The effect of oxygen, which is unintentionally incorporated into AlGaAs films during epitaxial growth, on AlGaAs solar cell characteristics is investigated using molecular-beam epitaxy. It is found that oxygen concentration strongly influences minority-carrier diffusion length and that solar cell efficiency greatly decreases as oxygen concentration increases. A model to describe the effect of oxygen on solar cell characteristics is suggested.
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Amano et al. (1988) studied this question.
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