Determination of the energy levels of a phosphorescent guest in organic light emitting devices

被引：15

作者：

Hill, IG ^{[1
]}

Mäkinen, AJ ^{[1
]}

Kafafi, ZH ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 13期

关键词：

D O I：

10.1063/1.1311952

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have used photoelectron spectroscopy to study the relative binding energies of the highest occupied molecular orbitals (HOMOs) of the phosphorescent guest, 2, 3, 7, 8, 12, 13, 17, 18octaethyl-21H,23H-porphine platinum (PtOEP), and the organic electron transport host, tris(8-hydroxyquinolinato) aluminum (III) (Alq(3)) in PtOEP:Alq(3) composite films. The PtOEP HOMO position was found to be 0.50 +/- 0.13 eV above that of the Alq(3) host, independent of the guest molecule concentration (0.8%-22% by mass). These results are consistent with the assumption that the vacuum levels of the guest and host align. (C) 2000 American Institute of Physics. [S0003-6951(00)00739-7].

引用

页码：2003 / 2005

页数：3

共 14 条

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