OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 4 — May. 4, 2011

Trap-state-assisted white light emission from a CdSe nanocrystal integrated hybrid light-emitting diode

S. Chandramohan, Beo Deul Ryu, Hyun Kyu Kim, Chang-Hee Hong, and Eun-Kyung Suh  »View Author Affiliations

Optics Letters, Vol. 36, Issue 6, pp. 802-804 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (454 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



This Letter reports on the fabrication of hybrid white-light-emitting diodes made of semiconductor nanocrystals (NCs) integrated on InGaN/GaN LEDs. Using core type and core/shell type CdSe NCs, the white light properties are systematically engineered for white light generation with high color rendering index (CRI). Unlike CdSe/ZnS core/shell NCs, which exhibited a unique narrowband edge emission, core type CdSe NCs offered extended broad emission toward orange/red wavelengths associated with deep trap states. Consequently, the light-emitting properties of the devices showed strong dependence on the type of NCs used, and devices with CdSe NCs offered admirable characteristics, such as Commission Internationale d’Eclairage coordinates of (0.356, 0.330) and a CRI as high as 87.4.

© 2011 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence
(160.4236) Materials : Nanomaterials
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optical Devices

Original Manuscript: January 10, 2011
Manuscript Accepted: January 21, 2011
Published: March 7, 2011

Virtual Issues
Vol. 6, Iss. 4 Virtual Journal for Biomedical Optics

S. Chandramohan, Beo Deul Ryu, Hyun Kyu Kim, Chang-Hee Hong, and Eun-Kyung Suh, "Trap-state-assisted white light emission from a CdSe nanocrystal integrated hybrid light-emitting diode," Opt. Lett. 36, 802-804 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. E. Jang, S. Jun, H. Jang, J. Lim, B. Kim, and Y. Kim, Adv. Mater. 22, 3076 (2010). [CrossRef] [PubMed]
  2. S. Nizamoglu, T. Erdem, X. W. Sun, and H. V. Demir, Opt. Lett. 35, 3372 (2010). [CrossRef] [PubMed]
  3. M. A. Schreuder, K. Xiao, I. N. Ivanov, S. M. Weiss, and S. J. Rosenthal, Nano Lett. 10, 573 (2010). [CrossRef] [PubMed]
  4. M. Achermann, M. A. Petruska, S. Kos, D. L. Smith, D. D. Koleske, and V. I. Klimov, Nature 429, 642 (2004). [CrossRef] [PubMed]
  5. S. Sapra, S. Mayilo, T. A. Klar, A. L. Rogach, and J. Feldmann, Adv. Mater. 19, 569 (2007). [CrossRef]
  6. L. Qian, D. Bera, and P. H. Holloway, Nanotechnology 19, 285702 (2008). [CrossRef] [PubMed]
  7. H.-S. Chen, C.-K. Hsu, and H.-Y. Hong, IEEE Photon. Technol. Lett. 18, 193 (2006). [CrossRef]
  8. H. V. Demir, S. Nizamoglu, E. Mutlugun, T. Ozel, S. Sapra, N. Gaponik, and A. Eychmuller, Nanotechnology 19, 335203 (2008). [CrossRef] [PubMed]
  9. S. Nizamoglu, T. Ozel, E. Sari, and H. V. Demir, Nanotechnology 18, 065709 (2007). [CrossRef]
  10. S. Nizamoglu, G. Zengin, and H. V. Demir, Appl. Phys. Lett. 92, 031102 (2008). [CrossRef]
  11. M. J. Bowers, J. R. McBride, and S. J. Rosenthal, J. Am. Chem. Soc. 127, 15378 (2005). [CrossRef] [PubMed]
  12. J. D. Gosnell, S. J. Rosenthal, and S. M. Weiss, IEEE Photon. Technol. Lett. 22, 541 (2010). [CrossRef]
  13. S. Nizamoglu, E. Mutlugun, O. Akyuz, N. K. Perkgoz, H. V. Demir, and L. Liebscher, S. Sapra, N. Gaponik, and A. Eychmu¨ller, New J. Phys. 10, 023026 (2008). [CrossRef]
  14. D. F. Underwood, T. C. Kippeny, and S. J. Rosenthal, J. Phys. Chem. B 105, 436 (2001). [CrossRef]
  15. D. R. Baker and P. V. Kamat, Langmuir 26, 11272 (2010). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited