Intense upconversion red emission from Gd-doped NaErF4:Tm-based core/shell/shell nanocrystals under 980 and 800 nm near infrared light excitations

2019 ◽  
Vol 55 (16) ◽  
pp. 2261-2264 ◽  
Author(s):  
Jung Eun Choi ◽  
Donghwan Kim ◽  
Ho Seong Jang
Keyword(s):  
Shell Structure ◽  
Near Infrared ◽  
Infrared Light ◽  
Core Shell ◽  
Near Infrared Light ◽  
Red Emission

Strong upconversion red-emitting Gd-doped NaErF4:Tm-based upconversion nanophosphors (UCNPs) are successfully synthesized by the formation of a core/intermediate shell/active shell structure.

Efficient Broadband Upconversion of Near-Infrared Light in Dye-Sensitized Core/Shell Nanocrystals

2016 ◽  
Vol 4 (11) ◽  
pp. 1760-1766 ◽  
Author(s):  
Guanying Chen ◽  
Wei Shao ◽  
Rashid R. Valiev ◽  
Tymish Y. Ohulchanskyy ◽  
Guang S. He ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Light ◽  
Core Shell ◽  
Near Infrared Light ◽  
Dye Sensitized

Upconverting Near-Infrared Light through Energy Management in Core-Shell-Shell Nanoparticles

2013 ◽  
Vol 52 (50) ◽  
pp. 13419-13423 ◽  
Author(s):  
Hongli Wen ◽  
Hai Zhu ◽  
Xian Chen ◽  
Tak Fu Hung ◽  
Beilei Wang ◽  
...  
Keyword(s):  
Energy Management ◽  
Near Infrared ◽  
Infrared Light ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Near Infrared Light

Multifunctional core–shell upconversion nanoparticles for targeted tumor cells induced by near-infrared light

2013 ◽  
Vol 1 (21) ◽  
pp. 2757 ◽  
Author(s):  
Xiaojun Yang ◽  
Qianqian Xiao ◽  
Caixia Niu ◽  
Nan Jin ◽  
Jin Ouyang ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Near Infrared ◽  
Infrared Light ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Near Infrared Light

scholarly journals [email protected] Core-Shell and Yolk-Shell Nanostructures: Selective Synthesis, Characterization, and Near-Infrared-Mediated Photocatalytic Reduction of Cr(VI)

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Wan-Ni Wang ◽  
Wang Dong ◽  
Chen-Xi Huang ◽  
Bo Liu ◽  
Sheng Cheng ◽  
...  
Keyword(s):  
Near Infrared ◽  
Separation Efficiency ◽  
Solution Process ◽  
Infrared Light ◽  
Core Shell ◽  
Sulfur Source ◽  
Shell Nanoparticles ◽  
Near Infrared Light ◽  
Shell Nanostructures ◽  
Photogenerated Electrons

Constructing near-infrared-light-mediated core-shell nanostructures incorporating upconversion nanoparticles (UCNPs) and semiconductors is of great importance for potential applications in photocatalysis, nano-biomedical engineering, solar cell, etc. In this work, we have demonstrated a two-step solution process to synthesize [email protected] core-shell nanoparticles (CSN). Firstly, a layer of AA-Zn(Cd)[OH]4− composites was coated on UCNPs to form UCNPs@AA-Zn(Cd)[OH]4− composites, which has been converted to [email protected] CSN via sulfidation reaction process using thioacetamide (TAA) as the sulfur source. Moreover, the [email protected] yolk-shell nanoparticles (YSN) have been obtained from the [email protected] CSN after calcination at 400°C, which show significantly photocatalytic activity for reduction of Cr(VI) under near-infrared light. All these can be attributed to the enhanced crystallization degree, resulting in enhanced energy transfer efficiency and separation efficiency of the photogenerated electrons and holes. An alternative strategy is provided in this study for fabrication of UCNP/semiconductor composites for various applications.

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.

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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