P型双面钝化射极与背面电池介绍-材料世界网.PDFVIP

工業材料雜誌 太陽光電技術 357期 特別報導 2016/09 P型雙面鈍化射極與背面電池介紹 The Introduction of P-type Silicon Crystalline Bifacial PERC 陳松裕S.Y. Chen 、林鈺璇Y. H. Lin 工研院綠能所(GEL/ ITRI) 研究員　　　　　 20 14 15% 2026 45% P P P 20 14 SolarWorld ISFH SolarWorld 5~25% P Passivated emitter and rear cells have already been proven that is a useful technology for improving cell efficiency and there are feasibility for mass production. Today, the market share is reach on 15% in Si-based solar cells and ITRPV predicts that it will keep growing up to amazing 45% in 2026. In this paper, we will introduce high-efficiency p-type bifacial PERC solar cells with an industrial typical PERC process flow applying a screen-printed aluminum finger grid on the rear side instead of a full-area aluminum layer. The bifacial PERC solar cells offer several advantages. In particular, reducing the Al paste consumption as using just screen-printing Al finger grid on the rear side, preventing power loss of module by double side generating electricity, and operating in lower temperature due to higher infrared-ray (IR) transparency. Bifacial PERC solar cells are currently investigating by several institutes such as SolarWorld, ISFH, Trina Solar and ITRI since 2014. SolarWorld demonstrated the glass-glass module of bifacial PERC solar cells and showed an increase in annual energy yield between 5% to 25%. It is indicated that p-type bifacial PERC solar cells indeed have potential for high-efficiency solar cells in the future. /Key W