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
- Title
- 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
- Author
- 김태환
- Keywords
- Absorbances; Blue OLEDs; Cdse; CdSe/ZnS; CdSe/ZnS quantum dots; Color conversions; Electrical and optical propertiesElectroluminescence spectra; Exciton peak; Hole current; Hole transport layers; Hole trapping; Organic light-emitting devices; Photoluminescence spectrum; Poly(N-vinylcarbazole)
- Issue Date
- 2012-05
- Publisher
- OSA Publishing
- Citation
- Optical Materials Express, Vol.2, No.5 [2012], p1-8
- 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/m(2) and that the dominant exciton peak was shifted to longer wavelength.
- URI
- https://www.osapublishing.org/ome/abstract.cfm?uri=ome-2-5-663http://hdl.handle.net/20.500.11754/67028
- ISSN
- 2159-3930
- DOI
- 10.1364/OME.2.000663
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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