AlGaAs diodes for X-ray spectroscopy
AlGaAs diodes for X-ray spectroscopy
复制标题
用于 X 射线光谱分析的 AlGaAs 二极管
DOI:
10.1016/j.nima.2008.06.038
复制
发表时间:
2008
影响因子:
1.4
通讯作者:
J. David
中科院分区:
文献类型:
--
作者:
J. Lees;D. Bassford;J. Ng;C. Tan;J. David
Al0.8Ga0.2As p+–p−–n+diodes with low reverse leakage currents (<10nA) were evaluated as room temperature (23°C), soft X-ray photon-counting detectors. X-ray spectra from a55Fe radioactive source show these diodes can be used for spectroscopy with promising energy resolution of 1.47keV FWHM at 5.9keV. At elevated reverse bias levels (>20V), we observed avalanche multiplication which, while improving the signal-to-noise ratio, degraded the spectroscopic performance.