Excitation dynamics in disubstituted polyacetylene

被引：49

作者：

Gontia, I ^{[1
]}

Frolov, SV

Liess, M

Ehrenfreund, E

Vardeny, ZV

Tada, K

Kajii, H

Hidayat, R

Fujii, A

Yoshino, K

Teraguchi, M

Masuda, T

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Osaka Univ, Dept Elect Engn, Osaka 565, Japan

[3] Kyoto Univ, Div Polymer Chem, Sakyo Ku, Kyoto 606, Japan

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.82.4058

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the excitation dynamics in films of disubstituted polyacetylene, a degenerate groundstate conjugated polymer, using psec transient and steady-state spectroscopies. The polymer is found to support charged and neutral topological soliton excitations concurrent with a strong intrinsic photoluminescence band with quantum efficiency, eta similar or equal to 50%. This leads to stimulated emission in thin films and lasing in cylindrical mu cavities. The seeming contradiction of a degenerate ground-state polymer with high eta is explained by the lowest excited-state ordering.

引用

页码：4058 / 4061

页数：4

共 30 条

[1] Electron-lattice relaxation, and soliton structures and their interactions in polyenes [J].