Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4832455
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Funding
- EPSRC [EP/E054668/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1726825, EP/E054668/1] Funding Source: researchfish
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Surface transfer doping of diamond has been demonstrated using MoO3 as a surface electron acceptor material. Synchrotron-based high resolution photoemission spectroscopy reveals that electrons are transferred from the diamond surface to MoO3, leading to the formation of a sub-surface quasi 2-dimensional hole gas within the diamond. Ex-situ electrical characterization demonstrated an increase in hole carrier concentration from 1.00 x 10(13)/cm(2) for the air-exposed hydrogen-terminated diamond surface to 2.16 x 10(13)/cm(2) following MoO3 deposition. This demonstrates the potential to improve the stability and performance of hydrogen-terminated diamond electronic devices through the incorporation of high electron affinity transition metal oxides. (C) 2013 AIP Publishing LLC.
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