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Ion-implantation offers numerous advantages (i.e., single-side precise control and reproducibility of the dopant, simultaneous SiO passivation during annealing, no phosphosilicate glass formation) for solar cell manufacturing. Canadian Solar Inc. has developed an average efficiency 19.23% blank emitter solar cell (156 mm Cz) process using a high-throughput Varian (Applied Materials) Solion ion-implant...
Silicon based chalcopyrite (with the compounds composition I(B)-III(A)-VI(A)2) hetero-junction solar cells have been reported with the potential of high conversion efficiency theoretically. The hetero-junction solar cell with PNN+ structure is fabricated as: front metal electrodes/ transparent conductive oxide (TCO)/ p-type chalcopyrite layer emitter/ n-type silicon base/ n+ silicon back surface doping/...
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