| Autor: |
Sai-Wing Tsang, J. Zhang, Daniel Grozea, Y. Y. Yuan, Zheng-Hong Lu, Seung Hee Han |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
Organic Light Emitting Materials and Devices X. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.683415 |
| Popis: |
CuPc:C 60 Organic-Fullerene composites together with metals such as Au are found to form efficient hole injection structures for organic light-emitting diodes. C 60 concentration of 30 wt.% yielded optimum device characteristics including low driving voltage, high current efficiency, and high thermal stability. In the case of Au/CuPc:C 60 anode structure, extremely high current efficiency of ∼ 8.7 cd/A and low operating voltage (i.e. 20 mA/cm 2 at ∼8V) has been achieved in a simple bi-layer device using Alq as emitter. Through a study on single carrier devices, the versatility of the composite injection structure is attributed to that C 60 in the composite layer facilitate hole transfer from the metals to the composite whereas CuPc facilitate hole transport and transfer to a hole transport layer. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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