WO2009133607A1 - 光起電力装置およびその製造方法 - Google Patents
光起電力装置およびその製造方法 Download PDFInfo
- Publication number
- WO2009133607A1 WO2009133607A1 PCT/JP2008/058277 JP2008058277W WO2009133607A1 WO 2009133607 A1 WO2009133607 A1 WO 2009133607A1 JP 2008058277 W JP2008058277 W JP 2008058277W WO 2009133607 A1 WO2009133607 A1 WO 2009133607A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diffusion layer
- photovoltaic device
- concentration
- forming
- etching
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000009792 diffusion process Methods 0.000 claims abstract description 92
- 239000000758 substrate Substances 0.000 claims abstract description 81
- 238000005530 etching Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 51
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 50
- 229910052710 silicon Inorganic materials 0.000 abstract description 50
- 239000010703 silicon Substances 0.000 abstract description 50
- 239000011148 porous material Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 47
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 6
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 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
- 210000004027 cell Anatomy 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- -1 aluminum and silver Chemical class 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 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
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for 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
-
- 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
- H01L31/0352—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 their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—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 their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
- H01L31/03529—Shape of the potential jump barrier or surface barrier
-
- 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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/06—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers
- H01L31/068—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN homojunction type, e.g. bulk silicon PN homojunction solar cells or thin film polycrystalline silicon PN homojunction solar 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
- 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
Definitions
- the present invention relates to a photovoltaic device and a manufacturing method thereof.
- a textured structure on a solar cell substrate when the substrate is a single crystal silicon (Si) substrate, crystals with an aqueous alkali solution such as sodium hydroxide or potassium hydroxide having a crystal orientation dependency on the etching rate are used.
- An anisotropic etching process using orientation is widely used (see, for example, Patent Document 1). For example, when this anisotropic etching process is performed on a substrate surface having a (100) plane orientation, a pyramidal texture with the (111) plane exposed is formed.
- the anisotropic etching process using an alkaline aqueous solution does not provide a uniform crystal plane orientation for each crystal particle constituting the substrate surface. Since the etching rate of the isotropic etching process varies greatly depending on the crystal plane, a texture structure can be produced only partially. Under such circumstances, there is a problem that there is a limit to the reduction of the reflectance in the case of a polycrystalline silicon substrate.
- the reflectance at a wavelength of 628 nm is about 36% for silicon whose surface is mirror-polished, and about 15% when a (100) plane single crystal silicon substrate is wet-etched. In the case where the crystalline silicon substrate is wet-etched, it is about 27 to 30%.
- mixed acid etching using an etching mask has been proposed as a method for forming a texture structure on the entire surface regardless of crystal plane orientation (see, for example, Patent Document 2).
- a manufacturing method of the etching mask a lithography method used in a semiconductor process, a method in which fine particles having low etching resistance are mixed in a solution of an etching resistant material, and a method of applying to a substrate surface can be used.
- a low-concentration N-type diffusion layer in which a low-concentration N-type impurity is diffused is formed on the entire surface of, for example, a P-type silicon substrate on the side where the texture structure is formed, and the light incident side electrode formation portion is formed.
- a high concentration N type diffusion layer is formed by diffusing a high concentration N type impurity.
- a grid electrode made of a metal such as silver and a bus electrode made of a metal such as silver that collects current from the grid electrode are formed on the light incident side electrode forming portion.
- a photovoltaic device is obtained by forming the back electrode which consists of metals, such as aluminum and silver, in the back surface of a silicon substrate.
- good resistance bonding with the light incident side electrode can be obtained by performing high-concentration diffusion of impurities only in the portion that is bonded to the light incident side electrode such as the grid electrode or the bus electrode.
- high-density diffusion dedicated patterning must be performed. If this high-concentration diffusion-specific patterning is performed, the number of manufacturing steps increases. Therefore, there has been a problem that the manufacturing cost also increases. Therefore, there has been a demand for obtaining a good resistive junction with the light incident side electrode by adding a high concentration diffusion only to the portion to be joined with the light incident side electrode by a simple process without adding a large number of manufacturing processes. .
- the present invention has been made in view of the above, and the formation of the high-concentration diffusion layer formed in the portion to be joined to the light incident side electrode of the photovoltaic device is performed in a simple process without adding a large number of manufacturing processes. It is an object of the present invention to obtain a method of manufacturing a photovoltaic device that can be used. Another object of the present invention is to obtain a photovoltaic device capable of obtaining a good resistive junction with the light incident side electrode.
- a method of manufacturing a photovoltaic device comprises diffusing impurities of a second conductivity type over the entire surface on the light incident surface side of a semiconductor substrate of the first conductivity type.
- an etching resistant film forming step of forming an etching resistant film having etching resistance on the first diffusion layer, and the etching resistant Forming a micropore at a predetermined position in the recess forming region on the film and exposing the first diffusion layer; and forming the recess forming region centering on the exposed position of the first diffusion layer.
