Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4926727
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Funding
- National Basic Research Programs of China [2011CB922102, 2013CB932901]
- Natural Science Foundation of China [11374141, 61264008]
- Science and Technology Foundation of Guizhou Province [J[2013] 2277]
- Natural Science Foundation of Guizhou Province Education Department [KY[2013] 192]
- City University of Hong Kong Applied Research Grant (ARG) [9667104]
- City University of Hong Kong Strategic Research Grant (SRG) [7004188]
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An electrochemical method to prepare two-dimensional (2D) layered black phosphorus oxide with an in-homogeneous and non-stoichiometric structure is developed and described, The localized oxygen-related electronic states induce tunable photoluminescence (PL) between 620 and 670nm. After oxidation, several new Raman modes with frequencies below 300cm(-1) emerge and the A(g)(1) mode splits into two sub-bands. The frequency difference between the two sub-bands (Delta) exhibits a monotonic dependence on the emission wavelength suggesting that PL is determined by the degree of oxidation. Similar to graphene oxide, phosphorene oxide is a promising 2D structure with many potential applications. (C) 2015 AIP Publishing LLC.
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