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3,4,9,10-Perylenetetracarboxylicdiimide as an interlayer for ultraviolet organic light emitting diodes |
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| Authors: | Alan Man-Ching Ng Kai-Hang Tam Wai-Kin Chan Kok-Wai Cheah Jesse Chan |
| Affiliation: | a Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong b Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong c Department of Physics, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong d School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia |
| Abstract: | Ultraviolet organic light emitting diodes with 3,4,9,10-perylenetetracarboxylicdiimide (PTCDI) interlayer have been achieved. The emission spectrum and intensity were strongly dependent on the thickness of PTCDI interlayer, in spite of the fact that PTCDI has neither much lower HOMO nor much higher LUMO level, which is considered necessary for efficient charge blocking layers. The influence of PTCDI layer was investigated in three different device configurations and obtained results are discussed. For optimal device configuration, OLED with emission centered at 370 nm and turn-on voltage of 4.5 V is obtained. |
| Keywords: | Organic light emitting diodes Optoelectronic devices |
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