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Alq₃ 두께 변화에 따른 유기 발광 소자의 내장 전압Built-in Voltage in Organic Light-emitting Diodes depending on the Alq₃ Layer Thickness
- Other Titles
- Built-in Voltage in Organic Light-emitting Diodes depending on the Alq₃ Layer Thickness
- Issue Date
- 2008
- Publisher
- 한국전기전자재료학회
- Keywords
- Built-in voltage; Organic light-emitting diodes; Modulated photocurrent
- Citation
- 전기전자재료학회논문지, v.21, no.3, pp.255 - 259
- Journal Title
- 전기전자재료학회논문지
- Volume
- 21
- Number
- 3
- Start Page
- 255
- End Page
- 259
- ISSN
- 1226-7945
- Abstract
- Built-in voltage in ITO/Alq₃/Al organic light-emitting diodes was studied by varying a thickness of Alq₃ layer using modulated photocurrent technique at ambient condition. A thickness of the Alq₃ layer was varied from 100 to 250 nm. From the bias voltage-dependent photocurrent, built-in voltage of the device was able to be determined. The obtained built-in voltage is about 0.8 V irrespective of the Alq₃ layer thickness in the device. This value of built-in voltage confirms that the built-in voltage is generated due to a difference of work function of the anode and cathode. The Alq3 layer thickness independent built-in voltage indicates that the built-in electric field in the device is uniform across the organic layer.
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Collections - College of Engineering > Department of Science > 1. Journal Articles
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Related Researcher
- Kim, Tae Wan
- Engineering (Applied Science)