JP2008235604A - 太陽電池の製造方法及びその太陽電池 - Google Patents
太陽電池の製造方法及びその太陽電池 Download PDFInfo
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- JP2008235604A JP2008235604A JP2007073576A JP2007073576A JP2008235604A JP 2008235604 A JP2008235604 A JP 2008235604A JP 2007073576 A JP2007073576 A JP 2007073576A JP 2007073576 A JP2007073576 A JP 2007073576A JP 2008235604 A JP2008235604 A JP 2008235604A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 239000004065 semiconductor Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 26
- 229910021417 amorphous silicon Inorganic materials 0.000 description 25
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 25
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
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- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
【解決手段】本発明によれば、光電変換部の厚み方向において半導体基板に達する分割溝を形成する工程と、分割溝に沿って光電変換部を割断する工程とを備え、分割溝は、光電変換部の外周よりも内側において連続して形成される。
【選択図】図5
Description
これによれば、太陽電池の外周において頂点を形成するためのレーザ光の方向転換を行う必要がない。従って、分割溝形成工程の時間を短縮することができ、太陽電池の生産性を向上することができる。
図2及び図3を用いて本実施形態に係る太陽電池モジュール100の構成について説明する。図2は、本実施形態に係る太陽電池モジュール100の断面図である。図3は、本実施形態に係る太陽電池101の拡大断面図である。なお、図3においては、下方面を太陽電池101の受光面として示している。
本実施形態に係る太陽電池モジュール100の製造方法について説明する。
次に、図面を用いて、本発明の特徴的部分に係る分割溝形成工程について説明する。図5(a)は、円形の太陽電池101(光電変換部10)の裏面に照射されるレーザ光の軌跡を示している。図5(b)は、円形の太陽電池101(光電変換部10)の裏面に形成された分割溝8を示している。
図5(b)に示すように、分割溝8aは、太陽電池101の外周よりも内側において、頂点を有することなく連続して形成されている。従って、分割溝8aは、直線状に形成された直線溝と曲線状に形成された曲線溝とが交互に連結された構成を有する。なお、本実施形態において「頂点」とは、2つの直線が交わる点をいう。
本実施形態に係る太陽電池の製造方法によれば、光電変換部10の厚み方向においてn型単結晶シリコン基板1に達する分割溝8aを形成する工程と、分割溝8aに沿って太陽電池101(光電変換部10)を割断する工程とを備え、分割溝8aは、太陽電池101(光電変換部10)の外周よりも内側において連続して形成される。
本発明は上記の実施形態によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。
Claims (4)
- 半導体基板を含む光電変換部を形成する工程と、
前記光電変換部上に集電電極を形成する工程と、
前記光電変換部の厚み方向において前記半導体基板に達する分割溝を形成する工程と、
前記分割溝に沿って前記光電変換部を割断する工程とを備え、
前記分割溝は、前記光電変換部の外周よりも内側において連続して形成される
ことを特徴とする太陽電池の製造方法。 - 前記分割溝は、頂点を有することなく形成されていることを特徴とする請求項1に記載の太陽電池の製造方法。
- 前記分割溝は、直線溝と曲線溝とから構成されており、
前記曲線溝と前記光電変換部の外周との最短距離は、前記直線溝と前記光電変換部の外周との最短距離よりも小さい
ことを特徴とする請求項1又は2に記載の太陽電池の製造方法。 - 半導体基板を含む光電変換部と、
前記光電変換部上に形成された集電電極とを備え、
前記光電変換部のすべての側面は、前記半導体基板が分割された加工面を含む
ことを特徴とする太陽電池。
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JP2007073576A JP5142565B2 (ja) | 2007-03-20 | 2007-03-20 | 太陽電池の製造方法 |
US12/046,551 US20080230116A1 (en) | 2007-03-20 | 2008-03-12 | Method for manufacturing solar cell, and the solar cell |
EP08250951.4A EP1973168B1 (en) | 2007-03-20 | 2008-03-18 | Method for manufacturing solar cell by fracturing along a dividing groove and the corresponding solar cell |
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JP2007073576A JP5142565B2 (ja) | 2007-03-20 | 2007-03-20 | 太陽電池の製造方法 |
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JP2008235604A true JP2008235604A (ja) | 2008-10-02 |
JP5142565B2 JP5142565B2 (ja) | 2013-02-13 |
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US (1) | US20080230116A1 (ja) |
EP (1) | EP1973168B1 (ja) |
JP (1) | JP5142565B2 (ja) |
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WO2014054600A1 (ja) | 2012-10-02 | 2014-04-10 | 株式会社カネカ | 結晶シリコン太陽電池の製造方法、太陽電池モジュールの製造方法、結晶シリコン太陽電池並びに太陽電池モジュール |
JP2015191969A (ja) * | 2014-03-27 | 2015-11-02 | 株式会社カネカ | 結晶シリコン太陽電池およびその製造方法、太陽電池モジュールの製造方法、集光型太陽電池モジュールの製造方法 |
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US20080230116A1 (en) | 2008-09-25 |
EP1973168A2 (en) | 2008-09-24 |
EP1973168A3 (en) | 2011-11-09 |
EP1973168B1 (en) | 2014-06-04 |
JP5142565B2 (ja) | 2013-02-13 |
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