- the first diffusion layer having the first concentration is first formed on the substrate surface, the etching resistant film is formed, and the fine opening for forming the texture structure in the region other than the electrode formation region. Since a recess is formed around the opening by mixed acid etching, and then a second diffusion layer having a second concentration lower than the first concentration is formed on the substrate surface where the recess is formed.
- the second diffusion layer having a low concentration is formed on the texture structure, and a high concentration is formed in the other regions.
- a first diffusion layer can be formed. As a result, the photovoltaic device can be obtained at a low cost by a simple process.
- FIG. 1-1 is a top view of the photovoltaic device.
- FIG. 1-2 is a rear view of the photovoltaic device.
- 1-3 is a cross-sectional view taken along the line AA of FIG. 1-2.
- FIG. 2 is an enlarged cross-sectional view showing a part around the grid electrode of the photovoltaic device shown in FIGS. 1-1 to 1-3.
- FIG. 3-1 is a sectional view schematically showing an example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 1).
- FIG. 3-2 is a sectional view schematically showing an example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 2).
- FIG. 1-1 is a top view of the photovoltaic device.
- FIG. 1-2 is a rear view of the photovoltaic device.
- 1-3 is a cross-sectional view taken along the line AA of FIG. 1-2.
- FIG. 2 is
- FIG. 3-3 is a sectional view schematically showing one example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 3).
- FIG. 3-4 is a sectional view schematically showing an example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (part 4).
- FIG. 3-5 is a sectional view schematically showing one example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 5).
- FIG. 3-6 is a sectional view schematically showing one example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 6).
- FIG. 3-7 is a sectional view schematically showing an example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 7).
- FIG. 3-8 is a sectional view schematically showing one example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 8).
- FIG. 3-9 is a sectional view schematically showing an example of a processing procedure of the manufacturing method of the photovoltaic device according to the first embodiment (No. 9).
- FIG. 4 is a diagram schematically illustrating an example of the configuration of a laser processing apparatus that forms an opening.
- FIG. 5 is a diagram illustrating an example of a configuration of a laser processing apparatus used for forming an opening in the third embodiment.
- Photovoltaic device 101 Silicon substrate 102L Low resistance N-type diffusion layer 102H High resistance N-type diffusion layer 103 Etch-resistant film 104 Micro hole 105a Recess formation area 105b Electrode formation area 106 Recess 109 Antireflection film 110 P + layer 111 Grid electrode 112 Joined portion 113 Bus electrode 121 Back side electrode 122 Back side current collecting electrode 200A, 200B Laser processing device 201 Stage 203 Laser oscillation unit 204 Laser beam 205 Reflecting mirror 206 Beam splitter 207 Aperture 208 Reduction optical system 211, 213 Galvano mirror 212 X axis direction 214 Y-axis direction
- FIGS. 1-1 to 1-3 are diagrams schematically showing an example of the overall configuration of a general photovoltaic device, and FIG. 1-1 is a top view of the photovoltaic device. 2 is a rear view of the photovoltaic device, and FIG. 1-3 is a cross-sectional view taken along the line AA of FIG. 1-2.
- the photovoltaic device 100 includes a P-type silicon substrate 101 as a semiconductor substrate, and an N-type impurity obtained by diffusing N-type impurities formed on one main surface (light-receiving surface) side of the P-type silicon substrate 101.
- a photoelectric conversion layer including a diffusion layer 102 and a P + layer 110 containing a P-type impurity at a higher concentration than the silicon substrate 101 formed on the surface on the other main surface (back surface) side is provided.
- the photovoltaic device 100 includes an antireflection film 109 that prevents reflection of incident light on the light receiving surface of the photoelectric conversion layer, and a light receiving surface for locally collecting electricity generated by the photoelectric conversion layer.
- the grid electrode 111 made of silver or the like provided, the bus electrode 113 made of silver or the like provided almost orthogonally to the grid electrode 111 for taking out the electricity collected by the grid electrode 111, and the photoelectric conversion layer
- the grid electrode 111 is made of a back-side electrode 121 made of aluminum or the like provided on almost the entire back surface of the P-type silicon substrate 101, and silver or the like for collecting electricity generated in the back-side electrode 121.
- a back side collecting electrode 122 is made of a back-side electrode 121 made of aluminum or the like provided on almost the entire back surface of the P-type silicon substrate 101, and silver or the like for collecting electricity generated in the back-side electrode 121.
- FIG. 2 is an enlarged cross-sectional view showing a part around the grid electrode of the photovoltaic device shown in FIGS. 1-1 to 1-3.
- FIG. 2 is a view showing a state in which the periphery of the grid electrode 111 in FIGS. 1-1 to 1-3 is cut out.
- a concave portion forming region 105a in which a texture structure composed of a plurality of concave portions 106 formed of a curved surface is formed, and the photovoltaic device Electrode forming region 105b where light incident side electrodes such as 100 grid electrodes 111 are formed.
