Near-infrared light triggered superior photocatalytic activity from MoS2–NaYF4:Yb3+/Er3+ nanocomposites

2016 ◽  
Vol 45 (31) ◽  
pp. 12384-12392 ◽  
Author(s):  
Manjunath Chatti ◽  
Venkata N. K. B. Adusumalli ◽  
Sagar Ganguli ◽  
Venkataramanan Mahalingam
Keyword(s):  
Photocatalytic Activity ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Near Infrared ◽  
Narrow Band ◽  
Optical Material ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Simple Hydrothermal Method

A near infrared (NIR) responsive photocatalyst, composed of a narrow band gap semiconductor (i.e. MoS2) and an optical material possessing upconverting ability (i.e. NaYF4:Yb3+/Er3+) has been successfully prepared via a simple hydrothermal method.

An extremely narrow band gap conjugated polymer for photovoltaic devices covering UV to near-infrared light

2018 ◽  
Vol 158 ◽  
pp. 319-325 ◽  
Author(s):  
Xiaodong Cao ◽  
Junfeng Tong ◽  
Zhicai He ◽  
Mingjing Zhang ◽  
Xiaofang Zhang ◽  
...  
Keyword(s):  
Band Gap ◽  
Conjugated Polymer ◽  
Near Infrared ◽  
Narrow Band ◽  
Infrared Light ◽  
Photovoltaic Devices ◽  
Near Infrared Light

A small bandgap (3E,7E)-3,7-bis(2-oxoindolin-3-ylidene)benzo[1,2-b:4,5-b′]difuran-2,6(3H,7H)-dione (IBDF) based polymer semiconductor for near-infrared organic phototransistors

2017 ◽  
Vol 5 (46) ◽  
pp. 12163-12171 ◽  
Author(s):  
Yinghui He ◽  
Jesse T. E. Quinn ◽  
Dongliang Hou ◽  
Jenner H.L. Ngai ◽  
Yuning Li
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Polymer Semiconductor ◽  
Donor Acceptor ◽  
Small Band

A novel small bandgap donor–acceptor polymer with a very small band gap of 0.95 eV shows promising photoresponse under near infrared light in phototransistors.

Visible and near-infrared light-driven photocatalytic activity of erbium-doped CaTiO3 system

2015 ◽  
Vol 410 ◽  
pp. 19-25 ◽  
Author(s):  
L.M. Lozano-Sánchez ◽  
S. Obregón ◽  
L.A. Díaz-Torres ◽  
Soo-Wohn Lee ◽  
V. Rodríguez-González
Keyword(s):  
Photocatalytic Activity ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Erbium Doped

Photocatalytic Properties of α-Bi2O3 Nanoneedle Array Synthesized by Hydrothermal Method

2011 ◽  
Vol 181-182 ◽  
pp. 332-335 ◽  
Author(s):  
H.Y. Wang ◽  
Y.C. Yang ◽  
L. Le ◽  
Y. Liu ◽  
J.H. Wei ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Narrow Band ◽  
Light Irradiation ◽  
Nanoneedle Array ◽  
Special Morphology ◽  
Array Structures

Pureα-Bi2O3with nanoneedle array structure was synthesized directly by hydrothermal method. The optic absorption of theα-Bi2O3paricles was cut off at ~483 nm and the band gap of theα-Bi2O3was estimated to be 2.57 eV. The photocatalytic activity of theα-Bi2O3samples was higher than TiO2under a visible light irradiation. As a conclusion, relative narrow band gap ofα-Bi2O3nanoneedle array compared to anatase and the special morphology of nanoneedle array structures may improve the photocatalytic activity in visible light irradiation.

Single red emission from upconverting ZnGa2O4:Yb,Er nanoparticles co-doped by Cr3+

2020 ◽  
Vol 8 (19) ◽  
pp. 6370-6379 ◽  
Author(s):  
Bhupendra B. Srivastava ◽  
Santosh K. Gupta ◽  
Yuanbing Mao
Keyword(s):  
Hydrothermal Method ◽  
Near Infrared ◽  
Red Light ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Red Emission ◽  
Co Doped

ZnGa2O4:Yb3+,Er3+,Cr3+ nanoparticles synthesized by a hydrothermal method and further annealing emit bright singular red light under 980 nm excitation and near-infrared light under 254 nm excitation.

Oxygen-Enhanced Upconversion of near Infrared Light from Below the Silicon Band Gap

2019 ◽  
Author(s):  
Timothy Schmidt ◽  
Elham Gholizadeh ◽  
Shyamal Prasad ◽  
Zhi Li Teh ◽  
Thilini Ishwara ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Triplet States ◽  
Near Infrared Light ◽  
Semiconductor Nanocrystal ◽  
Photochemical Processes

<div>Here we demonstrate an upconversion composition using semiconductor nanocrystal sensitizers that employs molecular triplet states below the singlet oxygen energy. We show that, contrary to the usual expectation, the admission of oxygen enhances the intensity of upconverted light and significantly speeds up the photochemical processes involved. Further, we demonstrate photochemical upconversion from below the silicon band gap in the presence of oxygen.</div>

Constructing two-dimensional CuFeSe2@Au heterostructured nanosheets with an amorphous core and a crystalline shell for enhanced near-infrared light water oxidation

Nanoscale ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 2380-2387 ◽  
Author(s):  
Huang Wen ◽  
Hua Li ◽  
Suisui He ◽  
Fengjuan Chen ◽  
Erli Ding ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Oxidation ◽  
Near Infrared ◽  
Light Irradiation ◽  
Infrared Light ◽  
Core Shell ◽  
Two Dimensional ◽  
Near Infrared Light ◽  
Light Water ◽  
Nir Light

The reversed growth of 2D core–shell CuFeSe2@Au heterostructured nanosheets with a crystalline shell and an amorphous core were first prepared and show enhanced photocatalytic activity for water oxidation under NIR light irradiation.

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