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Download fileLow-cost fabrication of tunable band gap composite indium and gallium nitrides
journal contribution
posted on 2019-03-05, 13:38 authored by Andrew D. McInnes, Jagdeep Sagu, Diana Mehta, Upul Wijayantha-Kahagala-GamageIII-nitride materials have been linked with a vast number of exciting applications from power electronics
to solar cells. Herein, polycrystalline InN, GaN and systematically controlled InxGa1−xN composite thin
flms are fabricated on FTO glass by a facile, low-cost and scalable aerosol assisted chemical vapor
deposition technique. Variation of the indium content in the composite flms leads to a dramatic shift
in the optical absorbance properties, which correlates with the band edges shifting between those of
GaN to InN. Moreover, the photoelectrochemical properties are shown to vary with indium content,
with the 50% indium composite having an external quantum efciency of around 8%. Whilst the
overall photocurrent is found to be low, the photocurrent stability is shown to be excellent, with little
degradation seen over 1hour. These fndings demonstrate a new and low-cost method for fabricating
polycrystalline III-nitrides, which have a range of interesting properties that are highly sought after for
many applications.
Funding
Tis research was partly funded by the Engineering and Physical Sciences Research Council (Grant No. EP/ G037116/1) through PhD studentships (for A.M. and D.M.) with the Doctoral Training Centre for Hydrogen, Fuel Cells and the Applications. J.S. and K.G.U.W. acknowledge the support received through the Engineering and Physical Sciences Research Council (Grant No. EP/L017709/1).
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Scientific ReportsVolume
9Issue
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MCINNES, A.D. ... et al., 2019. Low-cost fabrication of tunable band gap composite indium and gallium nitrides. Scientific Reports, 9: 2313.Publisher
© The Authors. Published by Springer NatureVersion
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This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Publication date
2019-02-19Notes
This is an Open Access Article. It is published by Springer Nature under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/eISSN
2045-2322Publisher version
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