Electroluminescence from localized defects in zinc oxide: toward electrically driven single photon sources at room temperature.
Single photon sources are required for a wide range of applications in quantum information science, quantum cryptography, and quantum communications. However, the majority of room temperature emitters to date are only excited optically, which limits their proper integration into scalable devices. In this work, we overcome this limitation and present room temperature electrically driven light emission from localized defects in zinc oxide (ZnO) nanoparticles and thin films. The devices emit in the red spectral range and show excellent rectifying behavior. The emission is stable over an extensive period of time, providing an important prerequisite for practical devices. Our results open possibilities for building new ZnO-based quantum integrated devices that incorporate solid-state single photon sources for quantum information technologies.
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Sumin
S
Choi
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Amanuel M
AM
Berhane
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Angus
A
Gentle
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Cuong
C
Ton-That
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Matthew R
MR
Phillips
School of Physics and Advanced Materials, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
Igor
I
Aharonovich
LED; ZnO defects; electroluminescence; single emitters