Back contacts to CSS CdS/CdTe solar cells and stability of performances
N Romeo, A Bosio, R Tedeschi, V Canevari - Thin Solid Films, 2000 - Elsevier
High efficiency CdTe/CdS thin film solar cells with a good stability can be obtained if a low
gap, high conductivity p-type semiconductor, such as Sb2Te3, is used as a back contact for
CdTe. However, even though Sb2Te3 is used as a back contact, some cells can exhibit a
low fill factor. This, at first sight, could suggest that the back contact is not the right one. Here
we would like to show that a low fill factor could depend not only on the back contact but also
on the front contact and on the amount of Na-diffusion from the soda lime glass substrate.
gap, high conductivity p-type semiconductor, such as Sb2Te3, is used as a back contact for
CdTe. However, even though Sb2Te3 is used as a back contact, some cells can exhibit a
low fill factor. This, at first sight, could suggest that the back contact is not the right one. Here
we would like to show that a low fill factor could depend not only on the back contact but also
on the front contact and on the amount of Na-diffusion from the soda lime glass substrate.
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