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Comparison of the x-ray spectroscopy response and charge transport properties of semi-insulating In/Al doped CdZnTe crystals
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10.1063/1.3097301
/content/aip/journal/jap/105/8/10.1063/1.3097301
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/8/10.1063/1.3097301

Figures

Image of FIG. 1.
FIG. 1.

Comparison of the x-ray response of (a) CZT1, (b) CZT2, and (c) CZT3, respectively, irradiated by an uncollimated Tb x-ray source with and peak energies of 44.2 and 50.7 keV at various bias voltages. The centriod and FWHM values of the peaks are plotted for each of the detectors in (d)–(f), respectively.

Image of FIG. 2.
FIG. 2.

Comparison of the electron mobility lifetime products fitted using the single carrier Hecht equation (Ref. 7). The are , , and for CZT1, CZT2, and CZT3, respectively.

Image of FIG. 3.
FIG. 3.

Temporal measurements at room temperature under an applied electric field strength of 600 V/cm for CZT1, CZT2, and CZT3. The region between the dashed lines is selected for the rise time calculation. Measurements at 300 V/cm and above 1000 V/cm showed similar properties.

Image of FIG. 4.
FIG. 4.

Typical curves of the Au/CdZnTe/Au detectors made of CZT1 (solid line), CZT2 (dotted line), and CZT3 (dashed line).

Image of FIG. 5.
FIG. 5.

Temperature dependent -particle spectra for (a) CZT1, (b) CZT2, and (c) CZT3 measured at different applied electric field strengths.

Image of FIG. 6.
FIG. 6.

Induced alpha pulse shapes at various applied electric field strengths at decreasing temperatures for (a) CZT1, (b) CZT2, and (c) CZT3. The plots are offset on the ordinate for clarity.

Image of FIG. 7.
FIG. 7.

Arrhenius plot of as a function of for CZT1. The solid line is the result of fitting Eq. (2). The inset is a histogram of the detrapping time distribution at 260 K.

Tables

Generic image for table
Table I.

Properties of the doped CdZnTe detectors. and were measured at room temperature.

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/content/aip/journal/jap/105/8/10.1063/1.3097301
2009-04-16
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Comparison of the x-ray spectroscopy response and charge transport properties of semi-insulating In/Al doped CdZnTe crystals
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/8/10.1063/1.3097301
10.1063/1.3097301
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