Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4816511
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Funding
- Binghamton University
- Analytical and Diagnostics Laboratory Small Grant program at Binghamton University
- Ramsay Memorial Trust
- University College London
- National Science Foundation [DMR-1104484]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DEAC02-98CH10886]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- EPSRC [EP/K000144/1, EP/K000136/1, EP/F067496]
- EPSRC [EP/K000136/1, EP/K000144/1, EP/F067496/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K000144/1, EP/F067496/1, EP/K000136/1] Funding Source: researchfish
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1104484] Funding Source: National Science Foundation
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We report direct evidence of conduction band filling in 3% La-doped BaSnO3 using hard x-ray photoelectron spectroscopy. Direct comparisons with hybrid density functional theory calculations support a 3.2 eV indirect band gap. The use of hybrid DFT is verified by excellent agreement between our photoelectron spectra and O K-edge x-ray emission and absorption spectra. Our experimental and computational results demonstrate that the conduction band is primarily of Sn 5s orbital character with little O 2p contribution, which is a prerequisite for designing a perovskite-based transparent conducting oxide. (C) 2013 AIP Publishing LLC.
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