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1D exciton band and exciton-phonon interaction in a single polymer chain

F. Dubin

cond-mat.mtrl-sciarXiv:cond-mat/0209199

Abstract

The excitonic luminescence of an isolated polydiacetylene polymer chain in its monomer matrix is studied by micro-photoluminescence. These chains behave as perfect 1D excitonic systems with the expected 1/sqrtE density of states between 5 and 50 K. The temperature dependence of the homogeneous width is quantitatively explained by interaction with longitudinal acoustic phonons of the crystal in the range of temperature explored.

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