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Charge carrier properties of single-crystal CVD diamond up to 473 K
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ( IF 1.5 ) Pub Date : 2020-12-14 , DOI: 10.1016/j.nima.2020.164947
Benjamin Kraus , Patrick Steinegger , Nikolay V. Aksenov , Rugard Dressler , Robert Eichler , Erich Griesmayer , Dominik Herrmann , Andreas Türler , Christina Weiss

The drift behavior of charge carriers, generated by α-particles of a reference 241Am-source, in electronic grade, single crystal chemical vapor deposition (scCVD) diamond was investigated by the transient current technique (TCT) from room temperature up to 473K. Furthermore, the α-spectroscopic behavior was analyzed in terms of charge collection and spectroscopic resolution for the same temperature range. All conducted measurements revealed complete charge collection up to the maximum temperature. The electron–hole-pair creation energies were derived from the TCT as well as from the spectroscopic measurements. The herein presented results imply that high temperature α-spectroscopy with diamond-based semiconductor solid state detectors, using presently available scCVD sensor substrates, is feasible at least up to 473K. Only at the highest applied temperature, the conducted TCT measurements showed distorted signal traces, indicating a uniform positive space charge built-up.



中文翻译:

高达473 K的单晶CVD金刚石的载流子特性

电荷载流子的漂移行为,由 αα粒子的基准的241 AM-源,电子级,单晶的化学汽相沉积(scCVD)金刚石是由瞬态电流技术(TCT)从室温到调查473ķ。此外,α在相同温度范围内,根据电荷收集和光谱分辨率分析了光谱行为。所有进行的测量均显示了直至最高温度的完整电荷收集。电子-空穴对产生的能量来自TCT以及光谱测量。本文给出的结果暗示高温α使用目前可用的scCVD传感器基板,使用基于金刚石的半导体固态检测器进行光谱分析是可行的,至少在 473ķ。仅在最高施加温度下,进行的TCT测量显示出失真的信号轨迹,表明形成了均匀的正空间电荷。

更新日期:2020-12-24
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