Electron–phonon coupling mechanisms of broadband near-infrared emissions from Cr3+ in the Ca3Sc2Si3O12 garnet

2020 ◽  
Vol 22 (18) ◽  
pp. 10343-10350 ◽  
Author(s):  
Zhenwei Jia ◽  
Chenxu Yuan ◽  
Ruiyang Li ◽  
Peng Sun ◽  
Rui Dong ◽  
...  
Keyword(s):  
Near Infrared ◽  
Coupling Effect ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Nir Emission ◽  
Infrared Emissions ◽  
First Time ◽  
Coupling Mechanisms

The electron–phonon coupling effect resulting in broad NIR emission in Ca3Sc2Si3O12:Cr3+ is revealed for the first time.

scholarly journals Enhanced visible and near infrared emissions via Ce3+to Ln3+energy transfer in Ln3+-doped CeF3nanocrystals (Ln = Nd and Sm)

2016 ◽  
Vol 45 (1) ◽  
pp. 78-84 ◽  
Author(s):  
Tuhin Samanta ◽  
Shyam Sarkar ◽  
Venkata. N. K. B. Adusumalli ◽  
Athma E. Praveen ◽  
Venkataramanan Mahalingam
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Colloidal Nanocrystals ◽  
Infrared Emissions ◽  
First Time

We report the enhancement of both visible and near infrared (NIR) emissions from Nd3+ionsviaCe3+sensitization in colloidal nanocrystals for the first time.

Electron–Phonon Coupling Effect on Charge Transfer in Nanostructures

2013 ◽  
Vol 117 (2) ◽  
pp. 850-857 ◽  
Author(s):  
Guangqi Li ◽  
Bijan Movaghar ◽  
Mark A. Ratner
Keyword(s):  
Charge Transfer ◽  
Coupling Effect ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Thermal Interfacial Resistance Reduction Between Metal and Dielectric Materials by Inserting Intermediate Metal Layer

2016 ◽  
Author(s):  
Xiangyu Li ◽  
Wonjun Park ◽  
Yong P. Chen ◽  
Xiulin Ruan
Keyword(s):  
Aluminum Oxide ◽  
Lattice Mismatch ◽  
Coupling Effect ◽  
Metal Layer ◽  
Dielectric Materials ◽  
Dominant Factor ◽  
Phonon Coupling ◽  
Interfacial Resistance ◽  
Oxide Interface ◽  
Electron Phonon Coupling

In this work, we have observed 60% reduction in total interfacial resistance by adding an intermediate metal layer nickel between gold and aluminum oxide. Two temperature model is applied to explain the change of interfacial resistance, including both lattice mismatch with diffuse mismatch model and electron-phonon coupling effect. Simulation result agrees reasonably well with experimental data. Even though interfacial resistance due to electron-phonon coupling effect for Au-aluminum oxide is much larger than that of Ni-aluminum oxide interface, lattice mismatch is still the dominant factor for interfacial resistance.

scholarly journals STUDY OF SUPERCONDUCTING EFFECTS IN TRANSITION METALS BASED BINARY ALLOYS USING PSEUDOPOTENTIAL THEORY

2011 ◽  
Vol 48 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Aditya M. Vora
Keyword(s):  
Transition Metals ◽  
Effective Interaction ◽  
Binary Alloys ◽  
Interaction Strength ◽  
Phonon Coupling ◽  
Pseudopotential Theory ◽  
Electron Phonon Coupling ◽  
Potential Formalism ◽  
First Time ◽  
Coulomb Pseudopotential

STUDY OF SUPERCONDUCTING EFFECTS IN TRANSITION METALS BASED BINARY ALLOYS USING PSEUDOPOTENTIAL THEORYSuperconducting state parameters (SSP) (viz., electron-phonon coupling strength λ, Coulomb pseudopotentialμ*transition temperatureTC, isotope effect exponent α and effective interaction strengthNOV) of transition metals based binary alloys are studied using - for the first time - a potential formalism with a pseudoatom-alloy model. In the study, noticeable influence of various exchange and correlation functions on λ andμ*has been revealed. The SSP results are found to be in a qualitative agreement with the available experimental data.

Oxygen induced strained ZnO nanoparticles: an investigation of Raman scattering and visible photoluminescence

2014 ◽  
Vol 2 (35) ◽  
pp. 7264-7274 ◽  
Author(s):  
Shrikrushna Shivaji Gaikwad ◽  
Ashish Chhaganlal Gandhi ◽  
Swarada D. Pandit ◽  
Jayashree Pant ◽  
Ting-Shan Chan ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Zno Nanoparticles ◽  
Short Range ◽  
Coupling Effect ◽  
Poisson Ratio ◽  
Red Shift ◽  
Phonon Coupling ◽  
Visible Photoluminescence ◽  
Electron Phonon Coupling ◽  
Pl Spectrum

Raman and photoluminescence measurements results reveal a positive Poisson ratio in strained ZnO nanoparticles, signaling the short-range electron–phonon coupling effect and an energy red-shift in the PL spectrum.

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