Effect of doping on the opto-electronic properties of hollow spheroid ZnO quantum dots: A theoretical study

2021 ◽  
Vol 270 ◽  
pp. 115220
Author(s):  
Sankarasubramanian Gopalakrishnan ◽  
Ramasamy Shankar ◽  
Ponmalai Kolandaivel
Keyword(s):  
Quantum Dots ◽  
Electronic Properties ◽  
Theoretical Study ◽  
Zno Quantum Dots ◽  
Effect Of Doping

Theoretical study on the optical and electronic properties of graphene quantum dots doped with heteroatoms

2018 ◽  
Vol 20 (22) ◽  
pp. 15244-15252 ◽  
Author(s):  
Jianguang Feng ◽  
Hongzhou Dong ◽  
Beili Pang ◽  
Feifei Shao ◽  
ChunKai Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Electronic Properties ◽  
Theoretical Study ◽  
Graphene Quantum Dots ◽  
Electron Densities ◽  
Optical And Electronic Properties ◽  
Td Dft

By the TD-DFT approach, we demonstrate that heteroatoms can assist charge transfer and alter the distribution of electron densities in doped-GQDs.

scholarly journals Electronic properties and quasi-zero-energy states of graphene quantum dots

2021 ◽  
Vol 103 (23) ◽  
Author(s):  
H. V. Grushevskaya ◽  
G. G. Krylov ◽  
S. P. Kruchinin ◽  
B. Vlahovic ◽  
Stefano Bellucci
Keyword(s):  
Quantum Dots ◽  
Electronic Properties ◽  
Graphene Quantum Dots ◽  
Zero Energy ◽  
Energy States

Structural, vibrational and electronic properties of α′-Ga2S3 under compression

2021 ◽  
Author(s):  
S. Gallego-Parra ◽  
R. Vilaplana ◽  
O. Gomis ◽  
E. Lora da Silva ◽  
A. Otero-de-la-Roza ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Theoretical Study ◽  
Low Pressure ◽  
Electron Pairs ◽  
System P ◽  
Pressure Phase

We report a joint experimental and theoretical study of the low-pressure phase of α′-Ga2S3 under compression. The structural, vibrational, topological and electronic properties have been evaluated to reveal the relevance of the vacancy channels and the single and double lone electron pairs in the pressure behaviour of this system.

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
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