Thermal Properties of Conduction Current and Carrier Behaviors in Organic Electroluminescent Device
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- Minagawa Masahiro
- Graduate School of Science and Technology, Niigata University
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- Shinbo Kazunari
- Graduate School of Science and Technology, Niigata University
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- Kato Keizo
- Graduate School of Science and Technology, Niigata University
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- Kaneko Futao
- Graduate School of Science and Technology, Niigata University
Bibliographic Information
- Other Title
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- 有機EL素子における電気伝導の温度特性とキャリア挙動
- ユウキ EL ソシ ニ オケル デンキ デンドウ ノ オンド トクセイ ト キャリア キョドウ
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Abstract
Organic Electroluminescent device (OLED) was fabricated using a vacuum evaporation method and thermal properties were investigated. The OLED has an Indium Tin Oxide (ITO)/ N,N'-diphenyl-N,N'- bis(3-methylphenyl) 1- 1'biphenyl- 4,4'-diamine (TPD)/ tris- (8-hydroxyquinoline) aluminum (Alq)/ Lithium fluoride (LiF)/ aluminum (Al) structure. An electron dominant device of an Al/ Alq/ LiF/ Al structure, or a hole dominant device of an ITO/ TPD/ Al structure was also fabricated in order to study the carrier behavior in the OLEDs. The current density vs. voltage (J-V) properties with various thickness of organic layers were investigated in the both electron and hole dominant devices, and the thermal dependence of J-V properties was observed in the devices. At room temperature, conductions in large current region were considered to be due to space-charge-limited current for all the devices. Especially, for the Al/ Alq/ LiF/ Al device and the OLED, J∝Vm+1 relationships were observed across wide current region. At low temperature, tunnel currents were estimated for the ITO/TPD/Al device. For the Al/ Alq/ LiF/ Al device and the OLED, J∝Vm+1 relationships were observed across wide current region at low temperature.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 127 (10), 635-641, 2007
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204594716416
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- NII Article ID
- 10019959289
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 8959991
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed