OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1208–1211

Quantum-dot-based white lighting planar source through downconversion by blue electroluminescence

Ki-Heon Lee, Jong-Hoon Kim, Ho Seong Jang, Young Rag Do, and Heesun Yang  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1208-1211 (2014)
http://dx.doi.org/10.1364/OL.39.001208


View Full Text Article

Enhanced HTML    Acrobat PDF (455 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We report the unprecedented fabrication of a planar white lighting quantum dot light-emitting diode (QD-LED) through integrating a CdZnS QD-based blue electroluminescence (EL) device with a free-standing polymethyl methacrylate (PMMA) composite film embedded with orange-emitting Cu–In–S (CIS) green-greenish yellow-emitting Cu–In–Ga–S (CIGS) QDs. The hybrid device successfully generates bicolored white emission that comprises blue EL and downconverted QD photoluminescence. The hybrid QD-LEDs loaded with the composite film embedded with one type of QDs exhibit a limited white spectral coverage, consequently producing low values (<65) in color rendering index (CRI). Thus, the QD-PMMA film consisting of a blend of green CIGS and orange CIS QD downconverters is applied for obtaining a higher-CRI white light through the spectral extension, resulting in a much improved CRI of 75–77. Various EL performances of the hybrid planar white device versus the reference blue QD-LED are also characterized in details.

© 2014 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence
(160.4236) Materials : Nanomaterials

ToC Category:
Optoelectronics

History
Original Manuscript: November 26, 2013
Manuscript Accepted: January 19, 2014
Published: February 21, 2014

Citation
Ki-Heon Lee, Jong-Hoon Kim, Ho Seong Jang, Young Rag Do, and Heesun Yang, "Quantum-dot-based white lighting planar source through downconversion by blue electroluminescence," Opt. Lett. 39, 1208-1211 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1208

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited