| 摘要 |
A semiconductor photo-detector is disclosed. The inventive photo-detector is especially sensitive to light in the ultraviolet and/or blue portions of the spectrum. The semiconductor body comprising the detector is arranged with a band structure which, through use of a potential threshold, delimits a particular region of the semiconductor body. Illustratively, the particular delimited region is coincident with the region where ultraviolet and/or blue light is absorbed. Charge carriers generated in the delimited region through the absorption of ultraviolet and/or blue light contribute to the output signal. Other wavelengths of light are absorbed in the semiconductor body outside the delimited region. The charged particles generated by the absorption of light outside the delimited region do not contribute to the output signal.
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