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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 18, Iss. S4 — Nov. 8, 2010
  • pp: A554–A561

Enhancing the conversion efficiency of red emission by spin-coating CdSe quantum dots on the green nanorod light-emitting diode

Ya-Ju Lee, Chia-Jung Lee, and Chun-Mao Cheng  »View Author Affiliations


Optics Express, Vol. 18, Issue S4, pp. A554-A561 (2010)
http://dx.doi.org/10.1364/OE.18.00A554


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Abstract

A hybrid structure of CdSe quantum dots (QDs) (λ = 640nm) spin-coated on the indium gallium nitride (InGaN) nanorod light-emitting diode (LED, λ = 525nm) is successfully fabricated. Experimental results indicate that the randomness and the minuteness of nanorods scatter the upcoming green light into the surrounding CdSe QDs efficiently, subsequently alleviating the likelihood of the emitted photons of red emission being recaptured by the CdSe QDs (self-absorption effect), and that increases the coupling probability of emission lights and the overall conversion efficiency. Moreover, the revealed structure with high color stability provides an alternative solution for general lighting applications of next generation.

© 2010 OSA

OCIS Codes
(160.6000) Materials : Semiconductor materials
(230.0230) Optical devices : Optical devices
(230.3670) Optical devices : Light-emitting diodes

ToC Category:
Light-Emitting Diodes

History
Original Manuscript: June 28, 2010
Revised Manuscript: August 23, 2010
Manuscript Accepted: October 3, 2010
Published: October 7, 2010

Citation
Ya-Ju Lee, Chia-Jung Lee, and Chun-Mao Cheng, "Enhancing the conversion efficiency of red emission by spin-coating CdSe quantum dots on the green nanorod light-emitting diode," Opt. Express 18, A554-A561 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-S4-A554


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