Electron Confinement Effects in the EPR Spectra of Colloidal n-Type ZnO Quantum Dots

2008 ◽  
Vol 112 (37) ◽  
pp. 14331-14335 ◽  
Author(s):  
Kelly M. Whitaker ◽  
Stefan T. Ochsenbein ◽  
Victor Z. Polinger ◽  
Daniel R. Gamelin
Keyword(s):  
Quantum Dots ◽  
Epr Spectra ◽  
Confinement Effects ◽  
Electron Confinement ◽  
Zno Quantum Dots

Dynamical nuclear polarization and confinement effects in ZnO quantum dots

2010 ◽  
Vol 247 (6) ◽  
pp. 1476-1479 ◽  
Author(s):  
Pavel G. Baranov ◽  
Sergei B. Orlinskii ◽  
Detlev M. Hofmann ◽  
Celso de Mello Donegá ◽  
Andries Meijerink ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nuclear Polarization ◽  
Confinement Effects ◽  
Dynamical Nuclear Polarization ◽  
Zno Quantum Dots

Investigation of confinement effects in ZnO quantum dots

2009 ◽  
Vol 20 (42) ◽  
pp. 425701 ◽  
Author(s):  
D Haranath ◽  
Sonal Sahai ◽  
Amish G Joshi ◽  
Bipin K Gupta ◽  
V Shanker
Keyword(s):  
Quantum Dots ◽  
Confinement Effects ◽  
Zno Quantum Dots

scholarly journals Synthesis and Characterization of Polyvinylpyrrolidone-Modified ZnO Quantum Dots and Their In Vitro Photodynamic Tumor Suppressive Action

2021 ◽  
Vol 22 (15) ◽  
pp. 8106
Author(s):  
Tianming Song ◽  
Yawei Qu ◽  
Zhe Ren ◽  
Shuang Yu ◽  
Mingjian Sun ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photodynamic Therapy ◽  
Inhibitory Effect ◽  
Therapeutic Effects ◽  
In Vivo Experiments ◽  
Potential Applications ◽  
Zno Quantum Dots ◽  
Zno Qds

Despite the numerous available treatments for cancer, many patients succumb to side effects and reoccurrence. Zinc oxide (ZnO) quantum dots (QDs) are inexpensive inorganic nanomaterials with potential applications in photodynamic therapy. To verify the photoluminescence of ZnO QDs and determine their inhibitory effect on tumors, we synthesized and characterized ZnO QDs modified with polyvinylpyrrolidone. The photoluminescent properties and reactive oxygen species levels of these ZnO/PVP QDs were also measured. Finally, in vitro and in vivo experiments were performed to test their photodynamic therapeutic effects in SW480 cancer cells and female nude mice. Our results indicate that the ZnO QDs had good photoluminescence and exerted an obvious inhibitory effect on SW480 tumor cells. These findings illustrate the potential applications of ZnO QDs in the fields of photoluminescence and photodynamic therapy.

Luminescence behaviour of chemically grown ZnO quantum dots

1998 ◽  
Vol 13 (10) ◽  
pp. 1154-1157 ◽  
Author(s):  
Kavita Borgohain ◽  
Shailaja Mahamuni
Keyword(s):  
Quantum Dots ◽  
Zno Quantum Dots

Synthesis of LiGaO2 nanocrystals and their application toward bright UV emission from ZnO quantum dots

2011 ◽  
Vol 330 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Takahisa Omata ◽  
Atsushi Tazuke ◽  
Katsuhiro Nose ◽  
Shinya Otsuka-Yao-Matsuo
Keyword(s):  
Quantum Dots ◽  
Uv Emission ◽  
Zno Quantum Dots

SPACE-CHARGE SPECTROSCOPY OF ELECTRONIC STATES IN Ge/Si QUANTUM DOTS WITH TYPE-II BAND ALIGNMENT

2007 ◽  
Vol 06 (05) ◽  
pp. 353-356
Author(s):  
A. I. YAKIMOV ◽  
A. V. DVURECHENSKII ◽  
A. I. NIKIFOROV ◽  
A. A. BLOSHKIN
Keyword(s):  
Quantum Dots ◽  
Electronic Structure ◽  
Binding Energy ◽  
Space Charge ◽  
Tensile Strain ◽  
Electronic States ◽  
Band Alignment ◽  
Type Ii ◽  
Electron Confinement ◽  
Si Quantum Dots

Space-charge spectroscopy was employed to study electronic structure in a stack of four layers of Ge quantum dots coherently embedded in an n-type Si (001) matrix. Evidence for an electron confinement in the vicinity of Ge dots was found. From the frequency-dependent measurements the electron binding energy was determined to be ~50 meV, which is consistent with the results of numerical analysis. The data are explained by a modification of the conduction band alignment induced by inhomogeneous tensile strain in Si around the buried Ge dots.

Sign in / Sign up

Export Citation Format

Share Document