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New Amorphous Hole Blocking Materials for High Efficiency OLEDs
- Authors
- Jung, Sung Ouk; Park, Jong-Won; Kang, Dong Min; Kim, Jeong-Sik; Park, Sung-Jin; Kang, Pengtao; Oh, Hyoung-Yun; Yang, Jung-Hwan; Kim, Yun-Hi; Kwon, Soon-Ki
- Issue Date
- Sep-2008
- Publisher
- American Scientific Publishers
- Keywords
- Amorphous; Hole-Blocking Materials; Thiadiazole; Oxadiazole
- Citation
- Journal of Nanoscience and Nanotechnology, v.8, no.9, pp 4838 - 4841
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Nanoscience and Nanotechnology
- Volume
- 8
- Number
- 9
- Start Page
- 4838
- End Page
- 4841
- ISSN
- 1533-4880
1533-4899
- Abstract
- Two new amorphous molecular materials, 2,5-bis(2',5'-dimethyl-4-triphenylsilyl-phenyl)-[1,3,4]oxadiazole (BDTSO) and 2,5-bis(2',5'-dimethyl-4-triphenylsilyl-phenyl)-[1,3,4]thiadiazo1e (BDTST) were synthesized and investigated as hole blocking materials (HBM) for organic light-emitting diodes. The efficiency of electroluminescent device was improved by using BDTSO instead of BAlq. The current and power efficiency of the device using BDTSO as HBM is 39.6 cd/A and 13.1 lm/W at 10 mA/cm(2), respectively, which is higher compared to the same values for devices using BDTST and BAq which are typically used as HBM.
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