公开(公告)号：US20130247957A1

公开(公告)日：2013-09-26

申请号：US13991978

申请日：2011-12-01

申请人： Hiroshi Hashigami ,  Takenori Watabe ,  Mitsuhito Takahashi ,  Shintarou Tsukigata ,  Takashi Murakami ,  Ryo Mitta ,  Yoko Endo ,  Hiroyuki Otsuka

发明人： Hiroshi Hashigami ,  Takenori Watabe ,  Mitsuhito Takahashi ,  Shintarou Tsukigata ,  Takashi Murakami ,  Ryo Mitta ,  Yoko Endo ,  Hiroyuki Otsuka

IPC分类号： H01L31/0224

CPC分类号： H01L31/1804 ,  H01L31/02167 ,  H01L31/022425 ,  H01L31/068 ,  H01L31/1868 ,  Y02E10/547 ,  Y02P70/521

摘要： A solar cell has: an emitter layer formed on a light-receiving-surface side of a crystalline silicon substrate, with a dopant of the opposite conductivity type from the silicon substrate added to the emitter layer, a passivation film formed on the surface of the silicon substrate, an extraction electrode and a collector electrode. The extraction electrode extracts photogenerated charge from the silicon substrate and the collector electrode collects the charge collected at the extraction electrode. The extraction electrode contains a first electrode that consists of a sintered conductive paste. The first electrode, at least, is formed so as to pass through the passivation layer. The collection electrode contains a second electrode that has a higher conductivity than the first electrode. This solar cell reduces contact-resistance losses between the silicon and the electrodes, resistance losses due to electrode resistance, and optical and electrical losses in the emitter layer.

摘要翻译： 太阳能电池具有：形成在晶体硅衬底的受光面侧的发射极层，与添加到发射极层的硅衬底具有相反导电类型的掺杂剂，在该表面上形成钝化膜 硅衬底，引出电极和集电极。 提取电极从硅衬底提取光生电荷，并且集电极收集在提取电极处收集的电荷。 提取电极包含由烧结的导电浆料组成的第一电极。 至少第一电极形成为穿过钝化层。 收集电极含有比第一电极具有更高导电性的第二电极。 该太阳能电池降低硅和电极之间的接触电阻损耗，由于电极电阻引起的电阻损耗以及发射极层中的光学和电损耗。

公开(公告)号：US08859320B2

公开(公告)日：2014-10-14

申请号：US13809077

申请日：2011-07-12

申请人： Ryo Mitta ,  Mitsuhito Takahashi ,  Hiroshi Hashigami ,  Takashi Murakami ,  Shintarou Tsukigata ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Ryo Mitta ,  Mitsuhito Takahashi ,  Hiroshi Hashigami ,  Takashi Murakami ,  Shintarou Tsukigata ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L21/00 ,  H01L31/0216 ,  H01L31/068 ,  H01L31/0224

CPC分类号： H01L31/02168 ,  H01L31/022425 ,  H01L31/068 ,  Y02E10/52 ,  Y02E10/547

摘要： Disclosed in a method that is for producing a solar cell and that is characterized by performing an annealing step on a semiconductor substrate before an electrode-forming step. By means of performing annealing in the above manner, it is possible to improve the electrical characteristics of the solar cell without negatively impacting reliability or outward appearance. As a result, the method can be widely used in methods for producing solar cells having high reliability and electrical characteristics.

摘要翻译： 本发明涉及用于生产太阳能电池的方法，其特征在于在电极形成步骤之前在半导体衬底上进行退火步骤。 通过以上述方式进行退火，可以提高太阳能电池的电气特性，而不会不利地影响可靠性或外观。 结果，该方法可广泛用于制造具有高可靠性和电特性的太阳能电池的方法。

公开(公告)号：US20130171763A1

公开(公告)日：2013-07-04

申请号：US13809077

申请日：2011-07-12

申请人： Ryo Mitta ,  Mitsuhito Takahashi ,  Hiroshi Hashigami ,  Takashi Murakami ,  Shintarou Tsukigata ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Ryo Mitta ,  Mitsuhito Takahashi ,  Hiroshi Hashigami ,  Takashi Murakami ,  Shintarou Tsukigata ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L31/0216

