Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts

Nanoscale ◽  
2013 ◽  
Vol 5 (24) ◽  
pp. 12272 ◽  
Author(s):  
Dan Qu ◽  
Min Zheng ◽  
Peng Du ◽  
Yue Zhou ◽  
Ligong Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Graphene Quantum Dots ◽  
Absorption Bands ◽  
Visible Absorption ◽  
Doped Graphene ◽  
Co Doped

Three Colors Emission from S,N Co-doped Graphene Quantum Dots for Visible Light H2Production and Bioimaging

2015 ◽  
Vol 3 (3) ◽  
pp. 360-367 ◽  
Author(s):  
Dan Qu ◽  
Zaicheng Sun ◽  
Min Zheng ◽  
Jing Li ◽  
Yongqiang Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Graphene Quantum Dots ◽  
Doped Graphene ◽  
Co Doped

scholarly journals Quantum dot-sensitized O-linked heptazine polymer photocatalyst for the metal-free visible light hydrogen generation

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29633-29641
Author(s):  
Soumadri Samanta ◽  
Sunil Kumar ◽  
V. R. Battula ◽  
Arpna Jaryal ◽  
Neha Sardana ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Visible Light ◽  
Hydrogen Generation ◽  
Graphene Quantum Dots ◽  
Metal Free ◽  
Doped Graphene ◽  
Co Doped

A polymeric O-linked heptazine polymer (OLHP) decorated with S, N co-doped graphene quantum dots (S,N-GQDs) as a photosensitizer to utilize visible light (λ > 420 nm) for hydrogen generation.

S, N Co-Doped Graphene Quantum Dots Decorated C-Doped ZnO Nanotaper Photoanodes for Solar Cells Applications

NANO ◽  
2019 ◽  
Vol 14 (01) ◽  
pp. 1950012 ◽  
Author(s):  
Tanmoy Majumder ◽  
Saurab Dhar ◽  
Pinak Chakraborty ◽  
Kamalesh Debnath ◽  
Suvra Prakash Mondal
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Graphene Quantum Dots ◽  
Visible Spectrum ◽  
Visible Absorption ◽  
Photovoltaic Properties ◽  
Doped Graphene ◽  
Doped Zno ◽  
Co Doped

Sulfur and nitrogen co-doped graphene quantum dots (SNGQDs) were synthesized using a hydrothermal method. The doping of S, N atoms and chemical bonding in SNGQDs has been investigated by XPS measurements. Our as-grown SNGQDs showed strong UV (wavelength [Formula: see text]261–341[Formula: see text]nm) and visible absorption (wavelength [Formula: see text]261–341[Formula: see text]nm) and demonstrated excitation-dependent photoemission in visible spectrum. Photoelectrochemical and photovoltaic properties of SNGQDs sensitized carbon-doped ZnO nanotaper (C-ZnO NT) photoanodes has been studied in detail. SNGQD sensitized photoanodes demonstrated superior photoconversion efficiency ([Formula: see text]1.46% and incident-photon-to-current conversion efficiency (IPCE) [Formula: see text]92.48% at 340[Formula: see text]nm. Quantum dot sensitized solar cells (QDSSCs) has been fabricated using SNGQDs sensitized C-ZnO NT photoandoes and demonstrated maximum power conversion efficiency ([Formula: see text]0.59%.

Mn, B, N Co-Doped Graphene Quantum Dots for Fluorescence Sensing and Biological Imaging

2021 ◽  
Author(s):  
Bingyang Li ◽  
Xiao Xiao ◽  
Menglei Hu ◽  
Yanxin Wang ◽  
Yiheng Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Biological Imaging ◽  
Fluorescence Sensing ◽  
Doped Graphene ◽  
Co Doped
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