发明名称 |
METHOD FOR THE CONTACT SEPARATION OF ELECTRICALLY-CONDUCTING LAYERS ON THE BACK CONTACTS OF SOLAR CELLS AND CORRESPONDING SOLAR CELL |
摘要 |
A method for fabricating a solar cell including a semiconductor substrate is proposed where electrical contacting is made on the back side of the semiconductor substrate. The back side of the semiconductor substrate has locally doped regions. The adjacent regions exhibit different doping from the region. The two regions are initially coated with electrically conductive material over the entire area. So that the conductive material does not short-circuit the solar cell, the two regions are covered with a thin electrically insulating layer at least at the region boundaries. The electrically conductive layer is separated by applying an etch barrier layer over the entire surface which is then removed free from masking and selectively e.g. by laser ablation, locally above the insulating layer. The conductive layer is locally removed in the area of the openings of the etch barrier layer by subsequent action of an etching solution. |
申请公布号 |
US2014087515(A1) |
申请公布日期 |
2014.03.27 |
申请号 |
US201314090739 |
申请日期 |
2013.11.26 |
申请人 |
INSTITUT FUER SOLARENERGIEFORSCHUNG GMBH |
发明人 |
TEPPE ANDREAS;ENGELHART PETER;MUELLER JOERG |
分类号 |
H01L31/18;H01L31/0224;H01L31/068 |
主分类号 |
H01L31/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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