CPC分类号： H01L31/02168 ,  H01L31/022425 ,  H01L31/068 ,  Y02E10/52 ,  Y02E10/547

摘要： Disclosed in a method that is for producing a solar cell and that is characterized by performing an annealing step on a semiconductor substrate before an electrode-forming step. By means of performing annealing in the above manner, it is possible to improve the electrical characteristics of the solar cell without negatively impacting reliability or outward appearance. As a result, the method can be widely used in methods for producing solar cells having high reliability and electrical characteristics.

摘要翻译： 本发明涉及用于生产太阳能电池的方法，其特征在于在电极形成步骤之前在半导体衬底上进行退火步骤。 通过以上述方式进行退火，可以提高太阳能电池的电气特性，而不会不利地影响可靠性或外观。 结果，该方法可广泛用于制造具有高可靠性和电特性的太阳能电池的方法。

公开(公告)号：US10032940B2

公开(公告)日：2018-07-24

申请号：US13496596

申请日：2010-05-24

申请人： Hiroshi Hashigami ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Hiroshi Hashigami ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L31/042 ,  H01L31/18 ,  H01L31/0224 ,  H01L31/0216 ,  H01L31/068

摘要： A solar cell is provided with: a semiconductor substrate having a light-receiving surface and a non-light-receiving surface; a PN junction section formed on the semiconductor substrate; a passivation layer formed on the light-receiving surface and/or the non-light-receiving surface; and power extraction electrodes formed on the light-receiving surface and the non-light-receiving surface. The solar cell is characterized in that the passivation layer includes an aluminum oxide film having a thickness of 40 nm or less. As a result of forming a aluminum oxide film having a predetermined thickness on the surface of the substrate, it is possible to achieve excellent passivation performance and excellent electrical contact between silicon and the electrode by merely firing the conductive paste, which is conventional technology. Furthermore, an annealing step, which has been necessary to achieve the passivation effects of the aluminum oxide film in the past, can be eliminated, thus dramatically reducing costs.

公开(公告)号：US20130255747A1

公开(公告)日：2013-10-03

申请号：US13992015

申请日：2011-12-01

申请人： Hiroshi Hashigami ,  Naoki Ishikawa ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Hiroshi Hashigami ,  Naoki Ishikawa ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L31/0224

CPC分类号： H01L31/022433 ,  H01L31/02167 ,  H01L31/022425 ,  H01L31/068 ,  Y02E10/547

摘要： A solar cell has a passivation film formed on a crystalline silicon substrate that has at least a p-n junction, and an electrode formed by printing and heat-treating a conductive paste. The solar cell has a first electrode comprising an extraction electrode, which extracts photogenerated carriers from the silicon substrate, formed so as to contact the silicon substrate and a second collector electrode, which collects the carriers collected at the extraction electrode, formed so as to contact the first electrode. Other than the point of contact between the first electrode and the second electrode, at least, the second electrode contacts the silicon substrate only partially or not at all. By leaving the passivation film between the collector electrode and the silicon, either completely or partially, the solar cell reduces charge losses at electrode/silicon interfaces, improves the short-circuit current and open voltage, and yields improved characteristics.

摘要翻译： 太阳能电池具有形成在至少具有p-n结的晶体硅衬底上的钝化膜，以及通过印刷和热处理导电膏形成的电极。 所述太阳能电池具有包括提取电极的第一电极，所述第一电极从所述硅衬底提取形成为接触所述硅衬底的光生载流子和收集在所述引出电极处收集的载流子的第二集电极，所述第二集电极形成为接触 第一个电极。 除了第一电极和第二电极之间的接触点之外，至少第二电极仅部分地或者根本不接触硅衬底。 通过将钝化膜完全或部分地放置在集电极和硅之间，太阳能电池降低电极/硅界面处的电荷损失，改善短路电流和开路电压，并产生改善的特性。

