LAAPD low temperature performance in X-ray and visible-light detection

The performance of a large area avalanche photodiode (LAAPD) has been investigated for x-ray and visible light detection as a function of temperature. Energy resolution was found to improve significantly with decreasing temperature down to 0/spl deg/C and at a much slower rate below that value, achi...

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Bibliographic Details
Main Authors: Fernandes, L.M.P., Lopes, J.A.M., dos Santos, J.M.F., Knowles, P.E., Ludhova, L., Mulhauser, F., Kottmann, F., Pohl, R., Taqqu, D.
Format: Conference Proceeding
Language:English
Subjects:
Avalanche photodiodes
Charge carrier processes
Dark current
Electromagnetic coupling
Energy resolution
P-n junctions
Physics
Temperature
X-ray detection
X-ray detectors
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Summary:The performance of a large area avalanche photodiode (LAAPD) has been investigated for x-ray and visible light detection as a function of temperature. Energy resolution was found to improve significantly with decreasing temperature down to 0/spl deg/C and at a much slower rate below that value, achieving 9.2% for 5.9 keV X-rays at -40/spl deg/C and a gain of 70. Gain drift of -4.2% per /spl deg/C at 1700 V bias was obtained for 5.9 keV X-rays and similar values were obtained for visible-light.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2003.1351813