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Journal of Materials Science
Published in: Journal of Materials Science 5/2018

03-11-2017 | Electronic materials

Engineering the band gap of LaCrO3 doping with transition metals (Co, Pd, and Ir)

Authors: O. Polat, Z. Durmus, F. M. Coskun, M. Coskun, A. Turut

Published in: Journal of Materials Science | Issue 5/2018

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Abstract

Exceptional properties such as dielectric, ferroelectric, piezoelectric, magnetic, catalytic, and photovoltaic of perovskite materials open new doors to many groundbreaking discoveries for unique device ideas. These materials properties are inherited from their crystal structures; therefore, the features can be tuned via varying details of the crystal structures. In the literature, LaCrO3 (LCO) is one those mostly examined perovskites for various purposes such as solid oxide fuel cells, catalytic converters, and sensors. In the present study, the band gap tuning of LCO was investigated via doping a transition element such as cobalt (Co), palladium (Pd), and iridium (Ir) into Cr atom. The synthesized doped and un-doped LCO powders were characterized by infrared spectra (IR) and X-ray diffraction (XRD). Scanning electron microscopy (SEM) was employed to study the surface topography of LCO and doped LCO thin films on silicon substrates. The band gaps of the LCO and doped LCO films were scrutinized using a UV–Vis spectrometer. Our study has shown that the band gap of LCO was successfully lowered from 3.4 eV to 2.66 eV and can be engineered via substitution at various mol% of transition elements (Co, Pd, Ir) onto B-site Cr atom in the LCO perovskite structure.
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Metadata
Title
Engineering the band gap of LaCrO3 doping with transition metals (Co, Pd, and Ir)
Authors
O. Polat
Z. Durmus
F. M. Coskun
M. Coskun
A. Turut
Publication date
03-11-2017
Publisher
Springer US
Published in
Journal of Materials Science / Issue 5/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1773-3

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