Room-temperature single-photon emitters in titanium dioxide optical defects.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY(2018)
摘要
Fluorescence properties of crystallographic point defects within different morphologies of titanium dioxide were investigated. For the first time, room-temperature single-photon emission in titanium dioxide optical defects was discovered in thin films and commercial nanoparticles. Three-level defects were identified because the g((2)) correlation data featured prominent shoulders around the antibunching dip. Stable and blinking photodynamics were observed for the single-photon emitters. These results reveal a new room-temperature single-photon source within a wide bandgap semiconductor.
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关键词
fluorescence,optical defects,room temperature,single-photon emitters,titanium dioxide
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