photodetector biased on zno nanoparticles/poly-tpd organic material

In the present study, a photodetector was prepared by depositing pedo tpss and tpd polymer on porous silicon (psi) substrates using spin coating technique. the response time of the manufactured psi/pedotpss/tpd detector (by illuminating the sample with a 250 w/cm2 tungsten lamp) was 8.83s and measured in the second scale. the detection, specific detectivity, and responsivity of the both detectors were found as 3.395x10^9w-1, 1.967x10^9 w-1 hz1/2 cm and 5.188x10^-3 a/w, respectively. the incorporation of zno nanoparticles with a tpd polymer improved the detection, specific detectivity, optical response, and detector response time to 74.62x10^9 w-1, 43.25x10^9 w-1 hz 1/2 cm ,1893.16x10-3 a/w, and 1.06066 s, respectively. the hall effect measurements revealed that the n-type nanoparticles have the carrier concentration around -3.90×10^17 cm-3.