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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/4530
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| タイトル: | Efficient organic light-emitting diodes with undoped active layers based on silole derivatives |
| 著者: | Murata, Hideyuki
Kafafi, Zakya H.
Uchida, Manabu |
| 発行日: | 2002-01-14 |
| 出版者: | American Institute of Physics |
| 誌名: | Applied Physics Letters |
| 巻: | 80 |
| 号: | 2 |
| 開始ページ: | 189 |
| 終了ページ: | 191 |
| DOI: | 10.1063/1.1432109 |
| 抄録: | We report on efficient molecular organic light-emitting diodes (MOLEDs) composed of novel silole derivatives as an electron transporting layer and an emissive layer. The silole derivative, 2,5-bis(2',2″-bipyridin-6-yl)-1,1-dimethyl-3,4-diphenylsilacyclopentadiene, used for the electron transport layer exhibits fast electron mobility of 2×10^<-4> cm^2/V s at 0.64 MV/cm measured by the time-of-flight technique. Another silole derivative, 1,2-bis(1-methyl-2,3,4,5-tetraphenyl silacyclopentadienyl)ethane, used for an emissive layer exhibits blue-green fluorescence with an absolute quantum yield of 97±3% in the solid state. The devices using silole derivatives show a very low operating voltage, an external electroluminescence quantum efficiency (η_<EL>) of 4.8 %, and luminous power efficiency of 9 lm/W at a brightness of 100 cd/m^2. This value of η_<EL> is the best efficiency achieved for MOLED using undoped emissive and carrier transport layers and is close to the theoretical limit for a device using a fluorescent emitter. |
| Rights: | Copyright 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in H. Murata, Z. H. Kafafi and M. Uchida, Applied Physics Letters, 80(2), 189-191 (2002) and may be found at http://link.aip.org/link/?APPLAB/80/189/1 |
| URI: | http://hdl.handle.net/10119/4530 |
| 資料タイプ: | publisher |
| 出現コレクション: | c10-1. 雑誌掲載論文 (Journal Articles)
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