Structure and optical properties of Ca silicide films and Si/Ca3Si4/Si(111) heterostructures

Galkin Nikolay Gennadievich, Bezbabnyi Dmitri Aleksandrovich, Dotsenko Sergei Andreevich, Galkin Konstantin Nikolaevich, Chernev Igor Mikhailovich, Chusovitin Evgenii Anatolievich, Nemes Incze Péter, Dózsa László, Pécz Béla, Shamirzaev Timur Sezgitovich, Gutakovski Anton Konstantinovich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Thick, thin films and island of Ca silicide have been grown by Ca deposition onto 500 oC Si(111)7x7 substrates. The crystal structure of the grown layers strongly differs from the known Ca silicides (Ca2Si, CaSi, Ca5Si3, Ca14Si19, CaSi2). The phonon peaks at 389 and 416 cm-1 and the interband transition peaks (0.9-1.0, 1.3-1.7 and 2.0-2.5 eV) belong to another silicide - Ca3Si4. Peculiarities of crystal, electronic, and phonon structure and optical properties of the grown Ca silicide films were measured by in situ and ex situ methods permit to state that the formed Ca silicide film has a composition Ca3Si4. Heterostructures with embedded Ca3Si4 films with different thicknesses have been formed atop the Ca3Si4 films by MBE and SPE at 500 oC. The observed density of pinholes with different sizes suggests the Si growth atop the Ca silicide follows a 3D mechanism. Photoluminescence was found for the first time in Si/Ca3Si4/Si(111) heterostructures.

Original languageEnglish
Title of host publicationPhysics and Technology of Nanostructured Materials II
PublisherTrans Tech Publications Ltd
Pages71-79
Number of pages9
ISBN (Print)9783037859704
DOIs
Publication statusPublished - Jan 1 2014
Event2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, ASCO-Nanomat 2013 - Vladivostok, Russian Federation
Duration: Aug 20 2013Aug 27 2013

Publication series

NameSolid State Phenomena
Volume213
ISSN (Electronic)1662-9779

Other

Other2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, ASCO-Nanomat 2013
CountryRussian Federation
CityVladivostok
Period8/20/138/27/13

Keywords

  • Double heterostructures
  • Electronic and crystal structure
  • Films
  • Optical properties
  • Phonon structure
  • Silicon

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Structure and optical properties of Ca silicide films and Si/Ca<sub>3</sub>Si<sub>4</sub>/Si(111) heterostructures'. Together they form a unique fingerprint.

  • Cite this

    Gennadievich, G. N., Aleksandrovich, B. D., Andreevich, D. S., Nikolaevich, G. K., Mikhailovich, C. I., Anatolievich, C. E., Péter, N. I., László, D., Béla, P., Sezgitovich, S. T., & Konstantinovich, G. A. (2014). Structure and optical properties of Ca silicide films and Si/Ca3Si4/Si(111) heterostructures. In Physics and Technology of Nanostructured Materials II (pp. 71-79). (Solid State Phenomena; Vol. 213). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.213.71