ELECTRIC-FIELD MODULATED SPECTRA OF POLYDIACETYLENE SINGLE-CRYSTAL (PTS)

被引：61
作者：
SEBASTIAN, L
WEISER, G
机构：
[1] Fachbereich Physik der Philipps-Universität, Marburg
来源：
CHEMICAL PHYSICS LETTERS | 1979年 / 64卷 / 02期
关键词：
D O I：
10.1016/0009-2614(79)80540-0
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 electroreflectance and electroabsorption spectra of PTS single crystals show a unique dependence on the orientation of the external feld which reflects the quasi one-dimensional character of the π-electron system of the polymer chain. Above the range of excitonic transitions a strong electroreflectance signal indicates the onset of interband transitions near 2.44 eV. Excitonic and interband transitions are observed for polarization of light parallel as well as perpendicular to the chain. Below the absorption edge a weak transition is found at 1.75 eV which may be correlated to the comparably high photoresponse in this region. © 1979.
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页码：396 / 400
页数：5
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