223001. The authors want to thank Prof. T.-C. Poon of Virginia Tech for editing some parts of the paper.



References

1. M. Krames, O. Shchekin, R. Mueller-Mach, G. Mueller, L. Zhou, G. Harbers, and M. Craford, J. Disp. Technol. 3, 160 (2007).

2. M. Crawford, IEEE J. Sel. Top. Quantum. Electron. 15, 1028 (2009).

3. X. Liu, A. Yang, Y. Wang, and L. Feng, Chin. Opt. Lett. 13, 120601 (2015).

4. H. Li, Y. Zhang, X. Chen, C. Wu, J. Guo, Z. Gao, and H. Chen, Chin. Opt. Lett. 13, 080605 (2015).

5. H. Jang, W. Im, D. Lee, D. Jeon, and S. Kim, J. Lumin. 126, 371 (2007).

6. S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, Mater. Sci. Eng. 71, 1 (2010).

7. H. Chen, C. Hsu, and H. Hong, IEEE Photon. Technol. 18, 193 (2006).

8. C. Shen, J. Chu, F. Qian, X. Zou, C. Zhong, K. Li, and S. Jin, J. Mod. Opt. 59, 1199 (2012).

9. X. Gao, N. Zhuo, H. Wang, Y. Cui, and J. Zhang, Acta Phys. Sin. 64, 1 (2015).

10. P. Zhong, G. He, and M. Zhang, Opt. Express 20, 9122 (2012).

11. I. Moreno, Proc. SPIE 6342, 34216 (2006).

12. CIE 13.2-1974, Method of Measuring and Specifying Color Rendering Properties of Light Sources, 2nd ed. (Academic, 1974).

13. D. MacLeod, and R. M. Boynton, J. Opt. Soc. Am. 69, 1183 (1979).

14. W. Chung, H. J. Yu, S. H. Park, B. H. Chun, and S. H. Kim, Mater. Chem. Phys. 126, 162 (2011).

15. C. C. Yang, C. M. Lin, Y. J. Chen, Y. T. Wu, S. R. Chuang, R. S. Liu, and S. F. Hu, Appl. Phys. Lett. 90, 123503 (2007).

16. Z. Y. Luo, Y. Chen, and S. T. Wu, Opt. Express 21, 26269 (2013).

17. R. D. Zhu, Z. Y. Luo, H. W. Chen, Y. J. Dong, and S. T. Wu, Opt. Express 23, 23680 (2015).


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