N型背接触异质结太阳电池概述  

Review of N-type Back-contact Heterojunction Solar Cells

作　　者：杨振英 卢刚 郑璐 何凤琴 刘英 郗复缓 YANG Zhenying;LU Gang;ZHENG Lu;HE Fengqin;LIU Ying;XI Fuhuan(Qinghai Huanghe Hydropower Development Co.,LTD.,Photovoltaic Industry Technology Branch,Xining 810007,China)

机构地区：[1]青海黄河上游水电开发有限责任公司光伏产业技术分公司,西宁810007

出　　处：《材料导报》2020年第S01期19-21,共3页Materials Reports

摘　　要：在P型晶体硅太阳电池转换效率提升接近极限的情况下,N型晶体硅太阳电池因少子寿命长、光致衰减小、对金属污染的容忍度高等优点,在光伏行业内掀起了研究和产业化的新浪潮。目前研究较多并实现规模化生产的N型电池主要有钝化效果较好、开路电压高的异质结电池(HJT电池)和受光面积大、短路电流高的背接触电池(IBC电池)。而HIBC电池则是将HJT电池和IBC电池的结构优点有机结合的叠加电池,其具有转化效率高、光稳定性好、工艺温度低和可薄片化等特点。HIBC电池目前尚在研发阶段,仍需攻克核心工艺技术;且其生产成本较高,目前产业化应用较少。但其作为新型N型太阳电池,是未来光伏行业高效电池发展的方向和趋势。In the case that the conversion efficiency of P-type crystalline silicon solar cells is approaching the limit,N-type crystalline silicon solar cells have begun to compete in the photovoltaic industry due to their long lifetime,low light-induced degradation,and high tolerance to metal pollution,and be the new wave of industrialization.At present,the N-type cells that have been studied more and achieved large-scale producted are mainly heter ojunction cells(HJT cells)with good passivation effect,high open circuit voltage,and back contact cells(IBC cells)with large light recei-ving areas and high short-circuit current.The HIBC cells are superimposed cells that combines the structural advantages of HJT cells and IBC cells.They have the characteristics of high conversion efficiency,good light stability,low process temperature and thinner.However,since the HIBC cells are still in the research and development stage,they still need to overcome the core process technology;and their production cost is higher,and currently there are few industrial applications.However,as one of the new N-type solar cells,it is the direction and trend of high-efficiency cells development in the photovoltaic industry in the future.

关 键 词：HIBC电池 P型发射结宽度 背表面场宽度和隔离层间隙 掩模板 

分 类 号：TK514[动力工程及工程热物理—热能工程]