Distinguishing between interface dipoles and band bending at metal/tris-(8-hydroxyquinoline) aluminum interfaces

被引：76

作者：

Hill, IG ^{[1
]}

Mäkinen, AJ ^{[1
]}

Kafafi, ZH ^{[1
]}

机构：

[1] USN, Div Opt Sci, Res Lab, Washington, DC 20375 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 12期

关键词：

D O I：

10.1063/1.1310637

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a combination of photoelectron spectroscopies and ellipsometry to study the thin-film growth of Alq(3) (tris-(8-hydroxyquinoline) aluminum) on Ag, we have been able to distinguish between molecular orbital energy shifts due to "band bending" and interface dipole formation. We have observed large binding energy shifts (approximate to 0.5 eV) of the organic molecular levels at low coverages. We conclude that these shifts are consistent with the formation of a polarized molecular layer, or interface dipole, and are inconsistent with an electrostatic band-bending model. (C) 2000 American Institute of Physics. [S0003-6951(00)01538-2].

引用

页码：1825 / 1827

页数：3

共 20 条

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