JP2014512673A - 向上された青色感度を有する効率的なブラックシリコン光起電装置 - Google Patents
向上された青色感度を有する効率的なブラックシリコン光起電装置 Download PDFInfo
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- 229910021418 black silicon Inorganic materials 0.000 title claims abstract description 180
- 230000035945 sensitivity Effects 0.000 title claims abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 115
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 111
- 239000010703 silicon Substances 0.000 claims abstract description 111
- 239000000758 substrate Substances 0.000 claims abstract description 64
- 238000005530 etching Methods 0.000 claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims abstract description 60
- 239000002184 metal Substances 0.000 claims abstract description 60
- 239000002019 doping agent Substances 0.000 claims abstract description 38
- 239000002086 nanomaterial Substances 0.000 claims abstract description 28
- 229910052709 silver Inorganic materials 0.000 claims abstract description 26
- 239000004332 silver Substances 0.000 claims abstract description 26
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052737 gold Inorganic materials 0.000 claims abstract description 19
- 239000010931 gold Substances 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 113
- 238000000034 method Methods 0.000 claims description 77
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 58
- 230000015572 biosynthetic process Effects 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 16
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000002105 nanoparticle Substances 0.000 claims description 6
- 230000003667 anti-reflective effect Effects 0.000 claims description 5
- 239000002923 metal particle Substances 0.000 claims description 5
- 239000011253 protective coating Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 abstract description 20
- 235000012431 wafers Nutrition 0.000 description 54
- 230000008569 process Effects 0.000 description 32
- 230000006798 recombination Effects 0.000 description 29
- 238000005215 recombination Methods 0.000 description 29
- 239000000463 material Substances 0.000 description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 21
- 230000002829 reductive effect Effects 0.000 description 21
- 238000000576 coating method Methods 0.000 description 19
- 238000002310 reflectometry Methods 0.000 description 17
- 239000000243 solution Substances 0.000 description 16
- 238000013461 design Methods 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 11
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 11
- 239000011148 porous material Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 9
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 229910052698 phosphorus Inorganic materials 0.000 description 8
- 239000011574 phosphorus Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
- 230000003595 spectral effect Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000005360 phosphosilicate glass Substances 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 4
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000007772 electroless plating Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 239000002082 metal nanoparticle Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000010952 in-situ formation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000007704 wet chemistry method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 238000000231 atomic layer deposition Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000000675 plasmon resonance energy transfer Methods 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 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
