Highlights
•A recessed structure was used on the GaAs/Si solar cells to reduce the current path.
•The associated series resistance was reduced by a recessed structure.
•The carrier recombination loss was improved due to pyramid-like recessed structure.
In this study, epitaxial layers of GaAs-based solar cells were grown [...]
Banknotes, documents, branded products, and sensitive goods like pharmaceuticals or technical components are often marked to distinguish them from imitations. However, some counterfeiters have learned to copy conventional fluorescent tags. In the journal Angewandte Chemie, Chinese scientists have now introduced a new, exceptional anti-counterfeit ink [...]
2017-10-30meta-author
Optical Gain and Laser Characteristics of InGaN Quantum Wells on Ternary InGaN Substrates
The optical gain and threshold characteristics of InGaN quantum wells (QWs) on ternary InGaN substrate emitting in green and yellow spectral regimes are analyzed. By employing the ternarysubstrates, the material gains were found as ~ 3-5 [...]
Characterization of LT GaAs carrier lifetime in multilayer GaAs epitaxial wafers by the transient reflectivity technique
A methodology for determining the carrier lifetime of LT GaAs buffer layers in GaAs multilayer wafers utilizing the femtosecond transient reflectivity technique is introduced. Experimental results and computer simulations performed as a function of [...]
Light–Output Enhancement of Nano-Roughened GaN Laser Lift-Off Light-Emitting Diodes Formed by ICP Dry Etching
In this paper, we report the fabrication and characteristics of nano-roughened GaN laser lift-off (LLO) light-emitting diodes (LEDs) with different scale surface roughness. The surface roughness of devices was controlled by [...]
2013-03-29meta-author
This paper investigates the hydrogen plasma treatment effects on the interface of Au/CdZnTe contact. Hydrogen plasma with high energy is the smallest and lightest atomic mass, which is easy to enter into the crystal surface to fill the vacancy defects. The Au/CdZnTe samples were treated [...]
