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公开(公告)号：US20200058806A1
公开(公告)日：2020-02-20
申请号：US16348510
申请日：2017-11-09
IPC分类号： H01L31/0216 , H01L31/0224 , H01L31/068 , H01L31/18
摘要： A monofacial or bifacial crystalline solar cell, on the front face of which over the entire area a first surface passivation layer is arranged directly on the semiconductor interface and above this a first optically opaque, electrically conductive material is arranged in first lateral regions as a front face contact, and a first optically transparent, electrically conductive material is arranged exclusively in second lateral regions. The first optically transparent, electrically conductive material is electrically conductively connected to the front face contact and to a first region of the semiconductor material of the solar cell. The method provides for application of the first optically transparent, electrically conductive material only after the first optically opaque, electrically conductive material has been applied, in such a way that firing of the front face contact is avoided.
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公开(公告)号：US11444211B2
公开(公告)日：2022-09-13
申请号：US16348510
申请日：2017-11-09
IPC分类号： H01L31/0216 , H01L31/0224 , H01L31/18 , H01L31/068 , H01L21/02 , H01L21/285
摘要： A monofacial or bifacial crystalline solar cell, on the front face of which over the entire area a first surface passivation layer is arranged directly on the semiconductor interface and above this a first optically opaque, electrically conductive material is arranged in first lateral regions as a front face contact, and a first optically transparent, electrically conductive material is arranged exclusively in second lateral regions. The first optically transparent, electrically conductive material is electrically conductively connected to the front face contact and to a first region of the semiconductor material of the solar cell. The method provides for application of the first optically transparent, electrically conductive material only after the first optically opaque, electrically conductive material has been applied, in such a way that firing of the front face contact is avoided.
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3.发明授权公开(公告)号：US11024755B2
公开(公告)日：2021-06-01
申请号：US16092850
申请日：2017-04-07
发明人： Giuseppe Citarella , Hans-Peter Sperlich , Gunnar Koehler , Frank Wuensch , Detlef Sontag , Heiko Mehlich , Marcel Koenig , Pierre Papet
IPC分类号： H01L31/18 , H01L31/0747 , H01L31/0352 , H01L31/068 , H01L31/105 , H01L31/0216 , H01L31/0224 , H01L31/0376 , H01L31/20 , C23C16/34 , C23C16/40
摘要： A solar cell with a heterojunction is produced. A first amorphous nano- and/or microcrystalline semiconductor layer is formed on the front face of a crystalline semiconductor substrate to form front face emitter or a front face surface field layer. A second such layer is formed on the rear face of the substrate to form a rear face surface field layer or a rear face emitter. Electrically conductive, transparent front face and rear face electrode layers and a frontal metallic contact layer grid structure are formed. Surface selective frontal PECVD deposition forms an electrically non-conductive, transparent dielectric front face cover layer and with such a thickness to form a closed layer directly on deposition, without additional heat and/or chemical treatment, only on the areas surrounding the frontal contact layer grid structure but not on the frontal contact layer grid structure. Finally, a rear face metallization is formed.
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