Abstract
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 SrNbO3 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 SrNbO3 in the UV spectral range of 260–320 nm is on par with indium tin oxide in the visible, making SrNbO3 an ideal electrode material in high-performance UV light emitting diodes relevant in sanitation application, food packaging, UV photochemotherapy, and biomolecule sensing.
| Original language | English (US) |
|---|---|
| Article number | 102 |
| Journal | Communications Physics |
| Volume | 3 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 1 2020 |
Bibliographical note
Funding Information:Y.P., J.R., Ar.P., A.l.P., T.B., V.G., and R.E.H. acknowledge support from the National Science Foundation through DMR-1629477 and J.R. from the NSF Graduate Research Fellowship Program under Grant No. DGE1255832. DO acknowledges support from the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant No. 16K05737. Y.H. and T.H. acknowledge support from the JSPS KAKENHI Grant No 16H06441 and 19K22227. We thank Prof. Tomoteru Fukumura of Tohoku University for allowing us to use the pulsed laser deposition equipment and X-ray diffractometer.
Publisher Copyright:
© 2020, The Author(s).