Repurposing a low-cost commercial Si photodiode as a detector for X-ray and ? -ray spectroscopy at temperatures up to 80 °C
Repurposing a low-cost commercial Si photodiode as a detector for X-ray and ? -ray spectroscopy at temperatures up to 80 °C
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将低成本商用硅光电二极管重新用作 X 射线和 ? 探测器
DOI：
10.1016/j.nima.2021.165543
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Lioliou G
中科院分区：
文献类型：
--
作者：
Lioliou G
设计用于可见光和红外探测的商用现成（COTS）Si p+-in+光电二极管（Hamamatsu S5973）被重新利用，用作光子计数X射线和γ射线光谱的低成本且容易获得的探测器。该探测器的光谱性能进行了研究，同时被耦合到一个定制的电荷敏感的电子束，在光子的照射下，能量高达59.54千电子伏。使检测器-蒸发器系统经受80° C至20° C的温度。在20° C下实现了在5.9 keV下0.66 keV±0.05 keV、在22.16 keV下0.70 keV±0.04 keV和在59.54 keV下0.74 keV±0.06 keV的能量分辨率（半峰全宽，FWHM）。能量分辨率在80° C下恶化，在59.54 keV下达到1.8 keV±0.1 keV FWHM的值。结果表明，目前报道的COTS Si探测器在能量分辨率方面的性能优于某些特定目的生长的宽带隙探测器在20° C和40° C下实现的性能，也优于其他重新利用的Si探测器在20° C下实现的性能。为Hamamatsu S5973探测器的应用开辟了新的可能性，并增加了低成本X射线和γ射线光谱仪器的可用性。
A commercial-off-the-shelf (COTS) Si p+-in+ photodiode (Hamamatsu S5973), designed for visible and infrared detection, was repurposed for use as a low-cost and readily available detector for photon counting X-ray and γ-ray spectroscopy. The detector was investigated for its spectroscopic performance, while being coupled to a custom-made charge sensitive preamplifier, under the illumination of photons with energies up to 59.54 keV. The detector-preamplifier system was subjected to temperatures from 80° C to 20° C. Energy resolutions (Full Width at Half Maximum, FWHM) of 0.66 keV±0.05 keV at 5.9 keV, 0.70 keV±0.04 keV at 22.16 keV, and 0.74 keV±0.06 keV at 59.54 keV, were achieved at 20° C. The energy resolution deteriorated at 80° C, reaching a value of 1.8 keV±0.1 keV FWHM at 59.54 keV. The results suggested that the performance, in terms of energy resolution, of the currently reported COTS Si detector was better than that achieved with certain purpose-grown wide bandgap detectors at 20° C and 40° C and better than that achieved with other repurposed Si detectors at 20° C, opening new possibilities for applications for the Hamamatsu S5973 detectors and increasing the availability of low cost X-ray and γ-ray spectroscopy instrumentation.