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US08461011B2 Method for fabricating a back contact solar cell 失效
背接触太阳能电池的制造方法

Method for fabricating a back contact solar cell
Abstract:
The present disclosure relates to a method for manufacturing a back electrode-type solar cell. The method for manufacturing a back electrode-type solar cell disclosed herein includes: A method for manufacturing a back electrode-type solar cell, comprising: preparing an n-type crystalline silicon substrate; forming a thermal diffusion control film on a front surface, a back surface and a side surface of the substrate; forming a p-type impurity region by implanting p-type impurity ions onto the back surface of the substrate; patterning the thermal diffusion control film so that the back surface of the substrate is selectively exposed; and forming a high-concentration back field layer (n+) at an exposed region of the back surface of the substrate and a low-concentration front field layer (n−) at the front surface of the substrate by performing a thermal diffusion process, and forming a p+ emitter region by activating the p-type impurity region.
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