Dependence of on the photon energy for , as a function of substrate temperature , for a fixed photons number. , , and are the photocurrent , the electronic charge and photon number , respectively. The photon number is equal to the product of the photon flux with the area of film irradiated by the monochromatic light.
Dependence of the defect density (obtained from ESR) and the corresponding nitrogen concentration (determined from EELS) for films, as a function of substrate temperature .
Dependence of the fraction and density of valence electrons for films, as a function of substrate temperature , obtained by electron-energy-loss spectroscopy.
Dependence of the optical energy gap and Urbach energy , obtained from photothermal deflection spectroscopy, for films as a function of substrate temperature .
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