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Highly efficient organic light-emitting diodes fabricated utilizing nickel-oxide buffer layers between the anodes and the hole transport layers |
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| Authors: | HC Im TW Kim JH Kim YK Kim |
| Affiliation: | a Research Institute of Information Display, Division of Electronic and Computer Engineering, Hanyang University, Seoul 133-791, South Korea b Department of Electronic Engineering, Hong-ik University, Seoul 121-791, South Korea c Department of Information Display Engineering and COMID, Hong-ik University, Seoul 121-791, South Korea |
| Abstract: | The electrical and the optical properties of organic light-emitting diodes (OLEDs) fabricated utilizing nickel-oxide (NiO) buffer layers between the anodes and the hole transport layers were investigated. The NiO layer was formed by using a thermally evaporated nickel thin film and a subsequent oxidation process. The tunneling holes in the OLED were increased due to the existence of the NiO layer between the anode and the hole transport layer, resulting in enhanced efficiency for the OLED. These results indicate that OLEDs with NiO buffer layers hold promise for potential applications in highly-efficient flat-panel displays. |
| Keywords: | 73 61 Ph 78 66 Qn |
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