Calculated and measured efficiencies of thin-film shallow-homojunction GaAs solar cells on Ge substrates
- 1 December 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 35 (11) , 875-878
- https://doi.org/10.1063/1.90990
Abstract
By using a simple analytical model for GaAs solar cells with the nu+/p/p+ shallow‐homojunction structure, we have obtained good between compter calculations and experimental data for the external quantum efficiency and AM1 conversion efficiency of thin‐film GaAs cells with different values of + layer thickness grown on Ge substrates. The calculations yield values for material properties of the GaAs layers composing the cells and also permit the optimization of cell design parameters. In addition, the agreement between calculation and experiment demonstrates that the Ge substrates play a passive role. Thus we have succeeded in fabricating efficient thin‐film GaAs solar cells on non‐GaAs substrates.Keywords
This publication has 8 references indexed in Scilit:
- Simplified fabrication of GaAs homojunction solar cells with increased conversion efficienciesApplied Physics Letters, 1978
- The electrical characterization of semi-insulating GaAs: A correlation with mass-spectrographic analysisJournal of Applied Physics, 1977
- Evidence for low surface recombination velocity on n-type InPApplied Physics Letters, 1977
- Concentration-dependent absorption and spontaneous emission of heavily doped GaAsJournal of Applied Physics, 1976
- Concentration dependence of the absorption coefficient for n− and p−type GaAs between 1.3 and 1.6 eVJournal of Applied Physics, 1975
- Optical absorption and photoluminescence studies of thin GaAs layers in GaAs–AlxGa1−xAs double heterostructuresJournal of Applied Physics, 1974
- Variation of minority-carrier diffusion length with carrier concentration in GaAs liquid-phase epitaxial layersJournal of Applied Physics, 1973
- Optical Properties of n-Type GaAs. I. Determination of Hole Diffusion Length from Optical Absorption and Photoluminescence MeasurementsJournal of Applied Physics, 1969