Study of lithium fluoride/tris(8-hydroxyquinolino)-aluminum interfacial chemistry using XPS and ToF-SIMS

被引：18

作者：

Song, WJ

So, SK

Wong, KW

Choi, WK

Cao, LL

机构：

[1] Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Hong Kong Baptist Univ, Dept Phys, Kowloon, Hong Kong, Peoples R China

[3] Hong Kong Baptist Univ, Ctr Surface Anal & Res, Kowloon, Hong Kong, Peoples R China

[4] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2004年 / 228卷 / 1-4期

关键词：

interfacial reaction; alq(3); organic light-emittng devices;

D O I：

10.1016/j.apsusc.2004.01.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The insertion of a thin LiF layer between Al and tris(8-hydroxyquinolino)-aluminum (Alq(3)) is a significant advance in the practical development of organic light-emitting devices (OLEDs). We studied the chemistry at the buried interface of LiF/Alq(3) using X-ray photoelectron spectroscopy (XPS) and time of flight secondary ion mass spectrometry (ToF-SIMS). Dramatic changes in Al 2p, N 1s, and O 1s line shapes were observed after LiF deposition. These changes were attributed to the partial substitution of hydroxyquinoline ligands of Alq(3) by F-, and the formation of hydroxyquinoline anions at the LiF/Alq(3) interface. The AlqF(-) structure of products was confirmed by ToF-SIMS. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：373 / 377

页数：5

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