Stable binary complementary white light-emitting diodes based on quantum-dot/polymer-bilayer structures

Zhanao Tan, Brittany Hedrick, Fan Zhang, Ting Zhu, Jian Xu, Ron H. Henderson, Jerzy Ruzyllo, Andrew Y. Wang

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A binary complementary white light-emitting diode (LED) was designed and fabricated by employing a colloidal quantum-dot (QD)/polymer-bilayer configuration in the device active region. Stable white electroluminescence is observed from the cumulative emission of the yellow-emitting CdSe-ZnS core-shell QDs and blue-emitting poly(N,N'-bis (4-butylphenyl)-N,N'-bis(phenyl)benzidine) (Poly-TPD) molecules. The white chromaticity of the LED output can be tailored by varying the respective thicknesses of the constituent emissive layers; whereas the emission color exhibits little dependence on the applied bias over a wide voltage range. The maximum luminance of the device reaches 2600 cd/m 2 under a bias of 9.4 V.

Original languageEnglish (US)
Pages (from-to)1998-2000
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
Issue number23
DOIs
StatePublished - Dec 1 2008

Fingerprint

Semiconductor quantum dots
Light emitting diodes
Polymers
light emitting diodes
quantum dots
polymers
Electroluminescence
Temperature programmed desorption
luminance
electroluminescence
Luminance
Color
color
Molecules
output
Electric potential
electric potential
configurations
molecules
benzidine

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Tan, Zhanao ; Hedrick, Brittany ; Zhang, Fan ; Zhu, Ting ; Xu, Jian ; Henderson, Ron H. ; Ruzyllo, Jerzy ; Wang, Andrew Y. / Stable binary complementary white light-emitting diodes based on quantum-dot/polymer-bilayer structures. In: IEEE Photonics Technology Letters. 2008 ; Vol. 20, No. 23. pp. 1998-2000.
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Stable binary complementary white light-emitting diodes based on quantum-dot/polymer-bilayer structures. / Tan, Zhanao; Hedrick, Brittany; Zhang, Fan; Zhu, Ting; Xu, Jian; Henderson, Ron H.; Ruzyllo, Jerzy; Wang, Andrew Y.

In: IEEE Photonics Technology Letters, Vol. 20, No. 23, 01.12.2008, p. 1998-2000.

Research output: Contribution to journalArticle

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T1 - Stable binary complementary white light-emitting diodes based on quantum-dot/polymer-bilayer structures

AU - Tan, Zhanao

AU - Hedrick, Brittany

AU - Zhang, Fan

AU - Zhu, Ting

AU - Xu, Jian

AU - Henderson, Ron H.

AU - Ruzyllo, Jerzy

AU - Wang, Andrew Y.

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AB - A binary complementary white light-emitting diode (LED) was designed and fabricated by employing a colloidal quantum-dot (QD)/polymer-bilayer configuration in the device active region. Stable white electroluminescence is observed from the cumulative emission of the yellow-emitting CdSe-ZnS core-shell QDs and blue-emitting poly(N,N'-bis (4-butylphenyl)-N,N'-bis(phenyl)benzidine) (Poly-TPD) molecules. The white chromaticity of the LED output can be tailored by varying the respective thicknesses of the constituent emissive layers; whereas the emission color exhibits little dependence on the applied bias over a wide voltage range. The maximum luminance of the device reaches 2600 cd/m 2 under a bias of 9.4 V.

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JO - IEEE Photonics Technology Letters

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