jap banner
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

Journal of Applied Physics / Volume 108 / Issue 7 / ARTICLES / Lasers, Optics, and Optoelectronics

J. Appl. Phys. 108, 073115 (2010); http://dx.doi.org/10.1063/1.3490895 (6 pages)

Blue-green and white color tuning of monolithic light emitting diodes

B. Damilano, P. Demolon, J. Brault, T. Huault, F. Natali, and J. Massies

Centre National de la Recherche Scientifique–Centre de Recherche sur l’Hétéro-Epitaxie et ses Applications, Rue B. Gregory, 06560 Valbonne, France

View MapView Map

(Received 3 June 2010; accepted 20 August 2010; published online 8 October 2010)

A blue light emitting diode (LED) is grown on top of a (Ga, In)N/GaN multiple quantum well (QW) acting as a light converter from blue to green-yellow wavelength. The blue light is produced by electrical injection, while the green-yellow emitting QWs are optically pumped by the blue photons. It is shown that the final color of the LED is strongly dependent on the blue pumping wavelength, the absorption and the internal quantum efficiency of the light converter. Depending on these parameters, blue to green LEDs or even white LEDs can be obtained. In addition, the injection current dependence of the LED electroluminescence is measured and analyzed. A very low blueshift is observed as a function of the injection current. It is explained by the fact that the carrier density per QW in the light converter stays relatively low compared to the case of classical current-injected green LEDs.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
  3. ELECTROLUMINESCENCE CHARACTERISTICS
    1. Fixed pump wavelength and variable light converter wavelength
    2. Variable pump wavelength and fixed light converter wavelength
    3. White light emission
  4. VARIATION IN THE LED COLOR WITH ELECTRICAL INJECTION
    1. Electroluminescence as a function of current
    2. Comparison of standard current-injected green LEDs with optically pumped green light emitting devices
  5. CONCLUSION

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

electroluminescence, light emitting diodes, semiconductor quantum wells, spectral line shift

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3490895

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.

    References

    X. Guo, G. D. Shen, B. L. Guan, X. L. Gu, D. Wu, and Y. B. Li, Appl. Phys. Lett. 92, 013507 (2008)APPLAB000092000001013507000001.

    H. S. Jang, B. -H. Kwon, H. Yang, and D. Y. Jeon, Appl. Phys. Lett. 95, 161901 (2009)APPLAB000095000016161901000001.

    C. F. Huang, C. -F. Lu, T. -Y. Yang, J. -J. Huang, and C. C. Yang, Appl. Phys. Lett. 90, 151122 (2007)APPLAB000090000015151122000001.

    S. -N. Lee, H. S. Paek, H. Kim, T. Jang, and Y. Park, Appl. Phys. Lett. 92, 081107 (2008)APPLAB000092000008081107000001.

    A. Avramescu, T. Lermer, J. Müller, S. Tautz, D. Queren, S. Lutgen, and U. Strauss, Appl. Phys. Lett. 95, 071103 (2009)APPLAB000095000007071103000001.

    B. Damilano, A. Dussaigne, J. Brault, T. Huault, F. Natali, P. Demolon, P. De Mierry, S. Chenot, and J. Massies, Appl. Phys. Lett. 93, 101117 (2008)APPLAB000093000010101117000001.

    A. David, M. J. Grundmann, J. F. Kaeding, N. F. Gardner, T. G. Mihopoulos, and M. R. Krames, Appl. Phys. Lett. 92, 053502 (2008)APPLAB000092000005053502000001.

    H. Sato, R. B. Chung, H. Hirasawa, N. Fellows, H. Masui, F. Wu, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, Appl. Phys. Lett. 92, 221110 (2008)APPLAB000092000022221110000001.


For access to citing articles, you need to log in.


Figures (9)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Blue-green and white color tuning of monolithic light emitting diodes
Go to AIP Home   © AIP Publishing LLC
close