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High magnetic field effect in organic light emitting diodes

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タイトル: High magnetic field effect in organic light emitting diodes
著者: Goto, Yuichiro 著作を一覧する
Noguchi, Takuya 著作を一覧する
Takeuchi, Utahito 著作を一覧する
Hatabayashi, Kunitada 著作を一覧する
Hirose, Yasushi 著作を一覧する
Uchida, Takayuki 著作を一覧する
Sasaki, Takehiko 著作を一覧する
Hasegawa, Tetsuya 著作を一覧する
Shimada, Toshihiro 著作を一覧する
キーワード: Organic light emitting diode
Magnetic field
Minority carrier
発行日: 2010年 7月
出版者: Elsevier B.V.
誌名: Organic Electronics
巻: 11
号: 7
開始ページ: 1212
終了ページ: 1216
出版社 DOI: 10.1016/j.orgel.2010.04.020
抄録: 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.
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 島田 敏宏


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