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Organic light-emitting devices with a 2-(4-biphenyl)-5-(4-butylphenyl)-1,3,4-oxadiazole layer between the α-naphtylphenyliphenyl diamine and 8-hydroxyquinoline aluminum |
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| Authors: | Su Zhan Xie Ying-ge Yu Tao |
| Affiliation: | a School of Science, Beijing Jiao Tong University, Beijing 100044, People's Republic of China b Northwestern University for Agricultural and Forestry Science, Yangling Shaanxi 712100, People's Republic of China c The Quality Technology Verified and Testing Center, Xinyang, Henan 464000, People's Republic of China |
| Abstract: | Organic light-emitting devices (OLEDs) with a 2-(4-biphenyl)-5-(4-butylphenyl)-1,3,4-oxadiazole layer between the α-naphtylphenyliphenyl diamine and 8-hydroxyquinoline aluminum were fabricated using a vacuum evaporation method. Compared to the different thickness of the buffer layer, the OLEDs with the 1.0 nm buffer layer showed the maximum power efficiency. The enhancements in power efficiency result from an improved balance of hole and electron injections. After comparing among different density buffer layer, PBD are good candidates for hole-injecting buffer layer, and 1.0 nm PBD buffer layer shows better operational durability and life. |
| Keywords: | Organic light-emitting devices 2-(4-Biphenyl)-5-(4-butylphenyl)-1,3,4-oxadiazole Indium tin oxide Buffer layer Current efficiency |
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