Compensation and trapping in CdZnTe radiation detectors studied by thermoelectric emission spectroscopy, thermally stimulated conductivity, and current-voltage measurements

Journal of Electronic Materials

Volumn 28, Issue 6, 1999, Pages 766-773

  Lee, E Y ^a   James, R B ^a   Olsen, R W ^a   Hermon, H ^b  

^a SANDIA NATIONAL LABORATORIES   (United States)

^b HEBREW UNIVERSITY OF JERUSALEM   (Israel)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRIC CURRENT MEASUREMENT; ELECTRON TRAPS; HOLE TRAPS; IONIZATION; OHMIC CONTACTS; RADIATION DETECTORS; SPECTROSCOPIC ANALYSIS; THERMAL CONDUCTIVITY OF SOLIDS; THERMOELECTRICITY; VOLTAGE MEASUREMENT;

CADMIUM ZINC TELLURIDE; THERMALLY STIMULATED CONDUCTIVITY (TSC); THERMOELECTRIC EMISSION SPECTROSCOPY (TEES);

SEMICONDUCTING CADMIUM TELLURIDE;

EID: 0032643167     PISSN: 03615235     EISSN: None     Source Type: Journal    
DOI: 10.1007/s11664-999-0068-0     Document Type: Article

References (16)

1. For a recent review, see Semiconductors for Room-Temperature Radiation Detector Applications II, Vol. 487, ed. R.B. James, T.E. Schlesinger, P. Siffert, W. Dusi, M.R. Squillante, M. O'Connell and M. Cuzin (Warrendale, PA: Materials Research Society, 1998).
2. For some radiation detector designs called unipolar designs, the transport properties of only one type of carriers are important. For CdZnTe, the preferred carrier is the electron, because of its larger mobility and longer lifetime.
3. R. Zucca, J. Appl. Phys. 48, 1987 (1977).
4. C. Szeles and E.E. Eissler, Semiconductors for Room-Temperature Radiation Detector Applications II, Vol. 487, ed. R.B. James, T.E. Schlesinger, P. Siffert, W. Dusi, M.R. Squillante, M. O'Connell and M. Cuzin (Warrendale: PA: Materials Research Society, 1998), p. 1.
5. B. Santic and U.V. Desnica, Appl. Phys. Lett. 56, 2636(1990).
6. R.H. Bube, J. Chem. Phys. 23, 18 (1955).
7. Counter-select grade crystal is defined by the supplier to be a radiation detector that, when detecting gamma-ray under optimized setting at 25°C, gives a pulse height spectrum with (1) peak-to-valley ratio greater than 3 and FWHM less than 15 keV at 59.5 keV and (1) peak-to-valley ratio greater than 1.6 at 122 keV.
8. E.Y. Lee and R.B. James (to be published).
9. I.K. Andronik and F.M. Lukiyan, Sov. Phys. Semicond. 14, 958 (1980).
10. E.Y. Lee (to be published).
11. See for example H.J. Goldsmid, Thermoelectric Refrigeration, (New York, Plenum Press, 1964), p. 37.
12. Presumably, the Au contacts were made using gold chloride solutions, but we are not able to confirm this with the supplier.
13. R.H. Bube, Photoconductivity in Solids, (New York, Wiley, 1960), p. 293.
14. M. Berding, J. Electron. Mater. 28, 799 (1999).
15. C. Hackett, J. Electron. Mater. 28, 774 (1999).
16. E.Y. Lee, B.A. Brunett, R.W. Olsen, J.M. Van Scyoc III, H. Hermon, R.B. James, Hard X-Ray and Gamma-Ray Detector Physics and Applications, 3446,(SPIE, 1998), p. 40.