Abstract
The imperfect quality of CdZnTe (CZT) crystals for radiation detectors seriously diminishes their suitability for different applications. Dislocations and other dislocation-related defects, such as sub-grain boundaries and dislocation fields around Te inclusions, engender significant charge losses and, consequently, cause fluctuations in the detector's output signals, thereby hindering their spectroscopic responses. In this paper, we discuss our results from characterizing CZT material by using a high-spatial-resolution X-ray response mapping system at BNL's National Synchrotron Light Source. In this paper, we emphasize the roles of these dislocation-related defects and their contributions in degrading the detector's performance. Specifically, we compare the effects of the sub-grain- and coherent twin-boundaries on the X-ray response maps.
| Original language | English |
|---|---|
| Title of host publication | Nuclear Radiation Detection Materials - 2011 |
| Pages | 61-65 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2012 Feb 20 |
| Externally published | Yes |
| Event | 2011 MRS Spring Meeting - San Francisco, CA, United States Duration: 2011 Apr 25 → 2011 Apr 29 |
Publication series
| Name | Materials Research Society Symposium Proceedings |
|---|---|
| Volume | 1341 |
| ISSN (Print) | 0272-9172 |
Conference
| Conference | 2011 MRS Spring Meeting |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 11/4/25 → 11/4/29 |
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Keywords
- CdZnTe
- Crystal defects
- Dislocations
- Radiation detectors
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Effects of dislocations and sub-grain boundaries on X-ray response maps of CdZnTe radiation detectors. / Hossain, A.; Bolotnikov, A. E.; Camarda, G. S.; Cui, Y.; Gul, R.; Kim, Kihyun; Raghothamachar, B.; Yang, G.; James, R. B.
Nuclear Radiation Detection Materials - 2011. 2012. p. 61-65 (Materials Research Society Symposium Proceedings; Vol. 1341).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effects of dislocations and sub-grain boundaries on X-ray response maps of CdZnTe radiation detectors
AU - Hossain, A.
AU - Bolotnikov, A. E.
AU - Camarda, G. S.
AU - Cui, Y.
AU - Gul, R.
AU - Kim, Kihyun
AU - Raghothamachar, B.
AU - Yang, G.
AU - James, R. B.
PY - 2012/2/20
Y1 - 2012/2/20
N2 - The imperfect quality of CdZnTe (CZT) crystals for radiation detectors seriously diminishes their suitability for different applications. Dislocations and other dislocation-related defects, such as sub-grain boundaries and dislocation fields around Te inclusions, engender significant charge losses and, consequently, cause fluctuations in the detector's output signals, thereby hindering their spectroscopic responses. In this paper, we discuss our results from characterizing CZT material by using a high-spatial-resolution X-ray response mapping system at BNL's National Synchrotron Light Source. In this paper, we emphasize the roles of these dislocation-related defects and their contributions in degrading the detector's performance. Specifically, we compare the effects of the sub-grain- and coherent twin-boundaries on the X-ray response maps.
AB - The imperfect quality of CdZnTe (CZT) crystals for radiation detectors seriously diminishes their suitability for different applications. Dislocations and other dislocation-related defects, such as sub-grain boundaries and dislocation fields around Te inclusions, engender significant charge losses and, consequently, cause fluctuations in the detector's output signals, thereby hindering their spectroscopic responses. In this paper, we discuss our results from characterizing CZT material by using a high-spatial-resolution X-ray response mapping system at BNL's National Synchrotron Light Source. In this paper, we emphasize the roles of these dislocation-related defects and their contributions in degrading the detector's performance. Specifically, we compare the effects of the sub-grain- and coherent twin-boundaries on the X-ray response maps.
KW - CdZnTe
KW - Crystal defects
KW - Dislocations
KW - Radiation detectors
UR - http://www.scopus.com/inward/record.url?scp=84863163049&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863163049&partnerID=8YFLogxK
U2 - 10.1557/opl.2011.1274
DO - 10.1557/opl.2011.1274
M3 - Conference contribution
AN - SCOPUS:84863163049
SN - 9781605113180
T3 - Materials Research Society Symposium Proceedings
SP - 61
EP - 65
BT - Nuclear Radiation Detection Materials - 2011
ER -