- the recess formation region 105 a has a texture structure formed by a plurality of recesses 106 formed at predetermined intervals on the upper surface of the silicon substrate 101, and has a predetermined depth from the upper surface of the silicon substrate 101 including the surface on which the recesses 106 are formed.
- a low-concentration N-type diffusion layer 102L in which N-type impurities are diffused at a low concentration is formed.
- the upper surface portion of the silicon substrate 101 existing between the recesses 106 is recessed with respect to the height of the upper surface of the silicon substrate 101 (the upper surface of the electrode formation region 105b). 2 shows a cross-sectional view, the cross section of the recess 106 in the direction parallel to the substrate surface has a substantially circular shape.
- the concave portion 106 has a bowl shape.
- the light incident side electrode such as the grid electrode 111 has a high concentration N type diffusion in which N type impurities are diffused at a high concentration so that the resistance is lower than that of the low concentration N type diffusion layer 102L. It is formed on the layer 102H through the joint portion 112. Since the structure of the light receiving surface and the back surface of the silicon substrate 101 is the same as that described with reference to FIGS. 1-1 to 1-3, the description thereof is omitted.
- FIGS. 3-1 to 3-9 are cross-sectional views schematically showing an example of the processing procedure of the method for manufacturing the photovoltaic device according to the first embodiment.
- the size shown below is an example.
- a silicon substrate 101 is prepared (FIG. 3-1).
- a P-type polycrystalline silicon substrate that is most frequently used for consumer photovoltaic devices is used.
- the silicon substrate 101 is manufactured by slicing a polycrystalline silicon ingot with a multi-wire saw and removing damage during slicing by wet etching using an acid or alkali solution.
- the thickness of the silicon substrate 101 after removing the damage is 250 ⁇ m, and the dimensions are 150 mm ⁇ 150 mm.
- the silicon substrate 101 after removing the damage is put into a thermal oxidation furnace, heated in an atmosphere of phosphorus (P) as an N-type impurity, and phosphorus is diffused at a high concentration on the surface of the silicon substrate 101 to obtain a high concentration N
- a mold diffusion layer 102H is formed (FIG. 3-2).
- phosphorus oxychloride (POCl 3 ) is used to form a phosphorus atmosphere and is diffused at 840 ° C.
- the high-concentration N-type diffusion layer 102H is formed on the upper surface, the lower surface, and the side surface of the silicon substrate 101.
- the high-concentration N-type diffusion layer 102H on the side surface is removed by etching or the like.
- a film 103 having etching resistance (hereinafter referred to as an etching resistant film) 103 is formed on the high-concentration N-type diffusion layer 102H formed on one main surface (FIG. 3-3).
- a silicon nitride film hereinafter referred to as SiN film
- SiO 2 , SiO silicon oxide
- SiON silicon oxynitride
- SiON amorphous silicon
- Diamond-like carbon film A resin film or the like
- an SiN film having a thickness of 240 nm formed by a plasma CVD (Chemical Vapor Deposition) method is used as the etching resistant film 103.
- the film thickness is 240 nm
- an appropriate film thickness can be selected from the etching conditions at the time of texture / etching and the removability of the SiN film in the subsequent process.
- a fine hole 104 is formed in the recess forming region 105a on the etching resistant film 103 (FIG. 3-4).
- the fine hole 104 is not formed in the electrode forming region 105b where the texture structure is not formed and the light incident side electrode of the photovoltaic device 100 is to be formed.
- the microhole 104 can be formed by a photolithography method or a laser irradiation method used in a semiconductor process. Note that the laser irradiation method does not require complicated processes such as resist coating, exposure / development, etching, and resist removal, which are necessary when forming by photolithography technology, and the fine holes 104 can be formed only by laser irradiation. There is an advantage that the process can be simplified.
- the wavelength of the laser is desirably 700 nm or less. This is due to the following reason. That is, when the wavelength of the laser is larger than 700 nm, the laser does not only form the fine hole 104 in the etching resistant film 103, but deeply penetrates into the high resistance N-type diffusion layer 102H and the silicon substrate 101, In some cases, damage to the silicon substrate 101 becomes deep. Then, even when the recess 106 is formed in the silicon substrate 101 when the recess 106 is formed by etching, which will be described later, there is a possibility that the laser will not be damaged and remain. For this reason, in order to form the recess 106 without damaging the silicon substrate 101, it is desirable to use a laser having a wavelength of 700 nm or less.
- FIG. 4 is a diagram schematically showing an example of the configuration of a laser processing apparatus for forming an opening.
- This laser processing apparatus 200A includes a stage 201 on which a processing target such as a silicon substrate 101 is placed, a laser oscillation unit 203 that outputs laser light 204, a reflecting mirror 205 that guides the laser light 204 to an optical path, and a laser.
