Danielsen, P. L. and Ball, Robin (1985) A theoretical study of photoluminescence quenching in cis-polyacetylene. Journal de Physique, Vol.46 (No.10). pp. 1611-1622. doi:10.1051/jphys:0198500460100161100 ISSN 0302-0738.

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Abstract

The non-radiative decay of photoinduced bond-alternation defects in cis-polyacetylene is considered within the SSH model [18]. The charge-conjugation symmetry of the simplest model Hamiltonian must be violated to explain the low photoluminescent yield (˜ 10-3 %) found experimentally. The simplest such route, that of electron-phonon coupling via second nearest-neighbour hopping is considered. It is found that a multiphonon process is required, the resulting decay rate being very sensitive to the parameters chosen. If this is the dominant non-radiative process, then it gives a potentially highly accurate method of determining the value of α, the nearest-neighbour electron-phonon coupling constant. The results for cis-polyacetylene can be generalized to give a qualitative understanding of photoluminescent properties of more complex conjugated molecules.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Photoluminescence, Electron-phonon interactions, Polymers
Journal or Publication Title:	Journal de Physique
Publisher:	Editions Physique
ISSN:	0302-0738
Official Date:	1985
Dates:	Date Event 1985 Published
Volume:	Vol.46
Number:	No.10
Page Range:	pp. 1611-1622
DOI:	10.1051/jphys:0198500460100161100
Status:	Peer Reviewed
Publication Status:	Published

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