The infrared photodetecting properties of new vitreous Bi–Se films are described. Such films are prepared by coevaporation and vapor quenching. A room-temperature D* value of 2×1011 cm/W·sec1/2 was measured at the peak sensitivity wavelength (∼1 μ) for an optimum composition film. Response times range between 0.3 and 3 msec. In addition, measurements were made of D* as a function of sample composition, incident photon flux, and temperature.
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Bowman et al. (1968) studied this question.
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