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Dynamics of melting and crystallization processes in CdTe under laser irradiation

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Abstract

Numerical modeling results indicate that cadmium vaporization caused by nanosecond pulses of a ruby laser has a significant effect on the dynamics of phase transitions in the near-surface region of CdTe and leads to surface cooling of the material, resulting in a nonmonotonic temperature profile, with a maximum at a depth of about 20 nm. At incident energy densities above the threshold for CdTe melting, the molten zone forming below the surface layer extends both toward the surface and into the bulk of the semiconductor. Cd vaporization and the diffusion of Cd and Te in the melt give rise to tellurium enrichment in the near-surface region. Taking into account the dependences of the crystallization temperature and the latent heat of the phase transition on the Cd and Te concentrations in the melt, we achieved reasonable agreement with experimental data on the effect of incident energy density on the time during which a molten layer is present in CdTe.

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References

  1. Bell, R.O., Toulemonde, M., and Siffert, P., Calculated Temperature Distribution during Laser Annealing in Silicon and Cadmium Telluride, Appl. Phys., 1979, vol. 19, pp. 313–319.

    Article  CAS  Google Scholar 

  2. Golovan, L.A., Timoshenko, V.Yu., and Kashkarov, P.K., Laser-Induced Melting and Defect Formation in the Near-Surface Region of Cadmium Telluride, Poverkhnost, 1995, no. 10, pp. 65–70.

  3. Hatanaka, Y., Niraula, M., Aoki, Y., et al., Surface Processing of CdTe Compound Semiconductor by Excimer Laser Doping, Appl. Surf. Sci., 1999, vol. 142, pp. 227–232.

    Article  CAS  Google Scholar 

  4. Gnatyuk, V.A., Aoki, T., Gorodnychenko, O.S., and Hatanaka, Y., Solid-Liquid Phase Transitions in CdTe Crystals under Pulsed Laser Irradiation, Appl. Phys. Lett., 2003, vol. 83, pp. 3704–3706.

    Article  CAS  Google Scholar 

  5. Shul’pina, I.L., Zelenina, N.K., and Matveev, O.A., Thermal Effect of Pulsed Laser Irradiation on the Defect Structure of CdTe Single Crystals, Fiz. Tverd. Tela (S.-Peterburg), 2000, vol. 42, no. 3, pp. 548–552.

    Google Scholar 

  6. Viskovatykh, I.Yu., Lakeenkov, V.M., Kashkarov, P.K., et al., Effect of Pulsed Laser Irradiation on the Luminescent Properties of Cadmium Telluride, Izv. Akad. Nauk, Ser. Fiz., 1993, vol. 57, no. 9, pp. 12–16.

    Google Scholar 

  7. Golovan, L.A., Kashkarov, P.K., Lakeenkov, V.M., et al., Rutherford Backscattering Study of Defect Formation in CdTe Crystals, Fiz. Tverd. Tela (S.-Peterburg), 1998, vol. 40, no. 2, pp. 209–211.

    CAS  Google Scholar 

  8. Golovan, L.A., Markov, B.A., Kashkarov, P.K., and Timoshenko, V.Yu., Evaporation Effect on Laser Induced Solid-Liquid Phase Transitions in CdTe and HgCdTe, Solid State Commun., 1998, vol. 108, no. 10, pp. 707–712.

    Article  CAS  Google Scholar 

  9. Anisimov, S.I., Imas, Ya.A., Romanov, G.I., and Khodyko, Yu.V., Deistvie izlucheniya bol’shoi moshchnosti na metally (Effect of High-Power Radiation on Metals), Moscow: Nauka, 1970.

    Google Scholar 

  10. Dushman, S., Scientific Foundations of Vacuum Technique, New York: Wiley, 1962.

    Google Scholar 

  11. Haloui, A., Feutelais, Y., and Legendre, B., Experimental Study of the Ternary System Cd-Te-Zn, J. Alloys Compd., 1997, vol. 260, pp. 179–192.

    Article  CAS  Google Scholar 

  12. Glazov, V.M. and Pavlova, L.M., Temperature Dependence of Density and the Nature of Interatomic Interaction in Molten Cadmium and Zinc Tellurides, Zh. Fiz. Khim., 2001, vol. 75, no. 10, pp. 1735–1741.

    CAS  Google Scholar 

  13. Zanio, K., Cadmium Telluride, Semicond. Semimet., 1978, vol. 13.

  14. Adachi, S. and Kimura, T., Optical Constants of Zn1−x CdxTe Ternary Alloys: Experiment and Modeling, Jpn. J. Appl. Phys., Part 1, 1993, vol. 32, no. 8, pp. 3496–3501.

    Article  CAS  Google Scholar 

  15. Fang, R. and Brebrick, R.F., CdTe: I. Solidus Curve and Composition-Temperature-Tellurium Partial Pressure Data for Te-Rich CdTe(s) from Optical Density Measurements, J. Phys. Chem. Solids, 1996, vol. 57, no. 4, pp. 443–450.

    Article  CAS  Google Scholar 

  16. Ko, E., Alemany, M.M.G., and Chelikowsky, J.R., Viscosities of Liquid CdTe near Melting Point from Ab Initio Molecular Dynamics Calculations, J. Chem. Phys., 2004, vol. 121, pp. 942–947.

    Article  CAS  Google Scholar 

  17. Ivlev, G.D., Gatskevich, E.I., Zhvavyi, S.P., et al., Phase Transformations Induced in CdTe Single Crystal by Ruby Laser Pulsed Irradiation, Proc. SPIE-Int. Soc. Opt. Eng., 2004, vol. 5449, pp. 10–18.

    CAS  Google Scholar 

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Authors and Affiliations

  1. Institute of Electronics, Belarussian Academy of Sciences, Logoiskii trakt 22, Minsk, 220090, Belarus

    S. P. Zhvayi & G. L. Zykov

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  1. S. P. Zhvayi
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  2. G. L. Zykov
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Original Russian Text © S.P. Zhvavyi, G.L. Zykov, 2006, published in Neorganicheskie Materialy, 2006, Vol. 42, No. 7, pp. 794–799.

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Zhvayi, S.P., Zykov, G.L. Dynamics of melting and crystallization processes in CdTe under laser irradiation. Inorg Mater 42, 717–722 (2006). https://doi.org/10.1134/S0020168506070053

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  • DOI: https://doi.org/10.1134/S0020168506070053

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