Fabrication and characterization of hybrid DBPPV-CdSe/ZnS quantum dot light-emitting diodes

Chun Yuan Huang*, Ying Chih Chen, Hsin-Chieh Yu, Yan Kuin Su, Ten Chin Wen, Tzung Fang Guo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We have demonstrated the fabrication and characterization of single-layered hybrid polymer-quantum dot light-emitting diodes (PQD-LEDs) with the emissive composite film of 2,3-dibutoxy-l,4-poly(phenylene vinylene) (DBPPV) and CdSe/ZnS core/shell quantum dots (QDs). The electrical and optical characteristics are significantly influenced by the thickness of the emissive layer. When the thickness of composite film is thinned to about 103 nm, the maximum luminance of 4100 cd/m2 as well as maximum luminous efficiency of 1.35 cd/A can be achieved at 9.6 V and 7.6 V, respectively. However, the electroluminescence spectra reveal that the emission contribution is dominated by the emission from DBPPV. A maximum ratio of emission intensity of QDs to that of DBPPV is about 38%, which indicates the contribution of QDs is minor. In addition, the post-annealing effect on device performance was also investigated. In contrast to previous reports, no obvious improvement can be observed by post-annealing.

Original languageEnglish
Title of host publicationProceedings of the 2008 International Conference on Nanoscience and Nanotechnology, ICONN 2008
Pages192-195
Number of pages4
DOIs
StatePublished - 24 Nov 2008
Event2008 International Conference on Nanoscience and Nanotechnology, ICONN 2008 - Melbourne, VIC, Australia
Duration: 25 Feb 200829 Feb 2008

Publication series

NameProceedings of the 2008 International Conference on Nanoscience and Nanotechnology, ICONN 2008

Conference

Conference2008 International Conference on Nanoscience and Nanotechnology, ICONN 2008
CountryAustralia
CityMelbourne, VIC
Period25/02/0829/02/08

Keywords

  • CdSe/ZnS quantum dots
  • Hybrid light-emitting diodes
  • Polymer

Fingerprint Dive into the research topics of 'Fabrication and characterization of hybrid DBPPV-CdSe/ZnS quantum dot light-emitting diodes'. Together they form a unique fingerprint.

Cite this