Effect of the ionizing radiation on poly(4,4 '-dipentoxy-2,2 '-bithiophene) films electrosynthesized on indium-tin oxide plates

The optical and electrical characteristics of poly(4,3'-dopenthoxy-2,2'bith iophene) films on indium-tin oxide plates change slightly when irradiated w ith ionizing radiations, and the optical absorbance of the substrate increa ses in the W-visible range. After irradiation, a charge injection from the substrate to the polymer occurs in time, leading to the formation of cation states inside the polymer at low dose rates and to the formation of an ins ulating polymer layer at the polymer-substrate interface at high dose rates . (C) 1999 Elsevier Science Ltd. All rights reserved.