38 citations · 113 across the 7 of their papers we have counts for
7 papers
Towards highly efficient thin-film solar cells with a graded-bandgap CZTSSe layer
Faiz Ahmad, Akhlesh Lakhtakia, Tom H. Anderson +1
A coupled optoelectronic model was implemented along with the differential evolution algorithm to assess the efficacy of grading the bandgap of the CZTSSe layer for enhancing the p…
Optoelectronic optimization of graded-bandgap thin-film AlGaAs solar cells
Faiz Ahmad, Akhlesh Lakhtakia, Peter B. Monk
An optoelectronic optimization was carried out for an AlGaAs solar cell containing (i) an n-AlGaAs absorber layer with a graded bandgap and (ii) a periodically corrugated Ag backre…
Efficiency enhancement of ultrathin CIGS solar cells by optimal bandgap grading
Faiz Ahmad, Tom H. Anderson, Peter B. Monk +1
The power conversion efficiency of an ultrathin CIGS solar cell was maximized using a coupled optoelectronic model to determine the optimal bandgap grading of the nonhomogeneous CI…
Optimization approach for optical absorption in three-dimensional structures including solar cells
Benjamin J. Civiletti, Tom H. Anderson, Faiz Ahmad +2
The rigorous coupled-wave approach (RCWA) and the differential evolution algorithm (DEA) were coupled in a practicable approach to maximize absorption in optical structures with th…
On optical-absorption peaks in a nonhomogeneous thin-film solar cell with a two-dimensional periodically corrugated metallic backreflector
Faiz Ahmad, Tom H. Anderson, Benjamin J. Civiletti +2
The rigorous coupled wave approach (RCWA) was implemented to investigate optical absorption in a triple-p-i-n-junction amorphous-silicon solar cell with a 2D metallic periodically…
Effects of Planar Periodic Stratified Chiral Nihility Structures on Reflected and Transmitted Powers
Nayyar Abbas Shah, Faiz Ahmad, Aqeel A. Syed +1
Behavior of planar multilayer periodic structures due to plane wave excitation has been studied using the transfer matrix method. Multilayer structure is taken with periodicity two…
Focusing, Power Tunneling and Rejection from Chiral and/or Chiral Nihility/Nihility Metamaterials Layers
Syed Touseef Hussain Shah, Faiz Ahmad, Aqeel A. Syed +1
Focusing of electromagnetic plane wave from a large size paraboloidal reflector, composed of layers of chiral and/or chiral nihility metamaterials, has been studied us- ing Maslov'…