Title :
Design of antireflection coatings for triple heterojunction AlGaAs-GaAs space solar cells
Author :
Al-Bustani, A. ; Feteha, M.Y.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Central Lancashire, Preston, UK
Abstract :
A major task in future developments of GaAs space solar cells is to increase the power to area ratio. In this work, high performance in a new triple heterojunction AlGaAs-GaAs space solar cell is obtained by applying antireflection coating with optimum thicknesses. The effects of single and double antireflection coatings on the output characteristics are presented. The reflection from the multiple interfaces through the cell itself is taken into consideration in the optimisation calculations. The use of MgF2/ZnS as a double antireflection coating for the cell gives an efficiency of 22.101% at AM0
Keywords :
III-V semiconductors; aluminium compounds; antireflection coatings; gallium arsenide; photovoltaic power systems; semiconductor device models; short-circuit currents; solar cells; space vehicle power plants; 22.101 percent; AM0 efficiency; AlGaAs-GaAs; MgF2-ZnS; MgF2/ZnS; antireflection coatings; double antireflection coatings; fill factor; model; multiple interface reflection; open circuit voltage; optimisation calculations; optimum thickness; output characteristics; power to area ratio; short circuit current density; triple heterojunction AlGaAs-GaAs space solar cells; Coatings; Equations; Extinction coefficients; Gallium arsenide; Heterojunctions; Optical reflection; Optical refraction; Photovoltaic cells; Refractive index; Stability;
Conference_Titel :
High Performance Electron Devices for Microwave and Optoelectronic Applications, 1995. EDMO., IEEE 1995 Workshop on
Conference_Location :
London
Print_ISBN :
0-7803-2537-0
DOI :
10.1109/EDMO.1995.493694
