Nanostructure and Strain Field in Vertically Aligned Nano-Islands for Si/Ge 2D Photonic Nanocrystals.

Abstract

The local strain field and the intermixing of a Ge nano-islands (NIs)/Si spacer stacked structure in a novel solar cell with a p-i-n type Si single crystal with two-dimensional photonic nanocrystals connecting to the vertically aligned NIs were analyzed using electron microscopy. High-angle annular dark field-scanning transmission electron microscope (HAADF-STEM) images show intermixing between Ge and Si clearly and reveal that the surface segregation of Ge becomes advanced. The average composition of the NIs is Ge0.42Si0.58, which is almost constant in a row of vertically aligned NIs. The local strain analysis results obtained from the high-resolution transmission electron microscope (HRTEM) images show that the strain state is partially relaxed after the elastic relaxation of NIs.

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

References

  1. 1.

    N. Usami, W. Pan, T. Tayagaki, S.-T. Chu, J. Li, T. Feng, Y. Hoshi, and T. Kiguchi, Nanotechnology, 23, 185401 (2012).

    Article  Google Scholar 

  2. 2.

    D. J. Eaglesham and M. Cerullo, Phys. Rev. Lett., 64, 1943 (1990).

    CAS  Article  Google Scholar 

  3. 3.

    D. Cherns, C.J Kiely, and A.R.Preston, Ultramicroscopy, 24, 355 (1988).

    CAS  Article  Google Scholar 

  4. 4.

    R. Vincent, A.R.Preston, and M.A. King, Ultramicroscopy, 24, 409 (1988).

    CAS  Article  Google Scholar 

  5. 5.

    C.T. Chou, S.C. Anderson, D.J.H. Cockayne, A.Z. Shikorski, and M.R. Vaughan, Ultramicroscopy, 55, 334 (1994).

    CAS  Article  Google Scholar 

  6. 6.

    T. Ide, A. Sakai, and K. Shimizu, Thin Solid Films, 357, 22 (1999).

    CAS  Article  Google Scholar 

  7. 7.

    M.D. Robertson, J.E. Currie, J.M. Corbett, and J.B. Webb, Ultramicroscopy, 58, 175 (1998).

    Article  Google Scholar 

  8. 8.

    M.J. Hÿtch, E. Snoeck, and R. Kilaas, Ultramicroscopy, 74, 131 (1998).

    Article  Google Scholar 

  9. 9.

    F.M. Ross, R. Killas, E. Snoeck, M. Hÿtch, A. Thorel and L. Normand, Mater. Res. Soc. Symp. Proc. 466, 245 (1997).

    CAS  Article  Google Scholar 

  10. 10.

    M. Foeth, A. Sfera, P. Stadelmann, and P.A. Buffat, J. Electron Microsc. 48, 717 (1999).

    CAS  Article  Google Scholar 

  11. 11.

    M.W. Chu, I. Szafraniak, R. Scholz, C. Harnagea, D. Hesse, M. Alexe, and U. Gösele, Nat. Mater. 3, 87 (2004).

    CAS  Article  Google Scholar 

  12. 12.

    T. Kiguchi, K. Aoyagi, T.J. Konno, S. Utsugi, T. Yamada, and H. Funakubo, Sci. Technol. Adv. Mater. 12, 034413 (2011).

    Article  Google Scholar 

  13. 13.

    T. Kiguchi, K. Aoyagi, T.J. Konno, S. Utsugi, T. Yamada, and H. Funakubo, Mater. Res. Soc. Symp. Proc. 1199, 1199-F09-08 (2010).

    Article  Google Scholar 

  14. 14.

    M.J. Hÿtch, J.-L. Putaux, and J.-M. Penisson, Nature, 243, 270 (2003).

    Article  Google Scholar 

  15. 15.

    C.L. Johnson, E. Snoeck, M. Ezcurdia, B. Rodriguez-Gonzalez, I. Pastoriza-Santos, L.M. Liz-Marzan, and M.J. Hÿtch, Nat. Mater. 7, 120 (2008).

    CAS  Article  Google Scholar 

  16. 16.

    M. Sennour, S. Lartigue-Korinek, Y. Champion, and M.J. Hÿtch, J. Mater. Sci. 43, 3806 (2008).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Takanori Kiguchi.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kiguchi, T., Hoshi, Y., Tayagaki, T. et al. Nanostructure and Strain Field in Vertically Aligned Nano-Islands for Si/Ge 2D Photonic Nanocrystals.. MRS Online Proceedings Library 1510, 9 (2013). https://doi.org/10.1557/opl.2013.446

Download citation