Enhanced photoluminescence and photoactivity of plasmon sensitized nSiNWs/TiO2 heterostructures

2014 ◽  
Vol 16 (33) ◽  
pp. 17786-17791 ◽  
Author(s):  
Sandeep G. Yenchalwar ◽  
Vedi Kuyil Azhagan ◽  
Manjusha V. Shelke
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Band Gap ◽  
Surface Plasmons ◽  
Field Effect ◽  
Near Field ◽  
Enhanced Photoluminescence ◽  
Near Field Effect

nSiNWs/TiO2 exhibit improved optical properties due to the surface plasmons of AuNPs, where band gap emission increases at the expense of defect radiation and higher photocurrent as a result of the near field effect combined with subsequent plasmonic energy transfer.

Near field effect in nonlinear optics of surfaces

1996 ◽  
Author(s):  
Oleg N. Gadomsky ◽  
I. V. Gadomskaya ◽  
S. V. Emelyanov
Keyword(s):  
Nonlinear Optics ◽  
Field Effect ◽  
Near Field ◽  
Near Field Effect

The near-field effect in a system of two-level dipole particles

2000 ◽  
Vol 67 (3) ◽  
pp. 517-522 ◽  
Author(s):  
O. N. Gadomskii ◽  
Yu. Yu. Voronov
Keyword(s):  
Field Effect ◽  
Near Field ◽  
Near Field Effect

Near field effect on the evaluation of site attenuation

1989 ◽  
Vol 12 (3) ◽  
pp. 331-339 ◽  
Author(s):  
Horng‐Dow Chuang ◽  
Chi‐Fang Huang
Keyword(s):  
Field Effect ◽  
Near Field ◽  
Near Field Effect

scholarly journals Appearance of efficient luminescence energy transfer in doped orthovanadate nanocrystals

2017 ◽  
Vol 50 (3) ◽  
pp. 787-794 ◽  
Author(s):  
Swati Bishnoi ◽  
G. Swati ◽  
Paramjeet Singh ◽  
V. V. Jaiswal ◽  
Mukesh K. Sahu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
Photoluminescence Intensity ◽  
X Ray Diffraction ◽  
Synthesis Mechanism ◽  
Enhanced Photoluminescence ◽  
Nir Absorption ◽  
Decay Parameters

This paper reports the detailed synthesis mechanism and the structural, morphological and optical characterization of ultraviolet (∼311 nm) excitable samarium doped gadolinium yttrium orthovanadate, (Gd,Y)VO4:Sm3+, nanocrystals. X-ray diffraction and Rietveld refinement studies confirmed that the synthesized samples crystallize in a tetragonal structure withI41/amdspace group. The enhanced photoluminescence intensity of (Gd,Y)VO4:Sm3+compared with the existing YVO4:Sm3+phosphor clearly indicates the significant role of Gd3+ions. This has been attributed to the sensitization of the6PJenergy level of Gd3+ions by energy transfer from orthovanadate (VO43−) ions and subsequent energy trapping by Sm3+ions. The energy transfer from VO43−to Sm3+viaGd3+ions as intermediates and concentration quenching of Gd3+luminescence are discussed in detail. The optical band gap of the as-prepared nanocrystals has been estimated using UV–vis–NIR absorption spectroscopy, which reveals a slightly higher band gap (3.75 eV) for YVO4as compared to GdYVO4(3.50 eV). Furthermore, confocal microcopy, decay parameters and Commission Internationale de l'Eclairage chromatic coordinates have supplemented these studies, which established the suitability of these nanophosphors for achieving spectral conversion in silicon solar cells.

Near-field effect in the optics of a surface

1994 ◽  
Vol 61 (1-2) ◽  
pp. 541-545
Author(s):  
O. N. Gadomskii ◽  
S. V. Emel'yanov
Keyword(s):  
Field Effect ◽  
Near Field ◽  
Near Field Effect

scholarly journals THE TESTING SCHEME FOR STEEL CORROSION IN THE REINFORCED CONCRETE VIA NEAR FIELD EFFECT OF METER-BAND WAVE

2017 ◽  
Vol 66 ◽  
pp. 127-134 ◽  
Author(s):  
Ruiqiang Zhao ◽  
Hong Zhang ◽  
Jianting Zhou ◽  
Leng Liao ◽  
Runchuan Xia
Keyword(s):  
Reinforced Concrete ◽  
Field Effect ◽  
Near Field ◽  
Steel Corrosion ◽  
Testing Scheme ◽  
Near Field Effect

MC Simulation of Radiative Heat Transfer Between Planar Semi-Infinite Media and Nano-Spheres With Near Field Effect

2004 ◽  
Author(s):  
Yong Huang ◽  
Xin-Gang Liang
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Field Effect ◽  
Radiative Heat ◽  
Near Field ◽  
Emissive Power ◽  
Simple Method ◽  
The Difference ◽  
Near Field Effect ◽  
Infinite Media

Based on the principle of electric dipole radiation and the Planck’s spectral distribution of emissive power, the enhancement of thermal radiation between two planar semi-infinite media or two nano-spheres was studied in this paper by the Monte Carlo method. By this simple method, some parameter’s influence on the radiative heat transfer was investigated, such as the distance between two semi-infinite media, the particle’s radius, the distance between two particles and the difference in temperature between two particles, and so on. This solution is not rigorous but simple. The results show that heat transfer can be enhanced by several orders of magnitude for the near field effect. And the radiative heat transfer is decreasing sharply with the increasing of the distance.

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