JP2006319335A - 表面パシベーティッド光起電装置 - Google Patents
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- 239000000758 substrate Substances 0.000 claims abstract description 134
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000004065 semiconductor Substances 0.000 claims abstract description 34
- 238000005036 potential barrier Methods 0.000 claims description 31
- 238000002161 passivation Methods 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 31
- 238000000034 method Methods 0.000 description 25
- 239000002800 charge carrier Substances 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000005684 electric field Effects 0.000 description 9
- 238000005215 recombination Methods 0.000 description 9
- 230000006798 recombination Effects 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
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- 230000005641 tunneling Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 229910021424 microcrystalline silicon Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000000992 sputter etching Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 108091006149 Electron carriers Proteins 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 238000005546 reactive sputtering Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
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- 238000007650 screen-printing Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000007736 thin film deposition technique Methods 0.000 description 1
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Abstract
【解決手段】光電池(12)は、結晶性半導体材料を含むエミッタ層(16)と、エミッタ層(16)に隣接して配置された低濃度ドープ結晶質基板(22)とを含む。低濃度ドープ結晶質基板(22)及びエミッタ層(16)は、反対型にドープされる。光起電装置(10)は、光電池(12)に結合された背面パシベーティッド構造(14)を含む。この構造は、低濃度ドープ結晶質基板(22)に隣接して配置された高濃度ドープ背面電界層(24)を含む。高濃度ドープ背面電界層(24)及び低濃度ドープ結晶質基板(22)は、同種型にドープされ、高濃度ドープ背面電界層(24)のドーピングレベルは、低濃度ドープ結晶質基板(22)のドーピングレベルよりも高い。この構造は、低濃度ドープ結晶質基板(22)に隣接して配置された真性背面パシベーティッド層(26)を含む。
【選択図】 図1
Description
12 光電池
14 背面パシベーティッド構造
16 エミッタ層
18 誘電体層
20 金属コンタクト電極
22 低濃度ドープ結晶質基板
24 高濃度ドープ背面電界層
26 真性背面パシベーティッド層
28 透明導電性酸化物(TCO)層
30 反射性背面コンタクト層
48 正孔
58 電子
Claims (10)
- 光起電装置(10)であって、
光電池(12)と背面パシベーティッド構造(14)とを含み、
前記光電池(12)が、結晶性半導体材料を含むエミッタ層(16)と、
前記エミッタ層(16)に隣接して配置された低濃度ドープ結晶質基板(22)と、を含み、
前記低濃度ドープ結晶質基板(22)及びエミッタ層(16)が反対型にドープされ、前記低濃度ドープ結晶質基板(22)が単結晶又は多結晶半導体材料を含み、
前記背面パシベーティッド構造(14)が前記低濃度ドープ結晶質基板(22)に隣り合うように配置された高濃度ドープ背面電界層(24)を含み、
