Solution-processed white light-emitting diode utilizing hybrid polymer and red-green-blue quantum dots

Byoung Wook Kwon, Dong Ick Son, Dong Hee Park, Heon Jin Choi, Won Kook Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A hybrid polymer-quantum dots (QDs) white light-emitting diode (WLEDs) device with a multi-layer structure by all solution processing is simply fabricated by using a spin coating technique. From transmission electron microscopy (TEM) study, red-green-blue (RGB) CdSe/ZnS QDs are mainly distributed along with the circumference of poly(N-vinylcarbazole) (PVK) surfaces, resulting in core-shell hybrid polymer-QDs of [RGB CdSe/ZnS QDs]/PVK. The Al/Cs 2CO 3/[RGB CdSe/ZnS QDs+PVK]/poly[(N,N0-bis(4- butylphenyl)-N,N0-bis(phenyl)benzidine)] (poly-TPD)/ poly(3,4- ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/indium-tin-oxide (ITO)/glass WLEDs shows electroluminescence (EL) centered at around 474, 544, and 629nm with CIE coordinates, 0:44; 0:32 at the forward bias +11 V, which clearly reveals that CdSe/ZnS QDs existing at the interface between PVK plays as a recombination center of exciton.

Original languageEnglish
Article number09MH03
JournalJapanese journal of applied physics
Volume51
Issue number9 PART3
DOIs
Publication statusPublished - 2012 Sep 1

Fingerprint

Semiconductor quantum dots
Light emitting diodes
light emitting diodes
quantum dots
polymers
Polymers
ITO glass
Coating techniques
circumferences
Spin coating
Electroluminescence
Temperature programmed desorption
sulfonates
Excitons
electroluminescence
indium oxides
laminates
tin oxides
coating
Styrene

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Kwon, Byoung Wook ; Son, Dong Ick ; Park, Dong Hee ; Choi, Heon Jin ; Choi, Won Kook. / Solution-processed white light-emitting diode utilizing hybrid polymer and red-green-blue quantum dots. In: Japanese journal of applied physics. 2012 ; Vol. 51, No. 9 PART3.
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Solution-processed white light-emitting diode utilizing hybrid polymer and red-green-blue quantum dots. / Kwon, Byoung Wook; Son, Dong Ick; Park, Dong Hee; Choi, Heon Jin; Choi, Won Kook.

In: Japanese journal of applied physics, Vol. 51, No. 9 PART3, 09MH03, 01.09.2012.

Research output: Contribution to journalArticle

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