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- W2002804978 abstract "Al<SUB>x</SUB>Ga<SUB>1-x</SUB> ultraviolet photoconductors with cut- off wavelengths from 365 nm to 200 nm have been fabricated and characterized. Various characteristics of the devices, such as photoresponse, voltage-dependent responsivity, frequency-dependent responsivity and noise spectral density, were measured and cross-referenced with optical, electrical and structural characteristics of the material to provide information about the mechanisms taking place during detection. The maximum detectivity reached 5.5 X 10<SUP>8</SUP> cm X Hz<SUP>1/2</SUP>/W at a modulating frequency of 14 Hz. The effective majority carrier lifetime in Al<SUB>x</SUB>Ga<SUB>1-x</SUB>N materials, derived from frequency-dependent photoconductivity measurements, has been estimated to be from 6 to 35 msec. The frequency-dependent noise-spectrum shows that it is dominated by Johnson-noise at high frequencies for low Al-composition samples." @default.
- W2002804978 created "2016-06-24" @default.
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- W2002804978 date "1997-04-15" @default.
- W2002804978 modified "2023-10-16" @default.
- W2002804978 title "<title>Intrinsic Al<formula><inf><roman>x</roman></inf></formula>Ga<formula><inf><roman>1-x</roman></inf></formula>N photodetectors for the entire compositional range</title>" @default.
- W2002804978 doi "https://doi.org/10.1117/12.271200" @default.
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