前記高濃度ドープ背面電界層(24)がドープアモルファス又はドープ微結晶半導体材料を含み、前記高濃度ドープ背面電界層(24)及び低濃度ドープ結晶質基板(22)が同種型にドープされ、また前記高濃度ドープ背面電界層(24)のドーピングレベルが前記低濃度ドープ結晶質基板(22)のドーピングレベルよりも高い、
光起電装置(10)。 - 前記低濃度ドープ結晶質基板(22)に隣接して配置された真性背面パシベーティッド層(26)をさらに含み、
前記真性背面パシベーティッド層(26)がアモルファス又は微結晶半導体材料を含み、また前記真性背面パシベーティッド層(26)が表面パシベーションをもたらすか、或いは前記低濃度ドープ結晶質基板(22)から前記高濃度ドープ背面電界層(24)に移動する電子(58)又は正孔(48)に対するポテンシャル障壁を低下させるか、或いは前記低濃度ドープ結晶質基板(22)内に発生した電子(58)又は正孔(48)が前記高濃度ドープ背面電界層(24)にトンネル現象で通り抜けるのを可能にするか、或いはそれらの組合せを行うように構成された、
請求項1記載の光起電装置(10)。 - 前記真性背面パシベーティッド層(26)の厚さが約1nm〜約30nmの範囲内にある請求項2記載の光起電装置(10)。
- 前記高濃度ドープ背面電界層(24)の活性化エネルギーが約0.08eV〜約1.0eVの範囲内にある、請求項1乃至3のいずれか1項に記載の光起電装置(10)。
- 該光起電装置(10)が光電池を含む請求項1乃至4のいずれか1項に記載の光起電装置(10)。
- 正面及び裏面を有する光起電装置(10)であって、
光電池(12)と背面パシベーティッド構造(14)とを含み、
前記光電池(12)が結晶性半導体材料を含むエミッタ層(16)と前記エミッタ層(16)に隣接して配置された低濃度ドープ結晶質基板(22)とを含み、
前記低濃度ドープ結晶質基板(22)及びエミッタ層(16)が反対型にドープされ、前記低濃度ドープ結晶質基板(22)が単結晶又は多結晶半導体材料を含み、
前記背面パシベーティッド構造(14)が、前記低濃度ドープ結晶質基板(22)に隣接して配置された真性背面パシベーティッド層(26)と、前記真性背面パシベーティッド層(26)に隣接して配置された高濃度ドープ背面電界層(24)と、を含み、
前記真性背面パシベーティッド層(26)がアモルファス又は微結晶半導体材料を含み、
前記真性背面パシベーティッド層(26)が、表面パシベーションをもたらすか、或いは前記低濃度ドープ結晶質基板(22)から前記高濃度ドープ背面電界層(24)に移動する電子(58)又は正孔(48)に対するポテンシャル障壁を低下させるか、或いはその両方を行うように構成され、
前記高濃度ドープ背面電界層(24)がドープアモルファス又はドープ微結晶半導体材料を含み、
前記高濃度ドープ背面電界層(24)及び低濃度ドープ結晶質基板(22)が同種型にドープされ、前記高濃度ドープ背面電界層(24)のドーピングレベルが前記低濃度ドープ結晶質基板(22)のドーピングレベルよりも高い、
光起電装置(10)。 - 前記真性背面パシベーティッド層(26)が、前記低濃度ドープ結晶質基板(22)内に発生した電子(58)又は正孔(48)が前記高濃度ドープ背面電界層(24)にトンネル現象で通り抜けるのを可能にするように構成される、請求項6記載の光起電装置(10)。
- 前記エミッタ層(16)のドーピングレベルが、約1x1017cm−3〜約1x1021cm−3の範囲内にある、請求項6又は7に記載の光起電装置(10)。
- 前記真性背面パシベーティッド層(26)が、前記低濃度ドープ結晶質基板(22)が前記高濃度ドープ背面電界層(24)と点接触するか又は線接触するか又はその両方で接触するような可変厚さを有する、請求項6乃至8のいずれか1項に記載の光起電装置(10)。
- エミッタ層(16)と結晶質基板とを含む第1の構造と、前記結晶質基板と高濃度ドープ背面電界層(24)とを含む第2の構造とを含み、
前記エミッタ層(16)及び結晶質基板が反対型にドープされかつp−n接合を形成するように配置され、前記エミッタ層(16)が結晶性半導体材料を含み、
前記高濃度ドープ背面電界層(24)がアモルファス又は微結晶半導体材料を含み、前記高濃度ドープ背面電界層(24)が前記結晶質基板と同種型にドープされ、前記高濃度ドープ背面電界層(24)及び結晶質基板がヘテロ接合を形成するように配置され、前記高濃度ドープ背面電界層(24)のドーピングレベルが前記結晶質基板のドーピングレベルよりも高い、
装置。
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Also Published As
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JP5193434B2 (ja) | 2013-05-08 |
CN1862840A (zh) | 2006-11-15 |
US7375378B2 (en) | 2008-05-20 |
EP1722419A1 (en) | 2006-11-15 |
CN1862840B (zh) | 2010-11-10 |
US20060255340A1 (en) | 2006-11-16 |
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