Time-resolved photoluminescence characterisation of thin PTCDA films on Si(100)

被引：14

作者：

Kobitski, AY ^{[1
]}

Salvan, G ^{[1
]}

Wagner, HP ^{[1
]}

Zahn, DRT ^{[1
]}

机构：

[1] Tech Univ, Inst Phys, D-09107 Chemnitz, Germany

来源：

APPLIED SURFACE SCIENCE | 2001年 / 179卷 / 1-4期

关键词：

PTCDA; time-resolved photoluminescence; excimer; monomer;

D O I：

10.1016/S0169-4332(01)00281-1

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：

3,4,9,10-Perylenetetracarboxylic dianhydride (PTCDA) thin films on Si(100) substrate are investigated by time-resolved photoluminescence (PL). A sub-band structure together with a bi-exponential decay of the PL spectra have been observed which are attributed to excimer and monomer recombination processes. A comparison with single PTCDA crystals shows that the excimer transition is related to the crystallinity of the PTCDA films. The dependence of the photoluminescence intensity and decay times on the film thickness and on the substrate temperature give further information about the crystallinity of PTCDA films. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 212

页数：4

共 7 条

[1] Study of localized and extended excitons in 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) .1. Spectroscopic properties of thin films and solutions [J].