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White light-emitting diodes fabricated utilizing hybrid polymer-colloidal ZnO quantum dots
- Authors
- Son, Dong Ick; You, Chan Ho; Kim, Won Tae; Kim, Tae Whan
- Issue Date
- Sep-2009
- Publisher
- IOP PUBLISHING LTD
- Citation
- NANOTECHNOLOGY, v.20, no.36, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 20
- Number
- 36
- Start Page
- 1
- End Page
- 5
- ISSN
- 0957-4484
- Abstract
- White light-emitting diodes (WLEDs) with a hybrid poly N-vinylcarbazole (PVK) and poly(methyl methacrylate) (PMMA) polymer and ZnO quantum dots (QDs) were fabricated by a spin-coating technique. Transmission electron microscopy images showed that the ZnO QDs were predominantly distributed at the circumference of the surface of the PVK polymer. Electroluminescence spectra for hybrid polymer-QD WLEDs showed a broad peak around 600 nm. The Commission Internationale de I'Eclairage chromaticity coordinates of the WLEDs fabricated utilizing hybrid polymer-QD WLEDs at 10 V were (0.39, 0.41), indicative of a white emission. The luminescence mechanisms of the WLEDs are described.
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