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Updated: Sep 23, 2025

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Highly intense room-temperature photoluminescence in V2O5 nanospheres
Top Khac Le1, Manil Kang2, Sang Wook Han1
1Department of Physics, University of Ulsan Ulsan 44610 Republic of Korea sokkim@ulsan.ac.krb.
Abstract:
Room-temperature photoluminescence (PL) in V2O5 nanospheres with zero-like dimensional structure was investigated. A large number of V4+ oxidation states in the nanospheres were observed by X-ray photoelectron spectroscopy (XPS) measurements. The nanospheres revealed high PL intensity compared with previous studies. In particular, they showed intense ultraviolet (UV) PL near a wavelength of 396 nm (3.13 eV). The intense UV PL was attributed to the enhanced transition probability due to the large number of V4+ (3d1) oxidation states. The PL properties showed strong dependencies on the oxidation states and their distribution.
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