PHOTOCARRIER GENERATION AND TRANSPORT IN A PARTIALLY POLYMERIZED POLYDIACETYLENE

Steady-state and transient photoconductivities have been investigated as a function of electric field, light intensity and temperature in si ngle crystals of partially polymerized polydiacetylene, 1,4-bis(3-quin ol)-1,3-butadiyne, with conjugating side groups. The polarization depe ndence of the steady-state photocurrent was also investigated. The one -dimensional Onsager theory of geminate recombination qualitatively ac counts for the experimental results. Deviation from the theory is obse rved in the temperature dependence of the transient peak photocurrent at temperatures below 100 K.