One-step diffusion method for fabricating a differential...

Semiconductor device manufacturing: process – Making device or circuit responsive to nonelectrical signal – Responsive to electromagnetic radiation

Reexamination Certificate

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C438S542000, C257SE21247

Reexamination Certificate

active

07867809

ABSTRACT:
A one-step diffusion method for fabricating a differential doped solar cell is described. The one-step diffusion method includes the following step. First, a substrate is provided. A doping control layer is formed on the substrate. The doping control layer includes a plurality of openings therein. A doping process is conducted on the substrate to form heavy doping regions under the openings of the doping control layer and light doping regions on the other portion of the substrate

REFERENCES:
patent: 4131488 (1978-12-01), Lesk et al.
patent: 4152824 (1979-05-01), Gonsiorawski
patent: 2004/0112426 (2004-06-01), Hagino
patent: 2009/0142911 (2009-06-01), Asano et al.
patent: 1199754 (2002-04-01), None
patent: WO-2007/082760 (2007-07-01), None

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