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Photo-induced transmittance in copper-selenide nanowires

机译:硒化铜纳米线的光致透射率

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摘要

Photo-induced transmission was investigated in Cu_(1.7)Se nanowires electrochemically deposited in alumina matrix pores with a central channel of the diameters of 12, 15 and 60 nm by means of the degenerate picosecond pump-probe technique at 1.064 μm wavelength. Resonant excitation intensity dependencies were interpreted. Absorption saturation was ascertained as a result of the drain of acceptor shallow centers. The estimated absorption cross-section was 10~(-12) cm~2, saturation intensity - was 1-10 mJ cm~(-2).
机译:利用简并的皮秒泵浦探针技术,在1.064μm波长下,以电化学方式沉积在直径为12、15和60 nm中央通道的氧化铝基质孔中的Cu_(1.7)Se纳米线中,研究了光诱导的透射。解释了共振激发强度依赖性。由于受体浅中心的排出,确定了吸收饱和。估计的吸收截面为10〜(-12)cm〜2,饱和强度为1〜10 mJ cm〜(-2)。

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