photoexcitation 中文意思是什麼

photoexcitation 解釋
光激發
  1. Because of the anatase ' s broad eg ( 3. 2ev ), the absorption thresholds correspond to 380nm for the tio2. consequently, only the ultraviolet fraction of the solar irradiation can be active in the photoexcitation processes using pure tio2 solid. the high recombination rate of charge carrier and low efficiency of quantization are also the deficiencies of pure tio2

    由於tio _ 2的帶隙較寬(約3 . 2ev ) ,半導體的光吸收波長范圍窄(主要在紫外區) ,故其太陽能的利用效率低,且還存在半導體載流子的復合率高,量子化效率低等缺陷。
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