Journal
JOURNAL OF APPLIED PHYSICS
Volume 118, Issue 8, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4929425
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Funding
- National Science Foundation [DMR-1303742]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1303742] Funding Source: National Science Foundation
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Ultra-thin layer molybdenum oxide doping of fullerene has been investigated using ultraviolet photoemission spectroscopy (UPS) and X-ray photoemission spectroscopy (XPS). The highest occupied molecular orbital (HOMO) can be observed directly with UPS. It is observed that the Fermi level position in fullerene is modified by ultra-thin-layer molybdenum oxide doping, and the HOMO onset is shifted to less than 1.3 eV below the Fermi level. The XPS results indicate that charge transfer was observed from the C-60 to MoOx and Mo6+ oxides is the basis as hole dopants. (C) 2015 AIP Publishing LLC.
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