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16.5% total area efficiency on a monolithic 1.09m2 module sets a new record, increased from the previous 15.7%, for commercial-size CIGS-based modules. The film property optimization on the absorber, buffer, and window layers, and in addition, the dead area reduction resulted in the improvement in VocxJsc and FF. More Ga incorporated into the absorber layer enhanced bandgap and back surface field,...
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