AlGaAs diodes for X-ray spectroscopy.
journal contribution
posted on 2008-11-27, 12:34 authored by J. E. Lees, D. J. Bassford, J. S. Ng, C. H. Tan, J. P. R. DavidAl0.8Ga0.2As p+-p--n+ diodes with low reverse leakage currents (<10nA) were
evaluated as room temperature (23ºC), soft X-ray photon counting detectors. X-ray spectra from a 55Fe radioactive source show these diodes can be used for spectroscopy with promising energy resolution of 1.47 keV FWHM at 5.9 keV. At elevated reverse bias levels (>20V) we observed avalanche multiplication which, while improving the signal-to-noise ratio, degraded the spectroscopic performance.
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Citation
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008, 594 (2), pp. 202-205.Published in
Nuclear Instruments and Methods in Physics Research Section A: AcceleratorsPublisher
Elsevier B.V.issn
0168-9002Copyright date
2008Available date
2008-11-27Publisher DOI
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http://www.sciencedirect.com/science/article/pii/S0168900208008644Language
enAdministrator link
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