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2022-12-15T03:35:44Z
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Excitation Dynamics in Disubstituted Polyacetylene
Gontia, I.
Frolov, S. V.
Liess, M.
Ehrenfreund, E.
Vardeny, Z. V.
Tada, K.
Hidayat, R.
Fujii, A.
Yoshino, K.
Teraguchi, M.
Masuda, T
We studied the excitation dynamics in films of disubstituted polyacetylene, a degenerate ground-state 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, η= 50%. This leads to stimulated emission in thin films and lasing in cylindrical μ cavities. The seeming contradiction of a degenerate ground-state polymer with highη is explained by the lowest excited-state ordering.
American Physical Society
1999-05
eng
journal article
VoR
http://hdl.handle.net/10191/24122
https://niigata-u.repo.nii.ac.jp/records/2488
http://doi.org/10.1103/physrevlett.82.4058
AA00773679
0031-9007
Physical Review Letters
80
20
4058
4061
https://niigata-u.repo.nii.ac.jp/record/2488/files/80_20_4058-4061.pdf
application/pdf
172.9 kB
2019-07-29