Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2008.04b
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- Pages.14-16
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- 2008
Built-in voltage depending on electrode in organic light-emitting diodes
전극 변화에 따른 유기 발광 소자의 내장 전압
- Yoon, Hee-Myoung (Hongik Univ.) ;
- Lee, Eun-Hye (Hongik Univ.) ;
- Lee, Won-Jae (Kyungwon Univ.) ;
- Chung, Dong-Hoe (Kwangwoon Univ.) ;
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Oh, Young-Cheul
(Kwangwoon Univ.) ;
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Kim, Tae-Wan
(Hongik Univ.)
- Published : 2008.04.25
Abstract
Built-in voltage in organic light-emitting diodes was studied using modulated photocurrent technique ambient conditions. From the bias voltage-dependent photocurrent, built-in voltage of the device is determined. The applied bias voltage when the magnitude of modulated photocurrent is zero corresponds to a built-in voltage. Built-in voltage in the device is generated due to a difference of work function of the anode and cathode. A device was made with a structure of anode/