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Graphene/SrTiO3 hetero interface studied by X-ray photoelectron spectroscopy
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10.1016:j.pnsc.2016.06.010.pdf
Date
2016-08-01
Author
KARAMAT, SHUMAİLA
KE, C
Inkaya, U. Y.
AKRAM, Rizwan
Yıldız, İlker
Zaman, S. Shah
Oral, Ahmet
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The present paper focuses on study of graphene and strontium titanate (SrTiO3 or STO) interface. An ambient pressure chemical vapour deposition (AP-CVD) setup is used to grow graphene on STO (110) substrates in the presence of methane, argon and hydrogen gases at 1000 degrees C for 4 h. Raman spectroscopy measurements confirm the presence of graphene on STO substrates due to the existence of typical D and G peaks referring to graphene. These characteristic peaks are missing in the spectrum for bare substrates. X-ray photoelectron spectroscopy (XPS) is carried out for elemental analysis of samples, and study their bonding with STO substrates. We employed the valence band spectrum to calculate the valence band offset (VBO) and conduction band offset (CBO) at the G-STO interface. Also, we present an energy band diagram for Bi-layer and ABC (arranging pattern of carbon layers) stacked graphene layers. (C) 2016 Chinese Materials Research Society. Production and hosting by Elsevier B.V.
Subject Keywords
General Materials Science
,
Chemical vapour deposition
,
X-ray photoelectron spectroscopy
,
Raman spectroscopy
,
Graphene
,
Valence band maximum
URI
https://hdl.handle.net/11511/47257
Journal
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
DOI
https://doi.org/10.1016/j.pnsc.2016.06.010
Collections
Test and Measurement Center In advanced Technologies (MERKEZ LABORATUVARI), Article
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BibTeX
S. KARAMAT et al., “Graphene/SrTiO3 hetero interface studied by X-ray photoelectron spectroscopy,”
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
, vol. 26, no. 4, pp. 422–426, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47257.