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SrNbO3 as a transparent conductor in the visible and ultraviolet spectra
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SrNbO3 as a transparent conductor in the visible and ultraviolet spectra
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Journal Article
SrNbO3 as a transparent conductor in the visible and ultraviolet spectra
2020
Overview
Few materials have been identified as high-performance transparent conductors in the visible regime (400–700 nm). Even fewer conductors are known to be transparent in ultraviolet (UV) spectrum, especially at wavelengths below 320 nm. Doped wide-bandgap semiconductors employed currently as UV transparent conductors have insufficient electrical conductivities, posing a significant challenge for achieving low resistance electrodes. Here, we propose SrNbO
3
as an alternative transparent conductor material with excellent performance not only in the visible, but also in the UV spectrum. The high transparency to UV light originates from energetic isolation of the conduction band, which shifts the absorption edge into the UV regime. The standard figure of merit measured for SrNbO
3
in the UV spectral range of 260–320 nm is on par with indium tin oxide in the visible, making SrNbO
3
an ideal electrode material in high-performance UV light emitting diodes relevant in sanitation application, food packaging, UV photochemotherapy, and biomolecule sensing.
Optically transparent electrodes with high electrical conductance are essential for the implementation of optoelectronics, but current technology performs poorly in the ultraviolet regime. Here, SrNbO
3
is proposed as an alternative material due to its high figure of merit in the ultraviolet range.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ Physics
