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        Extreme sensitivity displayed by single-crystal diamond deep ultra-violet photoconductive devices

        Author
        Bevilacqua, Mose
        Jackman, Richard B.
        Attention
        2299/11629
        Abstract
        Deep UV detection using a single crystal diamond (SCD) substrate without a homoepitaxial layer has been demonstrated using a defect passivation treatment. Despite evidence of surface damage on the SCD, the treatments lead to highly effective photoconductive devices, displaying six-orders of discrimination between deep UV and visible light and a responsivity as high as 100 A/W, equivalent to an external quantum efficiency of 700, similar to the best values for devices based on high quality homoepitaxial layers. Impedance spectroscopic investigations suggest that the treatment used reduces the impact of less resistive surface material, most likely defects left from substrate polishing
        Publication date
        2009
        Published in
        Applied Physics Letters
        Published version
        https://doi.org/10.1063/1.3273378
        Other links
        http://hdl.handle.net/2299/11629
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