Temperature-dependent charge barrier height of amorphous germanium contact detector
Temperature-dependent charge barrier height of amorphous germanium contact detector
复制标题
非晶锗接触探测器随温度变化的电荷势垒高度
DOI:
10.1016/j.nima.2022.166862
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Wang, Guojian
中科院分区:
文献类型:
--
作者:
Panth, Rajendra;Wei, Wenzhao;Mei, Dongming;Liu, Jing;Bhattarai, Sanjay;Mei, Hao;Raut, Mathbar;Acharya, Pramod;Kooi, Kyler;Wang, Guojian
The exploration of germanium (Ge) detectors with amorphous Ge (a-Ge) contacts has drawn attention to the searches for rare-event physics such as dark matter and neutrinoless double-beta decay. The charge barrier height (CBH) of the a-Ge contacts deposited on the detector surface is crucial to suppress the leakage current of the detector in order to achieve a low-energy detection threshold and high-energy resolution. The temperature-dependent CBH of a-Ge contacts for three Ge detectors is analyzed to study the bulk leakage current (BLC) characteristics. The detectors were fabricated at the University of South Dakota using homegrown crystals. The CBH is determined from the BLC when the detectors are operated in the reverse bias mode with a guard-ring structure, which separates the BLC from the surface leakage current (SLC). The results show that CBH is temperature dependent. The direct relation of the CBH variation to temperature is related to the barrier inhomogeneities created on the interface of a-Ge and crystalline Ge. The inhomogeneities that occur at the interface were analyzed using the Gaussian distribution model for three detectors.
登录
查看更多内容
影响因子:
4.1
作者:
Guojian Wang;M. Amman;H. Mei;D. Mei;K. Irmscher;Y. Guan;Gang Yang
通讯作者:
Gang Yang
DOI:
10.1109/nssmic.1999.842475
发表时间:
1999
期刊:
1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019)
影响因子:
--
作者:
P. Luke;M. Amman;B. Phlips;W. N. Johnson;R. A. Koreger
通讯作者:
R. A. Koreger
DOI:
10.1088/1361-6471/ab9796
发表时间:
2019-09
期刊:
arXiv: Instrumentation and Detectors
影响因子:
--
作者:
D. Mei;Mukund Bharadwaj;W.-Z. Wei;R. Panth;Jing Liu;H. Mei;Yangyang Li;P. Acharya;S. Bhattarai;K. Kooi;M. Raut;Xiansong Sun;Alex Kirkvold;Kunming Dong;Xianghua Meng;Guojian Wang;Gang Yang
通讯作者:
D. Mei;Mukund Bharadwaj;W.-Z. Wei;R. Panth;Jing Liu;H. Mei;Yangyang Li;P. Acharya;S. Bhattarai;K. Kooi;M. Raut;Xiansong Sun;Alex Kirkvold;Kunming Dong;Xianghua Meng;Guojian Wang;Gang Yang
DOI:
--
发表时间:
1972
期刊:
Journal of Physics E Scientific Instruments
影响因子:
--
作者:
A. Muggleton
通讯作者:
A. Muggleton
DOI:
10.1088/1742-6596/1342/1/012005
发表时间:
2017
期刊:
Journal of Physics: Conference Series
影响因子:
--
作者:
Guojian Wang;H. Mei;D. Mei;Y. Guan;Gang Yang
通讯作者:
Gang Yang