Study of Efficiencies CdTe/CdS Photovoltaic Solar Cell According to Electrical Properties by Scaps Simulation
Serigne Massamba Seck, Elhadji Ndiouga Ndiaye, Modou Fall, S. Charvet
Abstract
The photovoltaic performance (efficiency η) of an ITO/CdS/CdTe structure cell is studied in this article according to its electrical properties. The study is carried out by simulation with SCAPS (Solar Cell Capacitance Simulator) whose mathematical model is based on solving the equations of Poisson and continuity of electrons and holes. An electrical conversion efficiency of 23.58% is obtained by optimizing the mobility of the electrons (100 cm2/Vs), that of the holes (25 cm2/Vs), the density of electrons (1015 cm-3), the density of the effective states in the conduction band (7.9 × 1017 cm-3) and the electronic affinity (3.85 eV) of the CdTe absorbent layer.
Topics & Concepts
Cadmium telluride photovoltaicsElectronMaterials scienceSolar cellPhotovoltaic systemCapacitanceOptoelectronicsEnergy conversion efficiencyConduction bandTheory of solar cellsSolar cell efficiencyPhysicsElectrodeElectrical engineeringChemistryPhysical chemistryEngineeringQuantum mechanicsChalcogenide Semiconductor Thin Filmssolar cell performance optimizationSilicon and Solar Cell Technologies