Journal
APPLIED PHYSICS LETTERS
Volume 81, Issue 10, Pages 1902-1904Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1504492
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Metal-semiconductor-metal ultraviolet (UV) detectors with finger width and pitch ranging from 0.5 to 4 mum have been fabricated on GaN. A superlinear enhancement of responsivity is observed when scaling down, in agreement with a model that includes optical absorption and the variation of the space-charge regions with bias. No degradation is found in terms of UV/visible contrast or photocurrent linearity. (C) 2002 American Institute of Physics.
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