Highly Efficient Organic Light Emitting Diodes with Hole Injection Layer of Thermally Evaporated Molybdenum Oxide
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- Title
- Highly Efficient Organic Light Emitting Diodes with Hole Injection Layer of Thermally Evaporated Molybdenum Oxide
- Authors
- Hong, K; Lee, JL
- Date Issued
- 2009-12
- Publisher
- KOREAN INST METALS MATERIALS
- Abstract
- Thermally evaporated MoO3 film was deposited to coated indium tin oxide (ITO) anode in organic light-emitting diodes (OLEDs) and its effect on the improvement of electroluminescence were studied. O-2 plasma treated ITO (O-2-ITO) and MoO3-coated ITO were ex-situ investigated using synchrotron radiation photoemission spectroscopy. The work function of MoO3-coated ITO was higher by 0.35 eV than that of O-2-ITO. Thus, the hole injection barrier at the interface could be reduced by the deposition Of MoO3, resulting in reduction of operation voltage from 16.5 to 14.6 V at 100 mA/cm(2) and enhancement of the electroluminescence property of OLEDs.
- Keywords
- organic light emitting diodes; molybdenum oxide; synchrotron radiation photoemission spectroscopy; INTERFACE; ANODE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27537
- DOI
- 10.3365/EML.2009.12.151
- ISSN
- 1738-8090
- Article Type
- Article
- Citation
- ELECTRONIC MATERIALS LETTERS, vol. 5, no. 4, page. 151 - 155, 2009-12
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