Luminescent epitaxial β-FeSi2 films were grown on the Ag-layer pre-coated Si(111) substrates by metal-organic chemical vapor deposition method. These epitaxial β-FeSi2 films had (101)/(110)-preferred orientation and were constructed with a triple-domain structure. The photoluminescence intensity of this (101)/(110)-orientated epitaxial β-FeSi2 films grown at 700°C was larger than that of β-FeSi2 films at the other deposition temperature, indicating the decreasing of the density of non-radiative recombination centers in β-FeSi2 film. The thermal equilibrium Si vacancy is considered to act as the non-radiative recombination centers in β-FeSi2.
Luminescent epitaxial β-FeSi2 grains were grown on the Si (111) substrates precoated with Au-layer. These epitaxial β-
FeSi2 grains had (101)/(110)-preferred orientation and were constructed with two kinds of triple-domain structure. The
Au-Si liquid phase obtained by the Au-Si eutectic reaction contributed to the formation of such β-FeSi2 grains on the Si
(111) surface. Clear photoluminescence (PL) spectrum of β-FeSi2 were observed up to 240 K that indicated the
formation of high-quality crystals with the low density of the non-radiative recombination center in the grains.
Luminescent epitaxial β-FeSi2 films were grown on the Ag-layer pre-coated Si(111) substrates. These epitaxial β-FeSi2
films had (101)/(110)-preferred orientation and were constructed with a triple-domain structure. The full width at half
maximum of the rocking curve of β-FeSi2202/220 was 0.19o for the films deposited at 760oC on the Si(111) substrates
with 85 nm-thick silver layer. The transmission electron microscope analysis indicated the flat and steep β-FeSi2/Si
interface. The photoluminescence intensity of this (101)/(110)-orientated epitaxial β-FeSi2 films was larger than that of
the directly grown β-FeSi2 films on the Si(111) without silver layer, indicating the decreasing of the density of nonradiative
recombination centers in β-FeSi2 film.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.