公开(公告)号：US09224888B2

公开(公告)日：2015-12-29

申请号：US13992015

申请日：2011-12-01

申请人： Hiroshi Hashigami ,  Naoki Ishikawa ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Hiroshi Hashigami ,  Naoki Ishikawa ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L31/0224 ,  H01L31/068

CPC分类号： H01L31/022433 ,  H01L31/02167 ,  H01L31/022425 ,  H01L31/068 ,  Y02E10/547

摘要： A solar cell has a passivation film formed on a crystalline silicon substrate that has at least a p-n junction, and an electrode formed by printing and heat-treating a conductive paste. The solar cell has a first electrode comprising an extraction electrode, which extracts photogenerated carriers from the silicon substrate, formed so as to contact the silicon substrate and a second collector electrode, which collects the carriers collected at the extraction electrode, formed so as to contact the first electrode. Other than the point of contact between the first electrode and the second electrode, at least, the second electrode contacts the silicon substrate only partially or not at all. By leaving the passivation film between the collector electrode and the silicon, either completely or partially, the solar cell reduces charge losses at electrode/silicon interfaces, improves the short-circuit current and open voltage, and yields improved characteristics.

摘要翻译： 太阳能电池具有形成在至少具有p-n结的晶体硅衬底上的钝化膜，以及通过印刷和热处理导电膏形成的电极。 所述太阳能电池具有包括提取电极的第一电极，所述第一电极从所述硅衬底提取形成为接触所述硅衬底的光生载流子和收集在所述引出电极处收集的载流子的第二集电极，所述第二集电极形成为接触 第一个电极。 除了第一电极和第二电极之间的接触点之外，至少第二电极仅部分地或者根本不接触硅衬底。 通过将钝化膜完全或部分地放置在集电极和硅之间，太阳能电池降低电极/硅界面处的电荷损失，改善短路电流和开路电压，并产生改善的特性。

公开(公告)号：US20120174960A1

公开(公告)日：2012-07-12

申请号：US13496596

申请日：2010-05-24

申请人： Hiroshi Hashigami ,  Takenori Watabe ,  Hiroyuki Otsuka

发明人： Hiroshi Hashigami ,  Takenori Watabe ,  Hiroyuki Otsuka

IPC分类号： H01L31/042 ,  H01L31/18 ,  H01L31/0224

CPC分类号： H01L31/02167 ,  H01L31/022425 ,  H01L31/068 ,  H01L31/1868 ,  Y02E10/547 ,  Y02P70/521

摘要： Disclosed is a solar cell which is provided with: a semiconductor substrate having a light-receiving surface and a non-light-receiving surface; a PN junction section formed on the semiconductor substrate; a passivation layer formed on the light-receiving surface and/or the non-light-receiving surface; and power extraction electrodes formed on the light-receiving surface and the non-light-receiving surface. The solar cell is characterized in that the passivation layer includes an aluminum oxide film having a thickness off 40 nm or less. As a result of forming a aluminum oxide film having a predetermined thickness on the surface of the substrate, it is possible to achieve excellent passivation performance and excellent electrical contact between silicon and the electrode by merely firing the conductive paste, which is conventional technology. Furthermore, an annealing step, which has been necessary to achieve the passivation effects of the aluminum oxide film in the past, can be eliminated, thus dramatically reducing costs.

摘要翻译： 公开了一种太阳能电池，其设置有：具有受光面和非受光面的半导体基板; 形成在所述半导体基板上的PN结部; 形成在受光面和/或非受光面上的钝化层; 以及形成在光接收表面和非光接收表面上的功率提取电极。 该太阳能电池的特征在于，钝化层包括厚度为40nm以下的氧化铝膜。 作为在基板表面上形成具有预定厚度的氧化铝膜的结果，可以通过仅仅烧结传统技术的导电浆料来实现优异的钝化性能和优异的硅与电极之间的电接触。 此外，可以消除实现过去氧化铝膜的钝化效果所必需的退火步骤，从而大大降低成本。