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In conventional Cadmium telluride (CdTe) solar cells cadmium sulfide (CdS) layer is used as emitter window, the choice proved to be appropriate because of its large energy band gap 2.42 eV and its lattice parameter fits well with CdTe. The inconvenience of this window is its important absorption coefficient in the bleu region. To surmount this problem one of the suggested solutions is to use a much...
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