Control of charge trapping in a photorefractive polymer Available to Purchase

Modification of the trap density of the photorefractive polymer composite $poly(N-vinyl carbazole)$ (PVK), $2,4,7-trinitro-9-fluorenone$ (TNF) and $N,N-diethyl-para-nitroaniline$ (EPNA) was achieved with the addition of $4-(diethylamino)benzaldehyde diphenylhydrazone$ (DEH). Measurements of the response time, the phase shift and the amplitude of the photorefractive grating are presented.