Cu2O; metal oxide; numerical simulation; TiO2 buffer layer; transparent solar cell; Aluminum-doped zinc oxide; Carrier defects; Defects density; Device parameters; Metal-oxide; Numerical modeling and analysis; Optimal performance; P-type; Transparent solar cells; Engineering (all)
Abstract :
[en] In the present work, titanium dioxide (TiO2) is sandwiched as a buffer layer between n-type aluminum-doped zinc oxide (AZO) and p-type cuprous oxide (Cu2O), increasing the efficiency of metal oxide-based solar cells. The effects of the device parameters such as thicknesses, carrier concentrations, and defect densities were investigated by numerical simulation to obtain optimal performance of Cu2O-based solar cells. Our findings reveal that by the incorporation of TiO2 thin film, the efficiency of the solar cell increases remarkably from 2.54 to 5.02 %. The optimal thicknesses of the Cu2O and TiO2 layers are in the range of 10 μm and 0.1 μm, respectively. We obtained optimal photo-electric conversion efficiency of 10.17 % and open-circuit voltage of 1.35 V while achieving 8.90 mA/cm2 short-circuit current density and 84.12 % fill factor, using structure parameters of 0.2 μm AZO, 0.1 μm TiO2 and 10 μm Cu2O with optimal acceptor-type dopant density in Cu2O of 1E17 cm−3 and donor-type dopant density in TiO2 of 1E18 cm−3.
Disciplines :
Physics
Author, co-author :
Sliti, Naama ; Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM) ; CESAM | Q-MAT | Solid State Physics, Interfaces and Nanostructures, Institute of Physics B5a, Liege, Belgium ; Ecole Nationale Supérieure d’Ingénieurs de Tunis, Université de Tunis, Tunis, Tunisia
Touihri, Saâd ; Ecole Nationale Supérieure d’Ingénieurs de Tunis, Université de Tunis, Tunis, Tunisia
Nguyen, Ngoc Duy ; Université de Liège - ULiège > Département de physique > Physique des solides, interfaces et nanostructures ; Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM)
Language :
English
Title :
Numerical modeling and analysis of AZO/Cu2O transparent solar cell with a TiO2 buffer layer
F.R.S.-FNRS - Fonds de la Recherche Scientifique National Higher Engineering School of Tunis ARES - Académie de Recherche et d'Enseignement Supérieur
Funding text :
The authors would like to thank Prof Stephen J Fonash and his co-worker at the Pennsylvania State University to make available the AMPS-1D program employed in this document.
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