8 research outputs found
Effect of Temperature on the Performance of CGS/CIGS Tandem Solar Cell
The CGS and CIGS being promising materials for large scale photovoltaic applications, the effect of
temperature on the electrical parameters of a CGS/CIGS tandem solar cell has been investigated in this
work. The copper gallium diselenide (CGS) and copper indium gallium diselenide (CIGS) structures as topcell and bottom-cell respectively, were numerically simulated under AM1.5G spectral illumination using
the two-dimensional device simulator Silvaco-Atlas. The temperature dependency of the solar cell’s characteristics was investigated in the temperature range from 300 to 400 K at intervals of 20 K. The simulation
results show the density current (Jsc) slightly increases whereas the open-circuit voltage (Voc) and fill factor
(FF), conversion efficiency (ƞ) decreases with the increase in temperature. The tandem cell operating temperature efficiency was found to be (– 0.34 %/K), which is slightly higher than that of CGS solar cell
(– 0.29 %/K), but markedly better than that of CIGS solar cell (– 0.41 %/K)
Fuzzy integrals for combining multiple SVM and histogram features for writer's gender prediction
Long range correlation of preceded pixels relations and application to off‐line signature verification
Differences between transient photoconductivity in a-Se sandwich(bulk) and co-planar(interface) structures
Learning features for offline handwritten signature verification using deep convolutional neural networks
Business process re-engineering & management journal
Magnetorheological elastomers (MRE) are smart materials whose modulus or mechanical performances can be controlled by an external magnetic field. In this chapter, the current research on the MRE materials fabrication, performance characterisation, modelling and applications is reviewed and discussed. Either anistropic or isotropic or MRE materials are fabricated by different curing conditions where magnetic field is applied or not. Anistropic MREs exhibit higher MR effects than isotropic MREs. Both steady-state and dynamic performances were studied through both experimental and theoretical approaches. The modelling approaches were developed to predict mechanical performances of MREs with both simple and complex structures. The sensing capabilities of MREs under different loading conditions were also investigated. The review also includes recent representative MRE applications such as adaptive tuned vibration absorbers and novel force sensors