JP2016529707A - 太陽電池用シリコン基板及びその製造方法 - Google Patents
太陽電池用シリコン基板及びその製造方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 181
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 162
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 162
- 239000010703 silicon Substances 0.000 title claims abstract description 162
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000010894 electron beam technology Methods 0.000 claims abstract description 73
- 238000000151 deposition Methods 0.000 claims description 25
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 238000007740 vapor deposition Methods 0.000 claims description 10
- 230000005684 electric field Effects 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 238000001552 radio frequency sputter deposition Methods 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 description 16
- 230000005355 Hall effect Effects 0.000 description 14
- 238000005259 measurement Methods 0.000 description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 238000002310 reflectometry Methods 0.000 description 9
- 239000010409 thin film Substances 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 7
- 239000011787 zinc oxide Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910021424 microcrystalline silicon Inorganic materials 0.000 description 2
- 238000004549 pulsed laser deposition Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
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- H01L31/02363—Special surface textures of the semiconductor body itself, e.g. textured active layers
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Abstract
Description
p型シリコン基板に、食刻法を用いて、マイクロワイヤーの高さ(h)が約0.7μm、マイクロワイヤーの間の間隔(s)が6μm、マイクロワイヤーの幅(w)が2、4、6μmであるマイクロワイヤーをそれぞれ形成した後、n型不純物をドープしてp−n接合を成すシリコン基板を製造し、前記シリコン基板のn型不純物をドープしなかったp型シリコン基板の裏面にアルミニウムをドープした。
前記マイクロワイヤー構造の太陽電池用シリコン基板製造で製造されたマイクロワイヤーの幅(w)が2、4、6μmである太陽電池用シリコン基板に、DC2keVの電子ビームを60、180、300、420秒間それぞれ照射した。
前記マイクロワイヤー構造の太陽電池用シリコン基板製造で製造されたマイクロワイヤーの幅(w)が2、4、6μmである太陽電池用シリコン基板にDC3keVの電子ビームを60、180、300、420秒間それぞれ照射した。
1.ホール効果測定
(1)評価方法
ホール効果は電流の直角方向に磁界を加えたとき、電流と磁界に対して直角方向に起電力が発生する現象で、電子ビーム照射時間によるキャリア密度、移動性及び抵抗力を示したものである。
図9〜図11はマイクロワイヤーの高さ0.7μm、幅2〜6μm、マイクロワイヤーの間隔6μmのマイクロワイヤー構造を持つシリコン基板の2KeVの電子ビームを照射した時間によるホール効果測定結果を示したグラフで、図9は幅2μm、図10は幅4μm、図11は幅6μmのホール効果測定結果を示したグラフである。
(1)評価方法
分光光度計によって分子ごとに光を最大に吸収する波長を測定するもので、反射率値は%単位で示し、平均値は波長の全体値である300〜1800nmの反射率値を平均した値である。
図15〜図17はマイクロワイヤーの高さ0.7μm、幅2〜6μm、マイクロワイヤーの間隔6μmのマイクロワイヤー構造を持つシリコン基板の2KeVの電子ビームの照射による反射率を示したグラフで、図15は幅2μm、図16は幅4μm、図17は幅6μmの反射率を示したグラフである。
110 アルミニウム裏面電界
120 P型シリコン基板
130 n型不純物
200 AZO
h マイクロワイヤー高さ
S マイクロワイヤー間の間隔
W マイクロワイヤーの幅
Claims (13)
- マイクロワイヤー構造の太陽電池用シリコン基板であって、
前記マイクロワイヤー構造のシリコン基板上にAZOを蒸着して前記マイクロワイヤーの間を前記AZOでギャップ充填し、電子ビームを照射することを特徴とする、太陽電池用シリコン基板。 - 前記シリコン基板は、p型シリコン基板にn型不純物をドープしてp−n接合を形成してなされたことを特徴とする、請求項1に記載の太陽電池用シリコン基板。
- 前記シリコン基板のp層にアルミニウムをドープしてアルミニウム裏面電界が形成されたことを特徴とする、請求項1または2に記載の太陽電池用シリコン基板。
- 前記シリコン基板のマイクロワイヤーの高さが0.5〜1.0μm、幅が1.5〜6μm、マイクロワイヤーの間の間隔が2〜6μmであることを特徴とする、請求項1に記載の太陽電池用シリコン基板。
- 前記AZOは0.2〜1.0μmの厚さで蒸着形成されることを特徴とする、請求項1に記載の太陽電池用シリコン基板。
- 太陽電池用シリコン基板の製造方法であって、
平坦なベース上面に所定間隔でマイクロワイヤーが突設されているシリコン基板を製造するマイクロ構造シリコン基板製造段階;
前記マイクロ構造シリコン基板にAZOを蒸着して前記マイクロワイヤーの間をギャップ充填するギャップ充填段階;及び
前記マイクロワイヤーの間をギャップ充填したシリコン基板に電子ビームを照射する電子ビーム照射段階;を含むことを特徴とする、太陽電池用シリコン基板製造方法。 - 前記マイクロ構造シリコン基板のマイクロワイヤーは食刻法によって製造されることを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記マイクロ構造シリコン基板は、p型シリコン基板とn型シリコン基板がp−n接合を形成して製造することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記マイクロ構造シリコン基板のp層にアルミニウムをドープしてアルミニウム裏面電界を形成して製造することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記マイクロ構造シリコン基板のマイクロワイヤーの高さが0.5〜1.0μm、幅が1.5〜6μm、マイクロワイヤーの間の間隔が2〜6μmであるように製造することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記ギャップ充填段階で、マイクロ構造シリコン基板にAZOを蒸着する方法としては、DCスパッタリング法、RFスパッタリング法、化学蒸着法、パルスレーザー蒸着法、活性化反応性蒸着法の中で選択されるいずれか一つによって蒸着することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記ギャップ充填段階で蒸着されたAZOは0.2〜1.0μmの厚さで蒸着して製造することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
- 前記電子ビームの強度は1〜4keV、時間は50〜450秒の条件で照射することを特徴とする、請求項6に記載の太陽電池用シリコン基板製造方法。
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2013
- 2013-07-29 KR KR1020130089229A patent/KR20150014058A/ko not_active Application Discontinuation
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2014
- 2014-06-03 JP JP2016531508A patent/JP6209682B2/ja active Active
- 2014-06-03 US US14/908,461 patent/US20160163887A1/en not_active Abandoned
- 2014-06-03 WO PCT/KR2014/004920 patent/WO2015016480A1/ko active Application Filing
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JP6209682B2 (ja) | 2017-10-04 |
WO2015016480A1 (ko) | 2015-02-05 |
US20160163887A1 (en) | 2016-06-09 |
KR20150014058A (ko) | 2015-02-06 |
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