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Proceedings Paper

Effect of doping of Li-complex on charge injection and transport in tris(8-quinolato) aluminum layer
Author(s): Tetsuo Tsutsui; Takeshi Yasuda; Hisao Ikeda; Dechun Zou
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Paper Abstract

Thin buffer layers composed of tris(8-quinolato) aluminum (Alq) layer doped with Li-acetylacetonate (Li-acac), Mg-acac and magnesium metal were inserted between an MgAg cathode and an Alq electron transport layer in standard double-layer devices with the ITO/TPD/Alq/MgAg structure. The insertion of the buffer layers with Li-acac brought about large decrease in drive voltage. While the effects of Mg-acac and magnesium metal were smaller than the case of Li-acac. Electron drift mobility of Alq layers doped with Li-acac and magnesium metal was evaluated by using a time-of-flight method. Large increases of electron mobility as well as the increase of dark conductivity with doping were found.

Paper Details

Date Published: 2 February 2001
PDF: 6 pages
Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); doi: 10.1117/12.416889
Show Author Affiliations
Tetsuo Tsutsui, Kyushu Univ. (Japan)
Takeshi Yasuda, Kyushu Univ. (Japan)
Hisao Ikeda, Kyushu Univ. (Japan)
Dechun Zou, Kyushu Univ. (Japan)


Published in SPIE Proceedings Vol. 4105:
Organic Light-Emitting Materials and Devices IV
Zakya H. Kafafi, Editor(s)

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