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Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
High magnetic field effect in organic light emitting diodes
| Title: | High magnetic field effect in organic light emitting diodes |
| Authors: | Goto, Yuichiro Browse this author | | Noguchi, Takuya Browse this author | | Takeuchi, Utahito Browse this author | | Hatabayashi, Kunitada Browse this author | | Hirose, Yasushi Browse this author | | Uchida, Takayuki Browse this author | | Sasaki, Takehiko Browse this author | | Hasegawa, Tetsuya Browse this author | | Shimada, Toshihiro Browse this author →KAKEN DB |
| Keywords: | Organic light emitting diode | | Magnetoconductance | | Magnetic field | | Minority carrier | | Efficiency |
| Issue Date: | Jul-2010 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Organic Electronics |
| Volume: | 11 |
| Issue: | 7 |
| Start Page: | 1212 |
| End Page: | 1216 |
| Publisher DOI: | 10.1016/j.orgel.2010.04.020 |
| Abstract: | Fluorescent and phosphorescent organic light emitting diodes (OLEDs) were measured in high magnetic field up to 9 T. The current efficiency steeply increased below 100 mT as reported but gradually decreased when the field was larger. In the range of 0.1-6.5 T, the decrease was proportional to the square of the magnetic field, whereas in the range between 6.5 T and 9 T, it was proportional to the square root of the magnetic field. In contrast, phosphorescent OLED did not show magnetic field dependence. Unipolar devices of n-type Alq3 (tris-(8-hydroxyquinolino) aluminum) and p-type α-NPD (N',N'-Di(naphthalene-1-yl)-N,N'-dipheyl-benzidine) showed positive linear magnetoresistance only for minority carriers. The mechanism of the quadratic dependence of the electroluminescent intensity is discussed based on the experimental results. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/43180 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 島田 敏宏
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