- a beam splitter 206 that separates the light 204 into a plurality of laser beams, an aperture 207 that changes the beam shape to a predetermined shape, a reduction optical system 208 that reduces the laser light 204 that has passed through the aperture 207 and irradiates the object to be processed, Is provided.
- the laser beam 204 output from the laser oscillation unit 203 is changed by the reflecting mirror 205, then enlarged by the beam splitter 206 and incident on the aperture 207, and passes through the aperture 207. Thereafter, a predetermined position on the etching resistant film 103 is irradiated by the reduction optical system 208. As a result, a plurality of fine holes 104 are formed in the etching resistant film 103 formed on the silicon substrate 101, and the surface of the underlying silicon substrate 101 is exposed. If the wavelength of the laser when the SiN film is used as the etching resistant film 103 is set to 400 nm or less, a desired fine hole 104 can be easily formed.
- the laser wavelength is larger than 400 nm, the absorption of the laser into the SiN film becomes insufficient, and the shape of the opening, that is, the fine hole 104 may not be sufficiently controlled. If the laser wavelength is 400 nm or less, the laser is sufficiently absorbed by the SiN film, so that the formation of the micropores 104 can be easily controlled, and the micropores 104 having a desired shape can be obtained.
- the wavelength of the laser light becomes 355 nm, which is a wavelength that can be absorbed by the SiN film.
- the depth of focus of the optical system is set to 10 ⁇ m or more.
- the aperture 207 in the laser processing apparatus 200A a metal plate having an opening is used. Since the laser beam 204 that has passed through the aperture 207 is reduced and irradiated onto the object to be processed, the aperture pattern of the aperture 207 may be relatively large. Therefore, as the aperture 207, a metal plate opened by wet etching or sand blasting may be used. A glass mask in which a thin metal pattern such as a chromium film is formed on a glass plate can also be used as the aperture 207. In this case, however, it is necessary to pay attention to the transmittance of the glass and the resistance of the metal thin film. Further, here, when forming the microholes 104 in the etching resistant film 103 in the recess forming region 105a, the fine holes 104 may be provided on the triangular lattice points or on the square lattice points.
- the vicinity of the surface of the silicon substrate 101 including the high-concentration N-type diffusion layer 102H is etched through the fine holes 104 opened in the etching resistant film 103 to form the recesses 106 (FIG. 3-5).
- a concave portion 106 is formed on the surface of the silicon substrate 101 around the fine microscopic holes 104 at a concentric position.
- a mixed solution of hydrofluoric acid and nitric acid is used as an etching solution.
- the mixing ratio is hydrofluoric acid 1: nitric acid 20: water 10.
- the mixing ratio of the etching liquid can be changed to an appropriate mixing ratio depending on the desired etching rate and etching shape.
- etching is performed so that the high-concentration N-type diffusion layer 102H is removed in the recess formation region 105a.
- the silicon substrate 101 is again put into the thermal oxidation furnace and heated in the presence of phosphorus oxychloride (POCl 3 ) vapor. Then, a low concentration N-type diffusion layer 102L in which phosphorus is diffused at a low concentration is formed on the surface of the recess 106 (FIGS. 3-7).
- the diffusion temperature at this time is 840 ° C.
- the electrode forming region 105b is a portion where the high-concentration N-type diffusion layer 102H remains at the time of etching, the resistance remains low even if low-concentration diffusion is performed again from above.
- the inner surface of the recess 106 in the recess formation region 105a is in a state where the high-concentration N-type diffusion layer 102H is removed during etching, but the low-concentration N-type diffusion layer 102L is formed by this diffusion treatment.
- the surface sheet resistance of the high concentration N-type diffusion layer 102H is desirably less than 50 ⁇ / ⁇
- the surface sheet resistance of the low concentration N-type diffusion layer 102L is 50 ⁇ / ⁇ or more and less than 100 ⁇ / ⁇ . Is desirable. This is because, when the surface sheet resistance of the high-concentration N-type diffusion layer 102H is 50 ⁇ / ⁇ or more, the rate at which the photocurrent collected from the recess 106 is converted into Joule heat increases, and the photocurrent This is because the efficiency of taking out is reduced.
- the surface sheet resistance of the low-concentration N-type diffusion layer 102L is less than 50 ⁇ / ⁇ , the efficiency of changing incident light to electricity is reduced, and when it is 100 ⁇ / ⁇ or more, the recess 106 This is because the generated photocurrent is lost as Joule heat until it reaches the light incident side electrode such as the grid electrode.
- an antireflection film 109 made of a SiN film or the like is formed on the cell surface by plasma CVD (FIGS. 3-8).
- the film thickness and refractive index of the antireflection film 109 are set to values that most suppress light reflection. Note that two or more layers having different refractive indexes may be stacked. Further, it may be formed by a different film forming method such as a sputtering method.
- a front electrode (grid electrode 111, bus electrode 113) and a back electrode (back electrode 121, back collector electrode 122) are formed on the front and back surfaces of the silicon substrate 101, respectively (FIG. 3-9).
- a paste mixed with aluminum is formed on the entire surface by screen printing as the back-side electrode 121.
- a paste mixed with silver is formed as a grid electrode 111 (bus electrode 113) in a comb shape by screen printing.
- a baking process is implemented. Note that the paste serving as the base of the grid electrode 111 is formed on the electrode formation region 105b.
- the firing process is performed at 760 ° C. in an air atmosphere.
- the grid electrode 111 penetrates through the antireflection film 109 and contacts the high-concentration N-type diffusion layer 102H at the joint 112.
- the high-concentration N-type diffusion layer 102H can obtain a good resistive junction with the upper electrode (grid electrode 111, bus electrode 113).
- the aluminum of the back electrode 121 is diffused into the silicon substrate 101 by firing, and the P + layer 110 is formed in a predetermined range from the back surface of the silicon substrate 101. As described above, the photovoltaic device 100 is manufactured.
- a low resistance diffusion layer is first formed on the substrate surface, an etching resistant film is formed, and a fine structure for forming a texture structure in a region other than the electrode forming region 105b on the light incident side is formed.
- the hole 104 was opened, and the concave portion 106 was formed around the position where the fine hole 104 was formed by mixed acid etching, and then the high resistance diffusion layer was formed on the substrate surface where the concave portion 106 was formed. Therefore, the low resistance diffusion layer can be formed on the texture structure by adding one step of forming the diffusion layer to the step of forming the texture structure. As a result, the photovoltaic device can be obtained at a low cost by a simple process.
- the photolithography process can be omitted. That is, since a process of forming and patterning a high concentration diffusion dedicated mask is unnecessary, a simpler and less expensive method for manufacturing a photovoltaic device can be realized.
- the electrode forming region 105b a good resistive junction is obtained, and the output characteristics of the photovoltaic device are improved. As a result, there is an effect that a highly efficient photovoltaic device can be obtained by a simple process. Moreover, since the photovoltaic layer manufactured in this way can obtain high conversion efficiency compared with the past, it can implement
- Embodiment 2 shows the high-concentration N-type diffusion layer 102H and the phosphorous glass layer on the low-concentration N-type diffusion layer 102L are formed.
- the extreme outermost surfaces of the high-concentration N-type diffusion layer 102H and the low-concentration N-type diffusion layer 102L may be etched using, for example, a mixed solution of hydrofluoric acid and nitric acid.
- Other processing steps are the same as those described in the first embodiment, and a description thereof will be omitted.
- the outermost surfaces of these diffusion layers 102L and 102H are mixed with hydrofluoric acid and nitric acid. Etching with a mixed acid such as is effective in suppressing the carrier recombination rate in the N-type diffusion layer.
- FIG. 5 is a diagram illustrating an example of a configuration of a laser processing apparatus used for forming an opening in the third embodiment.
- the laser processing apparatus 200B is disposed between a stage 201 on which a processing target such as a silicon substrate 101 is placed, a laser oscillation unit 203 that outputs laser light 204, and the stage 201 and the laser oscillation unit 203.
- the first galvanometer mirror 211 that guides 204 to the optical path while scanning 204 in the X-axis direction 212
- the second galvanometer mirror that guides the laser beam 204 reflected by the first galvanometer mirror 211 to the optical path while scanning in the Y-axis direction 214 213.
- the first and second galvanometer mirrors 211 and 213 are scanned to cause the laser beam 204 condensed in a spot shape to be a predetermined amount of the etching resistant film 103 on the silicon substrate 101.
- the fine holes 104 are formed by irradiating the position.
- the first galvanometer mirror 211 is rotated to scan the laser beam 204 in the X-axis direction 212
- the second galvanometer mirror 213 is rotated to scan the laser beam 204 in the Y-axis direction 214.
- the fine holes 104 can be opened at high speed over the entire area of the silicon substrate 101.
- the scanning frequency in the X-axis direction 212 of the first galvanometer mirror 211. May be set to 50 Hz.
- the scanning speed in the Y-axis direction 214 on the silicon substrate 101 surface is set to 0. .65 mm / sec. In this way, the fine holes 104 having a diameter of 5 ⁇ m can be formed in the etching resistant film 103 in a close-packed arrangement with a pitch of 15 ⁇ m.
- the laser beam 204 can be irradiated by scanning the surface on the etching resistant film 103 to be processed using the first and second galvanometer mirrors 211 and 213. Even if it is not point irradiation, it has the effect that the fine hole 104 can be provided at high speed.
- the case where the P-type silicon substrate 101 is used as the silicon substrate 101 has been described.
- the electromotive force device 100 has the same effect.
- polycrystalline silicon is used as the substrate, the same effect can be obtained by using a single crystal silicon substrate.
- the substrate thickness is 250 ⁇ m here, a substrate that can be self-supported, for example, thinned to about 50 ⁇ m can be used.
- the dimension was described as 150 mm x 150 mm, this is an example, and the same effect can be obtained even if it is larger or smaller than that.
- the silicon substrate has been described as an example of the substrate, the first to third embodiments described above can be applied not only to the silicon substrate but also to all semiconductor substrates.
- the photovoltaic device according to the present invention is useful for a solar cell that generates power using sunlight.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
101 シリコン基板
102L 低抵抗N型拡散層
102H 高抵抗N型拡散層
103 耐エッチング膜
104 微細孔
105a 凹部形成領域
105b 電極形成領域
106 凹部
109 反射防止膜
110 P+層
111 グリッド電極
112 接合部分
113 バス電極
121 裏側電極
122 裏側集電電極
200A,200B レーザ加工装置
201 ステージ
203 レーザ発振部
204 レーザ光
205 反射鏡
206 ビームスプリッタ
207 アパーチャ
208 縮小光学系
211,213 ガルバノミラー
212 X軸方向
214 Y軸方向
最初に、この発明による実施の形態1の光起電力装置の構成を説明する前に、一般的な光起電力装置の全体構成の概要について説明する。図1-1~図1-3は、一般的な光起電力装置の全体構成の一例を模式的に示す図であり、図1-1は光起電力装置の上面図であり、図1-2は光起電力装置の裏面図であり、図1-3は図1-2のA-A断面図である。光起電力装置100は、半導体基板としてのP型シリコン基板101と、このP型シリコン基板101の一方の主面(受光面)側の表面に形成されるN型の不純物を拡散させたN型拡散層102と、他方の主面(裏面)側の表面に形成されるシリコン基板101よりも高濃度にP型の不純物を含んだP+層110と、を含む光電変換層を備える。また、光起電力装置100は、光電変換層の受光面への入射光の反射を防止する反射防止膜109と、光電変換層で発電された電気を局所的に集電するために受光面に設けられる銀などからなるグリッド電極111と、グリッド電極111で集電された電気を取り出すためにグリッド電極111にほぼ直交して設けられる銀などからなるバス電極113と、光電変換層で発電された電気の取り出しと入射光の反射を目的としてP型シリコン基板101の裏面のほぼ全面に設けられたアルミニウムなどからなる裏側電極121と、この裏側電極121に生じた電気を集電する銀などからなる裏側集電電極122と、を備える。
実施の形態1の説明では、図3-7で低濃度N型拡散層102Lを凹部106内に形成した後、高濃度N型拡散層102Hと低濃度N型拡散層102L上のリンガラス層をフッ酸溶液で除去したが、高濃度N型拡散層102Hと低濃度N型拡散層102Lの極最表面をたとえばフッ酸と硝酸の混合液によってエッチングしてもよい。なお、その他の処理工程は、実施の形態1で説明したものと同様であるので、その説明を省略する。
この実施の形態3では、実施の形態1とは異なる方法で開口を形成する場合について説明する。図5は、実施の形態3で開口の形成に使用されるレーザ加工装置の構成の一例を示す図である。このレーザ加工装置200Bは、シリコン基板101などの加工対象を載置するステージ201と、レーザ光204を出力するレーザ発振部203と、ステージ201とレーザ発振部203との間に配置され、レーザ光204をX軸方向212に走査しながら光路に導く第1のガルバノミラー211と、第1のガルバノミラー211で反射したレーザ光204をY軸方向214に走査しながら光路に導く第2のガルバノミラー213と、を備える。
Claims (11)
- 第1の導電型の半導体基板の光の入射面側の全面に第2の導電型の不純物を拡散して、第1の濃度の第1の拡散層を形成する第1の拡散層形成工程と、
前記第1の拡散層上に耐エッチング性を有する耐エッチング膜を形成する耐エッチング膜形成工程と、
前記耐エッチング膜上の凹部形成領域内の所定の位置に微細孔を形成し、前記第1の拡散層を露出させる微細孔形成工程と、
前記第1の拡散層の露出位置を中心に、前記凹部形成領域内で前記第1の拡散層が残存しないように、前記第1の拡散層と前記半導体基板とをエッチングして凹部を形成する凹部形成工程と、
前記凹部を形成する面に、前記第1の濃度よりも低い第2の濃度の第2の導電型の不純物を拡散して、第2の拡散層を形成する第2の拡散層形成工程と、
前記半導体基板の前記光の入射面側の前記凹部形成領域以外の電極形成領域に表面電極を形成する表面電極形成工程と、
を含むことを特徴とする光起電力装置の製造方法。 - 前記微細孔形成工程では、前記耐エッチング膜が吸収する波長のレーザ光を用いて微細孔の形成処理を行うことを特徴とする請求項1に記載の光起電力装置の製造方法。
- 前記耐エッチング膜形成工程で、前記耐エッチング膜としてSiN膜を形成し、
前記微細孔形成工程では、波長が700nm以下のレーザ光を用いることを特徴とする請求項2に記載の光起電力装置の製造方法。 - 前記レーザ光の波長は、400nm以下であることを特徴とする請求項3に記載の光起電力装置の製造方法。
- 前記微細孔形成工程では、前記レーザ光の一部をマスクにより遮光して、前記耐エッチング膜に同時に複数の前記微細孔を開けることを特徴とする請求項2に記載の光起電力装置の製造方法。
- 前記微細孔形成工程では、ガルバノミラーを用いて前記レーザ光を前記耐エッチング膜上で走査させて、複数の前記微細孔を開けることを特徴とする請求項2に記載の光起電力装置の製造方法。
- 前記微細孔形成工程では、前記耐エッチング膜の三角格子点上または四角格子点上に前記微細孔を形成することを特徴とする請求項2に記載の光起電力装置の製造方法。
- 前記第1の拡散層形成工程で、前記第1の拡散層を形成した後、前記第1の拡散層の最表面を除去することを特徴とする請求項1に記載の光起電力装置の製造方法。
- 前記第2の拡散層形成工程では、前記第2の拡散層を形成した後、前記第2の拡散層の最表面を除去することを特徴とする請求項1に記載の光起電力装置の製造方法。
- 第1の導電型の半導体基板と、
前記半導体基板の光の入射面側に形成される第2の導電型の不純物が第1の濃度で拡散された第1の拡散層と、
前記第1の拡散層上に形成される櫛状のグリッド電極と前記グリッド電極間を結ぶバス電極と、
前記半導体基板の光の入射面に対向する裏面に形成される第1の導電型からなる第2の拡散層と、
前記第2の拡散層上に形成される裏面電極と、
を備える光起電力装置において、
前記半導体基板の光の入射面側の前記グリッド電極と前記バス電極が形成される電極形成領域以外の凹部形成領域で、所定の間隔で設けられた複数の凹部を有し、
隣接する前記凹部間の領域の上面は、前記第1の拡散層を含まず、
前記凹部の形成面から所定の深さの範囲には、第2の導電型の不純物が前記第1の濃度よりも低い第2の濃度で拡散された第3の拡散層が形成されていることを特徴とする光起電力装置。 - 前記凹部は、三角格子点上または四角格子点上に形成されることを特徴とする請求項10に記載の光起電力装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/058277 WO2009133607A1 (ja) | 2008-04-30 | 2008-04-30 | 光起電力装置およびその製造方法 |
EP08740945.4A EP2278632A4 (en) | 2008-04-30 | 2008-04-30 | PHOTOVOLTAIC DEVICE AND METHOD FOR MANUFACTURING THE SAME |
CN200880128931.2A CN102017187B (zh) | 2008-04-30 | 2008-04-30 | 光电动势装置及其制造方法 |
JP2010509971A JPWO2009133607A1 (ja) | 2008-04-30 | 2008-04-30 | 光起電力装置の製造方法 |
US12/989,098 US8012787B2 (en) | 2008-04-30 | 2008-04-30 | Photovoltaic device and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/058277 WO2009133607A1 (ja) | 2008-04-30 | 2008-04-30 | 光起電力装置およびその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009133607A1 true WO2009133607A1 (ja) | 2009-11-05 |
Family
ID=41254838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/058277 WO2009133607A1 (ja) | 2008-04-30 | 2008-04-30 | 光起電力装置およびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8012787B2 (ja) |
EP (1) | EP2278632A4 (ja) |
JP (1) | JPWO2009133607A1 (ja) |
CN (1) | CN102017187B (ja) |
WO (1) | WO2009133607A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011098549A1 (en) * | 2010-02-11 | 2011-08-18 | Imec | Method for single side texturing |
WO2011132340A1 (ja) * | 2010-04-21 | 2011-10-27 | 三菱電機株式会社 | 低反射基板の製造方法、光起電力装置の製造方法、および光起電力装置 |
US20110284069A1 (en) * | 2010-05-19 | 2011-11-24 | Jinah Kim | Solar cell and method for manufacturing the same |
WO2011145131A1 (ja) * | 2010-05-17 | 2011-11-24 | 三菱電機株式会社 | 光起電力装置の製造方法及び光起電力装置の製造装置 |
JP2013511838A (ja) * | 2009-11-18 | 2013-04-04 | ソーラー ウィンド テクノロジーズ, インコーポレイテッド | 光起電力セルの製造方法、それによって製造された光起電力セル、およびその用途 |
TWI424584B (zh) * | 2011-11-30 | 2014-01-21 | Au Optronics Corp | 製作太陽能電池之方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140335651A1 (en) * | 2008-11-14 | 2014-11-13 | Sichuan Yinhe Chemical Co., Ltd. | Inks and pastes for solar cell fabrication |
TW201133905A (en) * | 2010-03-30 | 2011-10-01 | E Ton Solar Tech Co Ltd | Method of forming solar cell |
DE112012006445B4 (de) * | 2012-05-31 | 2021-10-21 | Panasonic Intellectual Property Management Co., Ltd. | Fertigungsverfahren für Solarzelle |
US20160351733A1 (en) * | 2015-06-01 | 2016-12-01 | International Business Machines Corporation | Dry etch method for texturing silicon and device |
KR102137547B1 (ko) * | 2016-08-12 | 2020-07-24 | 삼성에스디아이 주식회사 | 태양전지용 전면 전극 및 이를 포함하는 태양전지 |
