Peer-Reviewed Journal Details
Mandatory Fields
Authors
Jackson, JC,Hurley, PK,Lane, B,Mathewson, A,Morrison, AP;
Year
2002
Month
February
Journal
Applied Physics Letters
Title
Comparing leakage currents and dark count rates in Geiger-mode avalanche photodiodes
Status
Validated
Times Cited
()
Optional Fields
Keywords
ACCURATE EXTRACTION JUNCTION
Volume
80
Issue
Start Page
4100
End Page
4102
Abstract
This letter presents an experimental study of dark count rates and leakage current in Geiger-mode avalanche photodiodes (GM APD). Experimental results from circular diodes over a range of areas (20-500 mum diam), exhibit leakage current levels orders of magnitude higher than anticipated from dark count rates. Measurements of the area and peripheral components of the leakage current indicate that the majority of the current in reverse bias does not enter the high-field region of the diode, and therefore, does not contribute to the dark count rate. Extraction of the area leakage current term from large-area devices (500 mum) corresponds well with the measured dark count rates on smaller devices (20 mum). Finally, the work indicates how dark count measurements represent 10(-18) A levels of leakage current detection in GM APDs. (C) 2002 American Institute of Physics.
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ISBN / ISSN
Edition
URL
DOI Link
DOI 10.1063/1.1483119
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