Radiation-induced conductivity in poly(methylphenylsilylene) and poly(di-n-hexylsilylene) studied by time-resolved microwave conductivity

Abstract

The transient conductibility change resulting on nanosecond pulsed irradiation of poly-(methylphenylsilylene) (PMPS) and poly(di-n-hexylsilylene) (PDHS) has been studied using the time-resolved microwave conductivity (TRMC) technique from nanoseconds to milliseconds after the pulse. The transients show a dispersive decay. In PMPS, where the hole is the major charge carrier, the mobility at room temperature appears to decrease with time from an initial value of at least 3×10 -8 m 2 /V-s on a nanosecond time scale to a value 1 order of magnitude less at milliseconds