Temperature dependence of Al0.2Ga0.8As X-ray photodiodes for X-ray spectroscopy
Temperature dependence of Al0.2Ga0.8As X-ray photodiodes for X-ray spectroscopy
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X 射线光谱学中 Al0.2Ga0.8As X 射线光电二极管的温度依赖性
DOI:
10.1063/1.4993914
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发表时间:
2017
影响因子:
3.2
通讯作者:
A. M. Barnett
中科院分区:
文献类型:
--
作者:
M. Whitaker;S. Butera;G. Lioliou;A. M. Barnett
Two custom-made Al0.2Ga0.8As p+-i-n+ mesa X-ray photodiodes (200 μm diameter, 3 μm i layer) have been electrically characterised across the temperature range −20 °C to 60 °C. The devices were connected to a custom-made charge sensitive preamplifier to produce an AlGaAs photon-counting X-ray spectrometer. The devices' responses to illumination with soft X-rays from an 55Fe radioisotope X-ray source (Mn Kα = 5.9 keV; Mn Kβ = 6.49 keV) were investigated across the temperature range −20 °C to 20 °C. The best energy resolution (FWHM at 5.9 keV) achieved at 20 °C was 1.06 keV (with the detector at 10 V reverse bias). Improved FWHM was observed with the devices at temperatures of 0 °C (0.86 keV) and −20 °C (0.83 keV) with the photodiode reverse biased at 30 V. The average electron hole pair creation energy was experimentally measured and determined to be 4.43 eV ± 0.09 eV at 20 °C, 4.44 eV ± 0.10 eV at 0 °C, and 4.56 eV ± 0.10 eV at −20 °C.
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影响因子:
3.2
作者:
S. Butera;G. Lioliou;A. Krysa;A. M. Barnett
通讯作者:
S. Butera;G. Lioliou;A. Krysa;A. M. Barnett
DOI:
10.1016/j.nima.2011.06.101
发表时间:
2011-10-21
影响因子:
1.4
作者:
Barnett, A. M.;Lees, J. E.;Gomes, R. B.
通讯作者:
Gomes, R. B.
DOI:
10.1016/j.nima.2016.08.047
发表时间:
2016
期刊:
Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
作者:
Lioliou G
通讯作者:
Lioliou G
影响因子:
3.2
作者:
Lioliou, G.;Meng, X.;Barnett, A. M.
通讯作者:
Barnett, A. M.