Effect of thickness, bandgap, and carrier concentration on the basic parameters of Cu₂O nanostructures photovoltaics: numerical simulation study

Influence of band gap and carrier concentration on ZnO/CuO solar cells performance

“…The performance of the simulated devices shows dramatically improving from about 20% to 24% with bang gap increasing from 3.1 to 3.25 eV then have stability with further band gap value increasing. This behaviour is resultant from other solar basic parameters [26] . about 38.1 to about 37.9 mA/cm 2 with growing of carrier concentration may be attributed to increase of the recombination rate than the generation rate of electronhole pairs.…”

“…The values of the J sc and the V oc decrease from about 38.1 mA/cm 2 and 0.802 V to about 37.9 mA/cm 2 and 0.801 V, respectively with carrier concentration increasing and remaining constant with concentration above 10 20 cm -3 . The action of J sc and V oc values may be attributed to built-in potential which is full completed and therefore the collection rate of the charge carrier become constant resulting stability of such values [26,27] .…”

“…On contrast, both FF and η values increasing dramatically with carriers' concentrations increasing from about 76 % and 23.2 % to about 81.5% and 24.7%, respectively and then become stable with further concentrations increasing. Such behavior of FF could be explained from its equation where their values are inverse proportional to the values of J sc and V oc as following [26] :…”

“…The shape of η values could be clarified from the relation among the basic parameters of solar cell devices as exhibited in the following equation [26] : This result could be described as the increasing of band gap value resulting in more light will successfully path through the device junction and therefore more photogenerated electron-hole pairs will be produced [26] . The V oc of simulated devices have a Gaussian curve with value of 0.84 V as a maximum at about 3.28 eV of band gap of window layer.…”

Numerical Analysis of CsSnGeI<sub>3</sub> Perovskite Solar Cells Using SCAPS-1D

“…The effect of band gap on the various solar cell characteristics has been examined since the band gap of a perovskite absorber is a significant parameter [52,53]. In this study the band gap is adjusted from 1.2eV to 2.0eV.…”