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ID 25942
本文ファイル
著者
Kai, Hiroyuki 大学院工学研究院
Ohshita, Joji 大学院工学研究院 広大研究者総覧
Ohara, Sayaka
Nakayama, Naohiro
Kunai, Atsutaka
Lee, In-Sook
Kwak, Young-Woo
キーワード
Silole
OLED
Electron-transport
Theoretical calculation
NDC
化学
抄録(英)
Optical, electrochemical, and electron-transporting properties of disilane- and siloxane-bridged biphenyl and bithiophene derivatives were investigated, in comparison with those of the monosilane-bridged analogues (siloles). The UV spectra and cyclic voltammograms indicated that elongation of the silicon bridge suppresses the π-conjugation, in accordance with the results of DFT calculations. The DFT calculations indicated also that the dislane-bridged biphenyl and siloxane-bridged bithiophene should have the low-lying HOMOs and LUMOs. The electron transporting properties were evaluated by the performance of triple-layered OLEDs having vapor deposited films of the Si-bridged compound, Alq3, and TPD, as the electron-transport, emitter, and hole-transport, respectively. Of these, the device with a disilane-bridged biphenyl exhibited the high performance with the maximum current density of 590 mA/cm2 at the applied electric field of 12 × 107 V/m (applied bias voltage = 12 V) and the maximum luminance of 22,000 cd/m2 at 13 × 107 V/m.
掲載誌名
Journal of Organometallic Chemistry
693巻
23号
開始ページ
3490
終了ページ
3494
出版年月日
2008-11-01
出版者
Elsevier Science S.A.
ISSN
0022-328X
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2008 Elsevier B.V.
関連情報URL
部局名
工学研究科