Skip to main content Accessibility help
×
Home

Gamma Ray Detection with Cd0.9Zn0.1Te Based Detectors Grown Using a Te Solvent Method

Published online by Cambridge University Press:  15 November 2013

Sandeep K. Chaudhuri
Affiliation:
Department of Electrical Engineering, 301 Main Street, University of South Carolina, Columbia, SC 29208, U.S.A.
Kelvin J. Zavalla
Affiliation:
Department of Electrical Engineering, 301 Main Street, University of South Carolina, Columbia, SC 29208, U.S.A.
Ramesh M. Krishna
Affiliation:
Department of Electrical Engineering, 301 Main Street, University of South Carolina, Columbia, SC 29208, U.S.A.
Krishna C. Mandal
Affiliation:
Department of Electrical Engineering, 301 Main Street, University of South Carolina, Columbia, SC 29208, U.S.A.
Corresponding
E-mail address:
Get access

Abstract

Cd0.9Zn0.1Te (CZT) single crystal has been grown using a tellurium solvent method. Two CZT crystals have been chosen from two different locations of the grown ingot. The two crystals were characterized using infrared transmission (IR) imaging and radiation detectors in planar geometry were fabricated on them. Current-voltage characteristics (I-V) revealed a resistivity of ∼8.6×1010 Ω−cm for detector A (6.9×6.9×4.8 mm3) and 6.7×1010 Ω−cm for detector B (11.5×11.7×2.6 mm3). IR imaging showed a lesser concentration of Te inclusions/precipitates in detector A. The transport properties viz., electron drift-mobility and electron mobility-lifetime product were measured using alpha spectroscopy in these detectors in a planar configuration. Detector A showed better charge transport properties compared to detector B. The superior transport properties of crystal A were reflected in the spectroscopic properties of the detectors. Gamma pulse height measurements using a 241Am isotope revealed an energy resolution of ∼5 % for detector A and ∼7 % for detector B. A digital spectrometer and a biparametric correction scheme was incorporated to recover the pulse height spectrum of high energy gamma rays (137Cs source) from the effect of poor hole movement.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below.

References

Schlesinger, T. E., Toney, J. E., Yoon, H., Lee, E. Y., Brunett, B. A., Franks, L., and James, R. B., “Cadmium zinc telluride and its use as a nuclear radiation detector material,” Mater. Sci. and Eng. R, vol. 32, pp. 103189, 2001.CrossRefGoogle Scholar
Bolotnikov, A. E., Butcher, J., Camarda, G. S., Cui, Y., De Geronimo, G., Fried, J., Gul, R., Fochuk, P.M., Hamade, M., Hossain, A., Kim, K. H., Kopach, O. V., Petryk, M., Vernon, E., Yang, G., and James, R. B., “Array of virtual Frisch-grid CZT detectors with common cathode readout for correcting charge signals and rejection of incomplete charge-collection events,” IEEE Trans. Nucl. Sci. vol. 59, no. 6, pp. 15441551, 2012.CrossRefGoogle Scholar
Mandal, K. C., Kang, S. H., Choi, M., Bello, J., Zheng, L., Zhang, H., Groza, M., Roy, U. N., Burger, A., Holcomb, D. E., Wright, G. W., and Williams, J. A., “Simulation, modeling, and crystal growth of Cd0.9Zn0.1Te for nuclear spectrometers,” J. Electron. Mater. vol. 35, no. 6, pp. 12511256, 2006.CrossRefGoogle Scholar
Krishna, R. M., Hayes, T. C., Muzykov, P. G., and Mandal, K. C., “Low temperature crystal growth and characterization of Cd0.9Zn0.1Te for radiation detection applications,” Mater. Res. Soc. Symp. Proc., vol. 1341, pp. 3944, 2011.CrossRefGoogle Scholar
Krishna, R. M., Chaudhuri, S. K., Zavalla, K. J., and Mandal, K. C., “Characterization of Cd0.9Zn0.1Te based virtual Frisch grid detectors for high energy gamma ray detection,” Nucl. Instrum. Meth. Phys. Res. A, vol. 701, pp. 208213, 2013.CrossRefGoogle Scholar
Knoll, G. F., Radiation detection and measurement, 3rd ed., John Wiley and Sons, Inc.:New York, 2000, p. 480.Google Scholar
Chaudhuri, S. K., Lohstroh, A., Nakhostin, M., Sellin, P.J., “Digital pulse height correction in HgI2 γ-ray detectors,” J. Instrumentation, vol. 7, pp. T04002-1-13, 2012.CrossRefGoogle Scholar
Carini, G. A., Bolotnikov, A. E., Camarda, G. S., Wright, G. W., James, R. B., and Li, L., “Effect of Te precipitates on the performance of CdZnTe detectors,” Appl. Phys. Lett., vol. 88, no. 14 pp. 143515143517, 2006.CrossRefGoogle Scholar
Bolotnikov, A. E., Camarda, G. S., Carini, G. A., Cui, Y., Li, L., and James, R. B., “Cumulative effects of Te precipitates in CdZnTe radiation detectors,” Nucl. Instrum. Meth. A, vol. 571, no. 3, pp. 687698, 2007.CrossRefGoogle Scholar
Crocco, J., Bensalah, H., Zheng, Q., Corregidor, V., Avles, E., Castaldini, A., Fraboni, B., Cavalcoli, D., Cavallini, A., Vela, O., and Dieguez, E., “Study of asymmetries of Cd(Zn)Te devices investigated using photo-induced current transient spectroscopy, Rutherford backscattering, surface photo-voltage spectroscopy, and gamma ray spectroscopies,” J. Appl. Phys., vol. 112, no. 7, pp. 074503–1-9, 2012.CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 9 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 15th January 2021. This data will be updated every 24 hours.

Hostname: page-component-77fc7d77f9-xz9qf Total loading time: 0.235 Render date: 2021-01-15T21:47:29.562Z Query parameters: { "hasAccess": "0", "openAccess": "0", "isLogged": "0", "lang": "en" } Feature Flags last update: Fri Jan 15 2021 20:51:23 GMT+0000 (Coordinated Universal Time) Feature Flags: { "metrics": true, "metricsAbstractViews": false, "peerReview": true, "crossMark": true, "comments": true, "relatedCommentaries": true, "subject": true, "clr": true, "languageSwitch": true, "figures": false, "newCiteModal": false, "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true }

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Gamma Ray Detection with Cd0.9Zn0.1Te Based Detectors Grown Using a Te Solvent Method
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Gamma Ray Detection with Cd0.9Zn0.1Te Based Detectors Grown Using a Te Solvent Method
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Gamma Ray Detection with Cd0.9Zn0.1Te Based Detectors Grown Using a Te Solvent Method
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *