Experimental Demonstration of High Efficiency Electron Cyclotron Autoresonance Acceleration

1996 ◽  
Vol 76 (15) ◽  
pp. 2718-2721 ◽  
Author(s):  
M. A. LaPointe ◽  
R. B. Yoder ◽  
Changbiao Wang ◽  
A. K. Ganguly ◽  
J. L. Hirshfield
Keyword(s):  
High Efficiency ◽  
Electron Cyclotron ◽  
Experimental Demonstration

Experimental Demonstration of a High-Efficiency Relativistic Magnetron With Diffraction Output With Spherical Cathode Endcap

2017 ◽  
Vol 45 (2) ◽  
pp. 282-288 ◽  
Author(s):  
Christopher Leach ◽  
Sarita Prasad ◽  
Mikhail I. Fuks ◽  
Jerald Buchenauer ◽  
Jeremy W. McConaha ◽  
...  
Keyword(s):  
High Efficiency ◽  
Experimental Demonstration ◽  
Relativistic Magnetron

scholarly journals Low Temperature (180°C) Growth of Smooth Surface Germanium Epilayers on Silicon Substrates Using Electron Cyclotron Resonance Chemical Vapor Deposition

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Teng-Hsiang Chang ◽  
Chiao Chang ◽  
Yen-Ho Chu ◽  
Chien-Chieh Lee ◽  
Jenq-Yang Chang ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Cyclotron Resonance ◽  
Smooth Surface ◽  
High Efficiency ◽  
Electron Cyclotron Resonance ◽  
Low Cost ◽  
Chemical Vapor ◽  
Electron Cyclotron

This paper describes a new method to grow thin germanium (Ge) epilayers (40 nm) on c-Si substrates at a low growth temperature of 180°C using electron cyclotron resonance chemical vapor deposition (ECR-CVD) process. The full width at half maximum (FWHM) of the Ge (004) in X-ray diffraction pattern and the compressive stain in a Ge epilayer of 683 arcsec and 0.12% can be achieved. Moreover, the Ge/Si interface is observed by transmission electron microscopy to demonstrate the epitaxial growth of Ge on Si and the surface roughness is 0.342 nm. The thin-thickness and smooth surface of Ge epilayer grown on Si in this study is suitable to be a virtual substrate for developing the low cost and high efficiency III-V/Si tandem solar cells in our opinion. Furthermore, the low temperature process can not only decrease costs but can also reduce the restriction of high temperature processes on device manufacturing.

Experimental demonstration of a dispersive spectral splitting concentrator for high efficiency photovoltaics

MRS Advances ◽  
2016 ◽  
Vol 1 (14) ◽  
pp. 949-955 ◽  
Author(s):  
Carlo Maragliano ◽  
Matteo Chiesa ◽  
Marco Stefancich
Keyword(s):  
Solar Cells ◽  
Mass Production ◽  
Large Scale ◽  
High Efficiency ◽  
Low Cost ◽  
Electrical Power ◽  
Optical Element ◽  
Optical Transmittance ◽  
Experimental Demonstration ◽  
Full Spectrum

ABSTRACTWe report the experimental demonstration of a low-cost paradigm for photovoltaic power generation that utilizes a prismatic Fresnel-like lens to simultaneously concentrate and separate sunlight into laterally spaced spectral bands. The optical element is designed using geometric optics and optical dispersion and its performance is simulated with a ray-tracing software. The device, fabricated by injection molding, suitable for large-scale mass production, is experimentally characterized. We report an average optical transmittance above 85% over the VIS-IR range and spectral separation in excellent agreement with our simulations. Finally, the system is tested with a pair of copper indium gallium selenide based solar cells. We demonstrate an increase in peak electrical power output of 160% under outdoor sunlight illumination, corresponding to an increase in power conversion efficiency of 15% relative to single-junction full-spectrum one-sun illumination. Given the ease of manufacturability and the potential of the proposed solution, we project that our design can provide a cost-effective alternative to multi-junction solar cells ready for mass production.

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