ELECTROABSORPTION SPECTROSCOPY OF ELECTRONIC-STRUCTURES IN POLYSILANES

被引：5

作者：

TACHIBANA, H ^{[1
]}

KAWABATA, Y ^{[1
]}

KOSHIHARA, S ^{[1
]}

TOKURA, Y ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

来源：

SYNTHETIC METALS | 1991年 / 41卷 / 03期

关键词：

Polymers - Electronic Properties - Spectroscopy; Absorption;

D O I：

10.1016/0379-6779(91)91631-J

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electro-absorption (EA) spectra and their temperature-dependence have been investigated for thin films of poly(dihexylsilane) (PDHS) and poly(dibutylsilane) (PDBS), which show the backbone conformations of the all-trans planar and the 7/3 helical type, respectively. In both of the polysilanes, EA spectra have revealed the field-activated (one-photon forbidden) transitions which are positioned at energies 0.8 eV higher than the lowest singlet exciton states. EA spectra in PDHS have further revealed an exciton state at ca. 5.6 eV characteristic of the all-trans planar conformation, possibly including two-electron excited configurations.

引用

页码：1385 / 1388

页数：4

共 8 条

[1]

FARMER BL, 1988, B AM PHYS SOC, V33, P657

[2] SYNTHESIS OF ORGANOPOLYSILANES USING A CROWN ETHER [J].