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RESEARCH PRODUCT
Optical properties of GaSe, characterization and simulation
J. El HaskouriA. AbounadiA. AlmaggoussiA. RajiraA. BassouA. El Kanounysubject
010302 applied physicsCondensed Matter::Quantum GasesMaterials scienceComputer simulationbusiness.industryBand gapHeterojunction02 engineering and technologyÒptica021001 nanoscience & nanotechnology01 natural sciencesCharacterization (materials science)Attenuation coefficient0103 physical sciencesOptoelectronicsLamellar structure0210 nano-technologybusinessAbsorption (electromagnetic radiation)Refractive indexMaterialsdescription
Abstract The study focuses on structural and optical characterizations and properties of the GaSe lamellar material in one hand and on a numerical simulation of the photovoltaic properties of the ITO/GaSe heterojunction in a second hand. A few layers of GaSe were exfoliated from bulk GaSe on PET substrate. The optical transmission was recorded at room temperature. It shows that GaSe exhibits both indirect and direct band gaps of about 1.92 and 2.2 eV respectively. A value, as high as 104 cm−1, of the absorption coefficient was obtained. The corresponding refractive index has been determined numerically according to the Sellmeier and Cauchy models. The interesting value of absorption shows our sample’s potential to be used as absorber in adapted heterojunction cells. The expected photovoltaic parameters (Jsc, Voc , FF and PCE) were then calculated for a ITO/GaSe heterojunction by using SCAPS software.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 |