Chint New Energy Technology Co., Ltd.

Wei-Chih Hsu

Mingzhang Feng

Sheng He

Some embodiments of the present disclosure provide an N-type TOPCon cell with double-sided aluminum paste electrodes, and a preparation method therefor. The front side of the cell is provided with a front-side silver main grid and a front-side aluminum fine grid, and the back side is provided with a back-side silver main grid and a back-side aluminum fine grid. The method for preparing the cell includes: texturing→B diffusion→BSG removal→alkali polishing→depositing a tunnel oxide layer and a polysilicon layer on a back side of a substrate by means of LPCVD→P diffusion on the back side→PSG removal→plating removal→deposition of an AlOpreparatory layer and a first SiNHpreparatory layer on the front side→deposition of a second preparatory layer SiNHon the back side→UV laser ablation on the front side of the substrate and the back side of the substrate→screen printing.

N-type TOPCon cell with double-sided aluminum paste electrodes, and preparation method for preparing N-type TOPCon cell with double-sided aluminum paste electrodes

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Zhejiang, China

Wei-Chih Hsu