Dynamics of Photogenerated Solitons in Trans-Polyacetylene
01 January 1988
Time-resolved absorption using probe wavelengths of 2.5-5.5microns has been used to study photoexcitations in the quasi-one-dimensional semiconductor, trans-polyacetylene. Our apparatus has 0.5 ps resolution, sufficient to observe the decay of the photogenerated charged soliton pairs which form after intrachain excitation of electron-hole pairs. The tunability of our apparatus permits us to unambiguously identify solitons and observe spectral relaxation during their formation.