Shapes of polarization sensitive photocurrent pulses in Ag/Pd nanocomposite films: influence of firing temperature

The results of investigation of the shapes of polarization-sensitive photocurrent pulses in nanocomposite Ag/Pd films with different temperatures of firing are presented. Ag/Pd nanocomposite films were produced in accordance with thick film technology at temperatures T = 773 and 1013 K. Photocurrent excitation was carried out by femtosecond laser pulses. The obtained polarization photocurrent dependencies are characteristic for photocurrent due to photon drag and surface photogalvanic effects. It was shown that longitudinal photocurrent pulse duration in 773 K films (26 ns) is significantly longer than in 1013 K films (3 ns). (paper)