Space-charge-limited transient photoconductivity in polymers

Space-charge-limited (SCL) photoconductivity in transient regime and its mo dification, T-SCLC (transient space-charge-limited currents), are readily o bserved in high resistivity materials with mobile carriers and thus may be with advantage used as a tool for the study of the density of localized sta tes (DOS) in organic molecular semiconductors. The only prerequisite for th e experimental observation of SCL photoconductivity is a reasonably long Ma xwell relaxation time. This paper presents the new possibilities of the T-SCLC method for elucidat ion of the DOS in organic molecular solids with practical examples of model ing, reconstruction of post-transit data and its application for a typical polymer - poly(methylphenylsilylene).