Dynamics of photoexcitations in cis-polyacetylene

Masayuki Yoshizawa, Takayoshi Kobayashi, Hitoshi Fujimoto, Jiro Tanaka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The photoinduced absorption of cis-(CH)x has been investigated by nanosecond time-resolved spectroscopy. Photoinduced absorption at 1.55 eV and bleaching of the interband transition at 2.05 eV are observed. The photoinduced absorbance change decays as exp[-(t/)1/2] with =2.30.2 s at 80 K. The photoinduced absorption is considered to be due to exciton bipolarons or polarons. The decay kinetics is interpreted by the trapping model, i.e., an excited species disappears at traps after a one-dimensional random walk.

Original languageEnglish
Pages (from-to)8988-8991
Number of pages4
JournalPhysical Review B
Issue number15
Publication statusPublished - 1988


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