Optical properties of amorphous polyazomethine thin films

被引：24

作者：

Jarzabek, B. ^{[1
]}

Weszka, J. ^{[1
]}

Domanski, M. ^{[1
]}

Jurusik, J. ^{[1
]}

Cisowski, J. ^{[1
]}

机构：

[1] Polish Acad Sci, Ctr Polymer Chem, Dept Phys, PL-41819 Zabrze, Poland

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 9-20期

关键词：

amorphous semiconductors; chemical vapor deposition; absorption; optical spectroscopy; polymers and organics;

D O I：

10.1016/j.jnoncrysol.2005.11.107

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Optical transmission and fundamental reflectivity spectra of amorphous thin films of the basic aromatic polyazomethine, i.e., 1,4-phenylene-methylenenitrilo-1,4-phenylenenitrilomethylene (PPI), prepared by chemical vapor deposition (CVD) method via the polycondensation process have been investigated. The absorption coefficient of PPI films reveals a significant broad band at 2.9 eV and the others, much weaker at 4.0 and 4.9 eV. The absorption edge follows the Tauc relation typical for amorphous semiconductors yielding the energy gap in the range 2.28-2.42 eV. The electronic structure of films and possible optical transitions, depending on changes in planarization of the PPI backbone under different deposition conditions, are discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1660 / 1662

页数：3

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