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HL: Fachverband Halbleiterphysik
HL 45: HL Posters III
HL 45.14: Poster
Donnerstag, 4. April 2019, 18:30–21:00, Poster E
A mathematical model for an InGaAs/GaAs based waveguide solar cell showing 36% efficiency — •Bhaskar Singh1 and Daniel Schaadt2 — 1Institute of Energy Research and Physical Technologies, TU Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld — 2Institute of Energy Research and Physical Technologies, TU Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld
The use of a waveguide structure in solar cell device to achieve full trapping of photons is of interest in the field photovoltaics. We designed an In0.2Ga0.8As/GaAs based quantum well solar cell structure, where the In0.2Ga0.8As layer is behaving as a quantum well in the confinement direction while acting as a waveguide in planer direction of the device and calculated the photovoltaic characteristics. The results show that the short-circuit current density of our device increases by 19% leading to an enhancement in the conversion efficiency by 13% with respect to a GaAs p-i-n solar cell without inserted quantum well. For the proposed waveguide solar cell, a total efficiency of 36% under AM1.5G solar illumination is achieved.