Lebens-Higgins, Z;
Scanlon, DO;
Paik, H;
Sallis, S;
Nie, Y;
Uchida, M;
Quackenbush, NF;
... Piper, LF; + view all
(2016)
Direct Observation of Electrostatically Driven Band Gap Renormalization in a Degenerate Perovskite Transparent Conducting Oxide.
Physical Review Letters
, 116
(2)
, Article 027602. 10.1103/PhysRevLett.116.027602.
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Abstract
We have directly measured the band gap renormalization associated with the Moss-Burstein shift in the perovskite transparent conducting oxide (TCO), La-doped BaSnO_{3}, using hard x-ray photoelectron spectroscopy. We determine that the band gap renormalization is almost entirely associated with the evolution of the conduction band. Our experimental results are supported by hybrid density functional theory supercell calculations. We determine that unlike conventional TCOs where interactions with the dopant orbitals are important, the band gap renormalization in La-BaSnO_{3} is driven purely by electrostatic interactions.
Type: | Article |
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Title: | Direct Observation of Electrostatically Driven Band Gap Renormalization in a Degenerate Perovskite Transparent Conducting Oxide |
Location: | United States |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.116.027602 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.116.027602 |
Language: | English |
Additional information: | This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
URI: | https://discovery.ucl.ac.uk/id/eprint/1476242 |
1. | United States | 5 |
2. | Russian Federation | 2 |
3. | Indonesia | 1 |
4. | South Africa | 1 |
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