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2012
Conference Paper
Titel
Fluorescent borate glass superstrates for high efficiency CdTe solar cells
Abstract
Sm 3+-doped barium borate glasses are investigated for their potential as a superstrate for CdTe solar cells. The influence of the Sm 3+ conversion efficiency and the Sm 2O 3 doping level on the short circuit current density of a CdTe solar cell is analyzed. CdTe solar cells with CdS layer thicknesses of 45 and 300 nm are evaluated. A 3.2 mm thick, 2 mol% Sm 2O 3- doped glass superstrate enables a relative increase in the short circuit current density of approximately 1.4% and 2.9% for a 45 and 300 nm CdS buffer layer, respectively, assuming 100% Sm 3+ conversion efficiency.