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Deep UV photodetectors fabricated from CVD single crystal diamond

Bevilacqua, M; Jackman, RB; (2010) Deep UV photodetectors fabricated from CVD single crystal diamond. In: Materials Research Society Symposium Proceedings. (pp. 223 - 231).

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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 100A/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. © 2010 Materials Research Society.

Type:Proceedings paper
Title:Deep UV photodetectors fabricated from CVD single crystal diamond
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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