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This study reports on the p‐type a‐Si:H emitter layer of silicon heterojunction (Si‐HJ) solar cells and its contacting scheme. The influence of the ratio between p‐type a‐Si:H emitter width and its contact width is checked on Interdigitated Back Contact (IBC) Si‐HJ both experimentally and by 2D modelling. A low emitter contact fraction value is found to be detrimental to the IBC Si‐HJ cells efficiency...
In this work, we present our progress in contacting both doped and undoped a‐Si:H layers using a LASER tool and show some applications for three different HJ solar cell designs: standard (p‐type), rear emitter (n‐type) and back contact (n‐type). First, we have fabricated 25 cm2 standard and rear emitter double heterojunction (DHJ) solar cells on planar 1‐5 Ω.cm n‐type FZ c‐Si wafers using intrinsic...
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