Abdelmajid Salhi

TL;DR: In this paper, the results of a comparative analysis to identify abundant, non-toxic binary materials with potential applicability for photovoltaics are presented, based on the materials' bulk properties and a set of environmental, physical, and chemical criteria.

TL;DR: The emission from the most active fumarole at the Solfatara volcano near Naples (Italy) was probed for the presence of CO and CH(4), which found the concentrations to be about 3 ppm and 75 ppm, respectively, while actual detection limits for these molecules are around 1 ppb.

TL;DR: In this paper, the authors investigated the design and growth of compositionally-graded InGaN multiple quantum wells (MQW) based light-emitting diode (LED) without an electron blocking layer (EBL) and showed uniform carrier distribution in the active region, and higher radiative recombination rate for the optimized graded-MQW design.

TL;DR: In this paper, a photonic crystal (PhC) strain-sensitive structure is proposed to realize a force/pressure optical sensor by designing a bulk GaAs/AlGaAs microcavity operating in the wavelength range 1300-1400nm, where the resonant wavelength shifts its spectral position following a linear behavior when a pressure ranging between 0.25Gpa and 5GPa is applied.

TL;DR: In this paper, the temperature dependence of the threshold current of InGaAsSb/AlGaSb compressively strained lasers is investigated by analyzing the spontaneous emission from working laser devices through a window formed in the substrate metallization and by applying high pressures.