Theoretically Manipulating Quantum Dots on Two-Dimensional TiO2 Monolayer for Effective Visible Light Absorption

2017 ◽  
Vol 9 (9) ◽  
pp. 8255-8262 ◽  
Author(s):  
Ting Liao ◽  
Ziqi Sun ◽  
Shi Xue Dou
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Light Absorption ◽  
Two Dimensional ◽  
Visible Light Absorption

Structural reconstruction and visible-light absorption versus internal electrostatic field in two-dimensional GaN-ZnO alloys

Nanoscale ◽  
2021 ◽  
Author(s):  
Hanpu Liang ◽  
Yifeng Duan
Keyword(s):  
Visible Light ◽  
Electrostatic Field ◽  
Light Absorption ◽  
Red Shift ◽  
Two Dimensional ◽  
Visible Light Absorption ◽  
Visible Light Range ◽  
Optoelectronic Applications

GaN-ZnO alloys are more promising semiconductors than their counterparts for optoelectronic applications due to the abrupt red shift in the visible-light range. Unfortunately, the strong internal electrostatic field (IEF) seriously...

Tailored near-infrared-emitting colloidal heterostructured quantum dots with enhanced visible light absorption for high performance photoelectrochemical cells

2019 ◽  
Vol 7 (17) ◽  
pp. 10225-10230 ◽  
Author(s):  
Ali Imran Channa ◽  
Xin Tong ◽  
Jing-Yin Xu ◽  
Yongchen Liu ◽  
Changmeng Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Light Absorption ◽  
High Performance ◽  
Near Infrared ◽  
High Efficiency ◽  
Photoelectrochemical Cells ◽  
Visible Light Absorption ◽  
Cds Qds

Near-infrared-emitting CuGaS2/CdS QDs with enhanced visible light absorption were developed to achieve high efficiency photoelectrochemical cells.

scholarly journals Visible-Light Driven TiO2 Photocatalyst Coated with Graphene Quantum Dots of Tunable Nitrogen Doping

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 344 ◽  
Author(s):  
Xiong Sun ◽  
Hui-Jun Li ◽  
Nanquan Ou ◽  
Bowen Lyu ◽  
Bojie Gui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Light Emission ◽  
Graphene Quantum Dots ◽  
Visible Light Absorption ◽  
Visible Light Driven ◽  
Nitrogen Doped Graphene

Nitrogen doped graphene quantum dots (NGQDs) were successfully prepared via a hydrothermal method using citric acid and urea as the carbon and nitrogen precursors, respectively. Due to different post-treatment processes, the obtained NGQDs with different surface modifications exhibited blue light emission, while their visible-light absorption was obviously different. To further understand the roles of nitrogen dopants and N-containing surface groups of NGQDs in the photocatalytic performance, their corresponding composites with TiO2 were utilized to degrade RhB solutions under visible-light irradiation. A series of characterization and photocatalytic performance tests were carried out, which demonstrated that NGQDs play a significant role in enhancing visible-light driven photocatalytic activity and the carrier separation process. The enhanced photocatalytic activity of the NGQDs/TiO2 composites can possibly be attributed to an enhanced visible light absorption ability, and an improved separation and transfer rate of photogenerated carriers.

Two-dimensional subwavelength meta-nanopillar array for efficient visible light absorption

2013 ◽  
Vol 102 (16) ◽  
pp. 161109 ◽  
Author(s):  
S. Cao ◽  
W. Yu ◽  
T. Wang ◽  
Z. Xu ◽  
C. Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Two Dimensional ◽  
Visible Light Absorption

scholarly journals Rational tuning of high-energy visible light absorption for panchromatic small molecules by a two-dimensional conjugation approach

2016 ◽  
Vol 7 (6) ◽  
pp. 3857-3861 ◽  
Author(s):  
Bo He ◽  
Danylo Zherebetskyy ◽  
Hongxia Wang ◽  
Matthew A. Kolaczkowski ◽  
Liana M. Klivansky ◽  
...  
Keyword(s):  
Visible Light ◽  
Small Molecules ◽  
Electron Acceptor ◽  
Light Absorption ◽  
Rational Design ◽  
High Energy ◽  
Two Dimensional ◽  
Visible Light Absorption

Rational design leads to panchromatic absorption in small molecules by extension of conjugation on two orthogonal axes of an indigo-derived electron acceptor.

Highly efficient heterojunction solar cells enabled by edge-modified tellurene nanoribbons

2020 ◽  
Vol 22 (48) ◽  
pp. 28414-28422
Author(s):  
Yunzhi Gao ◽  
Kai Wu ◽  
Wei Hu ◽  
Jinlong Yang
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
Carrier Mobility ◽  
Two Dimensional ◽  
Visible Light Absorption ◽  
Heterojunction Solar Cells ◽  
High Carrier Mobility ◽  
High Carrier

Tellurene, a two-dimensional (2D) semiconductor, meets the requirements for optoelectronic applications with desirable properties, such as a suitable band gap, high carrier mobility, strong visible light absorption and high air stability.

A polyaniline-coated ZnS/ZnO/FTO photoelectrode for improving photocorrosion prevention and visible light absorption

2019 ◽  
Vol 43 (42) ◽  
pp. 16699-16705 ◽  
Author(s):  
Hyun Kim ◽  
Bee Lyong Yang
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Light Absorption ◽  
Wide Bandgap ◽  
Bandgap Engineering ◽  
Wide Bandgap Semiconductors ◽  
Visible Light Absorption ◽  
Bandgap Semiconductors

To enhance the absorption of visible light for wide-bandgap semiconductors, methods such as sensitizing with nanoparticles or quantum dots and bandgap engineering using dopants have been reported.

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