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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 5 — May. 1, 2012
  • pp: 663–670

Electrical and optical properties of blue organic light-emitting devices fabricated utilizing color conversion CdSe and CdSe/ZnS quantum dots embedded in a poly(N-vibyl carbazole) hole transport layer

Young Pyo Jeon, Sung June Park, and Tae Whan Kim  »View Author Affiliations


Optical Materials Express, Vol. 2, Issue 5, pp. 663-670 (2012)
http://dx.doi.org/10.1364/OME.2.000663


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Abstract

Blue organic light-emitting devices (OLEDs) with color conversion quantum dots (QDs) embedded in a poly(N-vinyl carbazole) (PVK) hole transport layer (HTL) were fabricated. The absorbance and the photoluminescence spectra for the CdSe and the CdSe/ZnS QDs showed dominant exciton peaks. Current densities as functions of the voltage showed enhanced hole trapping and a decreased hole current in the OLEDs containing CdSe and CdSe/ZnS QDs embedded in a HTL. The phenomena were intensified due to the existence of the ZnS shell. The luminance-voltage curve and the electroluminescence spectra showed that the brightness of the blue OLEDs fabricated utilizing the HTL based on CdSe and CdSe/ZnS QDs embedded in a PVK layer reached over 3,000 cd/m2 and that the dominant exciton peak was shifted to longer wavelength.

© 2012 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.5170) Optical devices : Photodiodes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices

ToC Category:
Fluorescent and Luminescent Materials

History
Original Manuscript: February 16, 2012
Revised Manuscript: April 5, 2012
Manuscript Accepted: April 6, 2012
Published: April 20, 2012

Virtual Issues
Quantum Dots for Photonic Applications (2012) Optical Materials Express

Citation
Young Pyo Jeon, Sung June Park, and Tae Whan Kim, "Electrical and optical properties of blue organic light-emitting devices fabricated utilizing color conversion CdSe and CdSe/ZnS quantum dots embedded in a poly(N-vibyl carbazole) hole transport layer," Opt. Mater. Express 2, 663-670 (2012)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-5-663


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