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发明公开
CN110061072A 一种TBC太阳能电池结构及其制备方法 无效 - 驳回 转让

一种TBC太阳能电池结构及其制备方法
摘要：
本发明的目的在于公开一种TBC太阳能电池结构及其制备方法，与现有技术相比，用P型掺杂的TOPCon结构、N型掺杂的TOPCon结构分别替代IBC电池的P型晶硅掺杂层和N型晶硅掺杂层，提高对N型基体背表面的钝化效果，并降低背面正负副栅线电极金属接触区域的金属复合和接触电阻，有效提高电池光电转换效率；P型掺杂的TOPCon结构与N型掺杂的TOPCon结构之间采用本征TOPCon结构做隔离，有效降低P型掺杂的TOPCon结构与N型掺杂的TOPCon结构之间的反向饱和暗电流，提高电池开路电压，有效控制生产成本，提高生产效率，实现本发明的目的。
摘要（英）：

The present invention aims to provide a TBC solar cell structure and a preparation method thereof. Compared with the prior art, a P-type crystalline silicon doped layer and an N-type crystalline silicon doped layer of an IBC battery are respectively replaced by a P-type doped TOPCon structure and an N-type doped TOPCon structure so that a passivation effect on a rear surface of an N-type substrateis improved, the metal recombination and contact resistance in a metal contact area of positive and negative secondary grating electrodes on the rear surface are reduced, and the photoelectric conversion efficiency of the cell is effectively improved. An intrinsic TOPCon structure is used between the P-type doped TOPCon structure and the N-type doped TOPCon structure for isolation, then the reverse dark saturation current between the P-type doped TOPCon structure and the N-type doped TOPCon structure is effectively reduced; the open-circuit voltage of the cell is increased; the production cost is effectively controlled; the production efficiency is improved; and the purpose of the invention is realized.

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