Room-temperature single-photon emitters in titanium dioxide optical defects

Beilstein Journal of Nanotechnology

卷:9

Chap H. To¹  Aleksandra B. Djurišić¹  Yu H. Leung¹  Kelvin Chung²  Snjezana Tomljenovic-Hanic² 

[1] Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong;

[2] School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia;

关键词: fluorescence;    optical defects;    room temperature;    single-photon emitters;    titanium dioxide;   

DOI  :  10.3762/bjnano.9.100

来源: DOAJ

【 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.

【 授权许可】

Unknown