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/02168—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells the coatings being antireflective or having enhancing optical properties for the solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02363—Special surface textures of the semiconductor body itself, e.g. textured active layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/028—Inorganic materials including, apart from doping material or other impurities, only elements of Group IV of the Periodic System
- H01L31/0284—Inorganic materials including, apart from doping material or other impurities, only elements of Group IV of the Periodic System comprising porous silicon as part of the active layer(s)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
- H01L31/1868—Passivation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
Description
米国政府は、米国エネルギー省と、再生可能エネルギー国立研究所(National Renewable Energy Laboratory)の管理運営者であるアライアンス フォー サステイナブル エナジー リミテッド ライアビリティ カンパニー(Alliance for Sustainable Energy, LLC)との契約第DE−AC36−08GO28308号に基づいて、この発明に権利を持っている。
Claims (28)
- シリコン基板、
前記シリコン基板の面上の、少なくとも90Ω/□のシート抵抗を提供するドーパントレベルを有するエミッタ層、および
前記エミッタ層上に設けられ、ブラックシリコンを備える無反射性表面
を含む、向上された青色感度を有する光起電装置。 - 前記エミッタ層が90Ω/□〜170Ω/□の範囲のシート抵抗を有する請求項1記載の光起電装置。
- 前記ブラックシリコンが65nm〜200nmの範囲の横構造寸法を有する請求項1記載の光起電装置。
- 前記横構造寸法が、ブラックシリコンの孔の直径またはブラックシリコンのピラーの外径である請求項3記載の光起電装置。
- 前記ブラックシリコンが金を含まない請求項1記載の光起電装置。
- 前記ブラックシリコンが銀または銅を含み、そして、銀または銅が1019cm-3未満のレベルである請求項1記載の光起電装置。
- 前記光起電装置が、前記無反射性表面上の保護層、前記シリコン基板の、前記エミッタ層を有する側とは反対側上の裏面電気接点、および前記保護層を介して前記エミッタ層と接触する前面電気接点をさらに有する太陽電池である請求項1記載の光起電装置。
- 前記保護層が酸化アルミニウムまたは酸化シリコンを含む請求項7記載の光起電装置。
- 裏面と、受光面とする前面とを有するシリコンウェハ、
前記前面の受光面上の、65nmより大きい横構造寸法を有する複数のナノ構造を備えるブラックシリコンの層、および
前記ブラックシリコンの層を通りそしてそれを抜けて、前記前面の受光面内の深さに拡散したドーパントであって、前記ドーパントの最大レベルが3×1021cm-3未満であるドーパントを含むエミッタ
を有する光起電装置。 - 前記ブラックシリコンの層が実質的に再結合性の高い金属粒子を含まない請求項9記載の光起電装置。
- 前記ドーパントのレベルが、前記エミッタが90Ω/□〜170Ω/□のシート抵抗を有するような範囲にある請求項9記載の光起電装置。
- 前記前面の受光面上に、前面接点であって、前記前面接点の底面のゾーンが前記エミッタ中のドーパントレベルを越えるレベルまでトープされている前記前面接点をさらに含む光起電装置であって、前記光起電装置が選択エミッタブラックシリコン装置である請求項11記載の光起電装置。
- 前記横構造寸法が80nm〜150nmの範囲であり、該構造が約500nm未満の深さまたは高さを有する請求項9記載の光起電装置。
- 400nmで約60%より大きい内部量子効率を有する請求項8記載の光起電装置。
- シリコン基板の表面上にブラックシリコンを形成する工程、
ドーパントを前記ブラックシリコン表面中に拡散させることによって前記シリコン基板中にエミッタを形成する工程、
高度にドープされたシリコンのある量を除去するため前記ブラックシリコン表面の外側の層を除去するために前記シリコン基板を処理する工程、
前記ブラックシリコン表面上に表面保護コーティングを形成する工程、および
前記シリコン基板上に前面および裏面の電気接点を取り付ける工程
を含む光起電装置を製造する方法。 - 前記外側の層を除去するための前記シリコン基板の処理の後に、エミッタが少なくとも約90Ω/□のシート抵抗を提供するようなドーパントレベルをもつ請求項15記載の方法。
- 前記外側の層を除去するための前記シリコン基板の処理が、前記ブラックシリコン表面中のナノ構造の横構造寸法を65nm〜200nmの範囲まで増加させることを含む請求項15記載の方法。
- 前記外側の層を除去するための前記シリコン基板の処理が、前記ブラックシリコン表面を一定の時間、TMAH、KOH,NaOH、HFおよびHNO3のうちの少なくとも1つを用いてエッチングすることを含む請求項15記載の方法。
- エッチング時間が少なくとも約10秒である請求項18記載の方法。
- 前記シリコン基板の表面上にブラックシリコンを形成する工程がメタルアシストエッチングを含む請求項15記載の方法。
- 前記メタルアシストエッチングが、再結合性が高くない金属から形成されるナノ粒子を用いて行われる請求項20記載の方法。
- 前記メタルアシストエッチングが銀または銅のナノ粒子を用いて行われる請求項21記載の方法
- シリコン基板の表面上にナノ構造を備えるブラックシリコン層を形成する工程、
ナノ構造の横構造寸法を増加させるため前記ブラックシリコン層の外側部分を除去するために前記シリコン基板の表面を処理する工程、
ドーパントを前記ブラックシリコン層中に拡散させることによって前記シリコン基板中にエミッタを形成する工程、および
前記ブラックシリコン層上に表面保護コーティングを形成する工程、
を含む光起電装置を製造する方法。 - 前記外側部分を除去するための前記シリコン基板の表面の処理が、TMAH、KOH,NaOH、HFおよびHNO3のうちの少なくとも1つを含む溶液を用いたエッチングを含む請求項23記載の方法。
- 前記外側部分を除去するための前記シリコン基板の表面の処理が、前記ブラックシリコン層中のナノ構造の平均横構造寸法を65nm〜200nmの範囲まで増加させることを含む請求項23記載の方法。
- 前期ブラックシリコン層の形成が、銀または銅のナノ粒子を用いたメタルアシストエッチングを含む請求項23記載の方法。
- 前期エミッタが、少なくとも約90Ω/□のシート抵抗を提供するようなドーパントレベルをもつ請求項23記載の方法。
- シリコンウェハの表面上にブラックシリコンを形成する工程、および
ドーパントを前記ブラックシリコン中に拡散させることを含む、前記シリコンウェハの表面中にエミッタを形成する工程、
を含む光起電装置を製造する方法であって、前記ブラックシリコンの形成が、前記ブラックシリコン中のナノ構造の平均横構造寸法を65nm〜200nmの範囲まで増加させることを含み、そして
前記エミッタが、少なくとも約90Ω/□のシート抵抗を提供するようなドーパントレベルをもつ光起電装置を製造する方法。
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Also Published As
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US20220123158A1 (en) | 2022-04-21 |
CN110289320A (zh) | 2019-09-27 |
CN103283001A (zh) | 2013-09-04 |
CA2815764A1 (en) | 2012-09-13 |
EP2684210A4 (en) | 2014-08-20 |
WO2012121706A1 (en) | 2012-09-13 |
US20130340824A1 (en) | 2013-12-26 |
US11251318B2 (en) | 2022-02-15 |
EP2684210A1 (en) | 2014-01-15 |
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