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Enhancement Mechanisms of the Color Purity in Blue Organic Light-Emitting Devices Fabricated Utilizing an Emitting Layer Containing Mixed Fluorescence and Phosphorescence Host Materials
- Authors
- Bang, Hyun Sung; Choo, Dong Chul; Kim, Tae-Won; Lee, Suk Jae; Seo, Jeong Hyub; Kim, Young Kwan
- Issue Date
- Oct-2011
- Publisher
- Taylor & Francis
- Keywords
- Blue organic light-emitting devices; color purity; mixed host emitting layer; driving voltage; electroluminescence; color coordinates
- Citation
- Molecular Crystals and Liquid Crystals, v.551, pp 33 - 39
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Molecular Crystals and Liquid Crystals
- Volume
- 551
- Start Page
- 33
- End Page
- 39
- ISSN
- 1542-1406
1543-5318
- Abstract
- The electrical and optical properties of blue organic light-emitting devices (OLEDs) containing a mixed host emitting layer (EML) consisting of a 1,3-bis(carbazole-9-yl) benzene (mCP) layer and a 3-tert-butyl-9,10-di(naphtha-2-yl) anthracene (TBADN) layer were investigated. The driving voltage of the OLEDs with a mixed host EML was smaller than that of the OLEDs with a single EML. The electroluminescence spectra for OLEDs containing a mixed host EML showed a dominant peak related to the mCP or the TBADN layer. The color coordinates of the OLEDs containing a 5% TBADN-doped mCP EML were (0.146, 0.091), indicative of the deep blue color coordinates.
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