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Applied Physics A

, 125:874 | Cite as

Growth of endotaxial Ge nanocrystals in Si(100) matrix via low-energy ion implantation

  • Susheel Kumar Gundanna
  • Puspendu Guha
  • B. Sundaravel
  • Umananda M. BhattaEmail author
Article
  • 19 Downloads

Abstract

Embedded structures in a crystalline substrate, endotaxial structures, play a major role in thermoelectric and optoelectronic applications. Here, we have fabricated Ge nanostructures inside Si(100) matrix via low-energy Ge+ ion implantation. Thermally grown SiO2 layer over the Si substrate has been used as a protective coating to avoid low-energy sputtering of the Si surface. 300 keV Ge ions are implanted into Si(100) matrix at two different fluences, 1 × 1015 and 5 × 1015 ions/cm2. After annealing the as-implanted specimens at 800 °C under the inert atmosphere for 1 h, the growth of Ge nanoclusters has been studied by Raman spectroscopy. Endotaxial nature of the Ge nanocrystals has been studied using cross-sectional high-resolution TEM. The compatibility between Ge and Si at the nanocrystal/matrix interface has been discussed in detail using high-resolution phase-contrast imaging.

Notes

Acknowledgements

This work is funded by UGC-DAE-CSR-KC/CRS/15/IOP/MS/01 collaborative research project. The authors would like to thank Prof. P V Satyam, IOP, Bhubaneswar, for providing access to the electron microscopy facility.

Compliance with ethical standards

Conflict of interest

The authors have no conflicts of interest to declare.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Susheel Kumar Gundanna
    • 1
  • Puspendu Guha
    • 2
    • 3
    • 4
  • B. Sundaravel
    • 5
  • Umananda M. Bhatta
    • 1
    Email author
  1. 1.Centre for Incubation, Innovation, Research and Consultancy, Jyothy Institute of TechnologyVisvesvaraya Technological UniversityBengaluruIndia
  2. 2.Institute of PhysicsSachivalaya MargBhubaneswarIndia
  3. 3.Homi Bhabha National Institute, Training School ComplexMumbaiIndia
  4. 4.RIAM, College of EngineeringSeoul National UniversitySeoulRepublic of Korea
  5. 5.Materials Science GroupIndira Gandhi Centre for Atomic ResearchKalpakamIndia

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