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Wednesday, November 15 • 14:20 - 14:40
Optimization of High Efficiency AlxGa1-xAs/Ga0.47 In0.53 AsyP1-y Bandgraded 2-J Tandem Solar Cell by Varying the Mole Fraction of Tunnel Junction

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The III-V compound material solar cell offers higher efficiency compared to a single layer of semiconductor material cell, and it is also capable of producing approximately twice as much power due to their superior material characteristics of the bandgap energy under the same condition as a single layer cell. In this paper AlGaAs/GaInAsP 2-J tandem solar cell is designed with Ge substrate. By choosing appropriate values of the mole fractions, suitable bandgaps are used in the descending order to design the whole 2-J cell for attaining optimal spectral efficiency. A tunnel junction AlxGa1-xAs is used to reduce the mismatch current between two subcells. Moreover for better efficiency, the tunnel junction is optimized by varying the mole fraction of the tunnel junction material. The overall characteristics of the 2J tandem cell is simulated and analyzed under AM1.5 spectrum.


Wednesday November 15, 2017 14:20 - 14:40
Salon A/B 180 Portugal Cove Rd, St. John's, NL A1B 2N4, Canada