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Studies of Scattering Mechanisms in Multilayer HgCdTe Heterostructures

  • 2021 U.S. Workshop on Physics and Chemistry of II-VI Materials
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Abstract

An analysis of carrier transport is performed on multilayer HgCdTe heterostructures with complex composition and do** profiles by combining models for carrier scattering with multilayer modeling of the transport properties obtained through resistivity and Hall measurements of the entire multilayer stack. The analysis is applied to the study of carrier scattering in low-doped HgCdTe multilayers grown on (211) CdZnTe substrates by molecular beam epitaxy. The predictive capability of the modeling and its usefulness as a form of rapid and accurate feedback from simple Hall effect measurements are highlighted. The ability to routinely produce HgCdTe films with free carrier concentration (nd–na) in the range of 1013–1014 cm−3 while preserving carrier mobility with respect to higher concentrations is evident from the dependence of mobility on carrier density for fixed HgCdTe compositions.

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Acknowledgments

The authors acknowledge and greatly appreciate the support of this work by their colleagues at Teledyne Scientific and Imaging. The authors acknowledge and thank Alice Wang and Peter Zhao at Evans Analytical Group (now Eurofins EAG Materials Science) for performing SIMS measurements and useful discussions.

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Authors and Affiliations

  1. Teledyne Scientific and Imaging, Camarillo, CA, 93012, USA

    B. Shojaei, S. Wang, J. Gruenewald, J. Ellsworth, D. Edwall, M. Daraselia, M. Dreiske, M. Edirisooriya, A. Yulius & M. Carmody

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  1. B. Shojaei
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  2. S. Wang
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  3. J. Gruenewald
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  4. J. Ellsworth
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  5. D. Edwall
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  6. M. Daraselia
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  7. M. Dreiske
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  8. M. Edirisooriya
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  9. A. Yulius
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  10. M. Carmody
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Correspondence to B. Shojaei.

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Shojaei, B., Wang, S., Gruenewald, J. et al. Studies of Scattering Mechanisms in Multilayer HgCdTe Heterostructures. J. Electron. Mater. 51, 4714–4720 (2022). https://doi.org/10.1007/s11664-022-09802-5

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  • DOI: https://doi.org/10.1007/s11664-022-09802-5

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