国产成人亚洲精品无码青app,白丝紧致爆乳自慰喷水,国产疯狂女同互磨高潮在线观看,jizzjizz少妇亚洲水多

SnS and Ag films were deposited on glass substrates by vacuum thermal evaporation?successively, and then the thin films were annealed at 260℃ in N2 for different times (60min, 120min,?180min) in order to investigate the influence of annealing time on the silver-doped SnS (SnS:Ag)?films. The obtained films annealed at different times are polycrystalline SnS with orthogonal?structure, and the crystallites in the films are exclusively oriented along the {111} direction. With the
increase of annealing time, the uniformity and crystallization of the films are improved, the carrier?concentration and mobility of the films first rise and then drop, whereas their resistivity and direct?bandgap energy Eg show the contrary trend.