Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement

Abstract

In this present work we report the growth of Cd0.9Zn0.1Te doped with In by a modified THM technique. It has been demonstrated that by controlling the microscopically flat growth interface, the size distribution and concentration of Te inclusions can be drastically reduced in the as-grown ingots. This results in as-grown detector-grade CZT by the THM technique. The three-dimensional size distribution and concentrations of Te inclusions/precipitations were studied. The size distributions of the Te precipitations/inclusions were observed to be below the 10-µm range with the total concentration less than 105 cm−3. The relatively low value of Te inclusions/precipitations results in excellent charge transport properties of our as-grown samples. The (ux)e values for different as-grown samples varied between 6–20 ×10−3 cm2/V. The as-grown samples also showed fairly good detector response with resolution of ~1.5%, 2.7% and about 3.8% at 662 keV for quasi-hemispherical geometry for detector volumes of 0.18 cm3, 1 cm3 and 4.2 cm3, respectively.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    H. Chen, S. A. Awadalla, K. Iniewski, P. H. Lu, F. Harris, J. Mackenzie, T. Hasanen, W. Chen, R. Redden, G. Bindley, Irfan Kuvvetli, Carl Budtz Jørgensen, P. Luke, M. Amman, J. S. Lee, A. E. Bolotnikov, G. S. Camarda, Y. Cui, A. Hossain and R. B. James, J. Appl. Phys. 103, 014903 (2008).

    Article  Google Scholar 

  2. 2.

    S. A. Awadalla, H. Chen, J. Mackenzie, P. Lu, K. Iniewski, P. Marthandam, R. Redden, G. Bindley, Z. He and F. Zhang, J. Appl. Phys. 105, 114910 (2009).

    Article  Google Scholar 

  3. 3.

    A. El Mokri, R. Triboulet, A. Lusson, A. Tromnos-Carli and G. Didier, J. Cryst. Growth 138, 168 (1994).

    Article  Google Scholar 

  4. 4.

    H. Chen, S. A. Awadalla, J. Mackenzie, R. Redden, G. Bindley, A. E. Bolotnikov, G. S. Camarda, G. Carini and R. B. James, IEEE Transactions on Nuclear Science 54, 811 (2007).

    CAS  Article  Google Scholar 

  5. 5.

    R. Schoenholz, R. Dian and R. Nitsche, J. Cryst. Growth 72, 72 (1985).

    CAS  Article  Google Scholar 

  6. 6.

    G. Yang, A. E. Bolotnikov, Y. Cui, G. S. Camarda, A. Hossain and R. B. James, J. Cryst. Growth 311, 99 (2008).

    CAS  Article  Google Scholar 

  7. 7.

    A. E. Bolotnikov, G. S. Camarda, G. A. Carnini, Y. Cui, L. Li and R. B. James, Nucl. Instr. Meth. Phys. Res. A 571, 687 (2007).

  8. 8.

    D. S. Bale, J. Appl. Phys. 107, 014519 (2010).

    Article  Google Scholar 

  9. 9.

    U. N. Roy, A. Gueorguiev, S. Weiler and J. Stein, J. Cryst. Growth 312, 33 (2010).

    Article  Google Scholar 

  10. 10.

    A. E. Bolotnikov, N. A-Jabbar, O. S. Babalola, G. S. Camarda, Y. Cui, A. Hossain, E. M. Jackson, H. C. Jackson, J. A. James, K. T. Kohman, A. L. Luryi and R. B. James, IEEE Trans. on Nucl. Sci. 55, 2757 (2008).

    CAS  Article  Google Scholar 

  11. 11.

    A. E. Bolotnikov, O. S. Babalola, G. S. Camarda, Y. Cui, S. U. Egarievwe, R. Hawrami, A. Hossain, G. Yang and R. B. James, IEEE Trans. on Nucl. Science 57, 910 (2010).

    CAS  Article  Google Scholar 

  12. 12.

    A. E. Bolotnikov, G. S. Camarda, G. A. Carini, Y. Cui, K. T. Kohman, L. Li, M. B. Salomon and R. B. James, IEEE Trans. on Nucl. Science 54, 821 (2007).

    CAS  Article  Google Scholar 

  13. 13.

    J. E. Toney, B. A. Brunett, T. E. Schlesinger, J. M. Van Scyoc, R. B. James, M. Schieber, M. Goorsky, H. Yoon, E. Eissler, and C. Johnson, Nucl. Instrum. Methods A 380, 132 (1996).

  14. 14.

    T. E. Schlesinger, J. E. Toney, H. Yoon, E. Y. Lee, B. A. Brunett, L. Franks and R. B. James, Materials Sc. and Engr. Reports 32, 103 (2001).

    Article  Google Scholar 

  15. 15.

    G. Yang, W. Jie, Q. Li, T. Wang, G. Li and H. Hua, J. Cryst. Growth 283, 431 (2005).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to U. N. Roy.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Roy, U.N., Weiler, S., Stein, J. et al. Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement. MRS Online Proceedings Library 1341, 202 (2011). https://doi.org/10.1557/opl.2011.1478

Download citation