US10475693B1 (en) | 2018-06-07 | 2019-11-12 | Globalfoundries Inc. | Method for forming single diffusion breaks between finFET devices and the resulting devices |
CN113366656A (zh) * | 2019-03-20 | 2021-09-07 | 索尼半导体解决方案公司 | 光接收元件、光接收元件的制造方法以及摄像装置 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09283779A (ja) * | 1996-03-25 | 1997-10-31 | Hitachi Ltd | 太陽電池 |
JPH1070296A (ja) | 1996-08-27 | 1998-03-10 | Sharp Corp | 太陽電池及びその製造方法 |
JPH11508088A (ja) * | 1995-06-21 | 1999-07-13 | フラウンホファー.ゲゼルシャフト.ツール.フォルデンウング.デール.アンゲヴァンドテン.フォルシュング.エー.ファウ | 表面織目模様の放射層を有する太陽電池 |
JP2000022185A (ja) * | 1998-07-03 | 2000-01-21 | Sharp Corp | 太陽電池セル及びその製造方法 |
JP2002217430A (ja) * | 2001-01-03 | 2002-08-02 | Samsung Sdi Co Ltd | Pn接合太陽電池 |
JP2003197932A (ja) * | 2001-12-25 | 2003-07-11 | Kyocera Corp | 太陽電池素子およびその製造方法 |
JP2003309276A (ja) | 2002-04-16 | 2003-10-31 | Sharp Corp | 基板の表面加工方法及び太陽電池 |
JP2004047776A (ja) * | 2002-07-12 | 2004-02-12 | Honda Motor Co Ltd | 太陽電池セルおよびその製造方法 |
JP2006073832A (ja) * | 2004-09-02 | 2006-03-16 | Sharp Corp | 太陽電池及びその製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4322571A (en) * | 1980-07-17 | 1982-03-30 | The Boeing Company | Solar cells and methods for manufacture thereof |
US4451969A (en) * | 1983-01-10 | 1984-06-05 | Mobil Solar Energy Corporation | Method of fabricating solar cells |
JPS59172274A (ja) * | 1983-03-18 | 1984-09-28 | Sanyo Electric Co Ltd | 光起電力装置の製造方法 |
JP2007505487A (ja) * | 2003-09-09 | 2007-03-08 | シーエスジー ソーラー アクチェンゲゼルシャフト | 有機樹脂材料に開口部を形成する方法の改良 |
JPWO2009118861A1 (ja) * | 2008-03-27 | 2011-07-21 | 三菱電機株式会社 | 光起電力装置およびその製造方法 |
-
2008
- 2008-04-30 JP JP2010509971A patent/JPWO2009133607A1/ja active Pending
- 2008-04-30 EP EP08740945.4A patent/EP2278632A4/en not_active Withdrawn
- 2008-04-30 CN CN200880128931.2A patent/CN102017187B/zh not_active Expired - Fee Related
- 2008-04-30 US US12/989,098 patent/US8012787B2/en not_active Expired - Fee Related
- 2008-04-30 WO PCT/JP2008/058277 patent/WO2009133607A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11508088A (ja) * | 1995-06-21 | 1999-07-13 | フラウンホファー.ゲゼルシャフト.ツール.フォルデンウング.デール.アンゲヴァンドテン.フォルシュング.エー.ファウ | 表面織目模様の放射層を有する太陽電池 |
JPH09283779A (ja) * | 1996-03-25 | 1997-10-31 | Hitachi Ltd | 太陽電池 |
JPH1070296A (ja) | 1996-08-27 | 1998-03-10 | Sharp Corp | 太陽電池及びその製造方法 |
JP2000022185A (ja) * | 1998-07-03 | 2000-01-21 | Sharp Corp | 太陽電池セル及びその製造方法 |
JP2002217430A (ja) * | 2001-01-03 | 2002-08-02 | Samsung Sdi Co Ltd | Pn接合太陽電池 |
JP2003197932A (ja) * | 2001-12-25 | 2003-07-11 | Kyocera Corp | 太陽電池素子およびその製造方法 |
JP2003309276A (ja) | 2002-04-16 | 2003-10-31 | Sharp Corp | 基板の表面加工方法及び太陽電池 |
JP2004047776A (ja) * | 2002-07-12 | 2004-02-12 | Honda Motor Co Ltd | 太陽電池セルおよびその製造方法 |
JP2006073832A (ja) * | 2004-09-02 | 2006-03-16 | Sharp Corp | 太陽電池及びその製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2278632A4 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013511838A (ja) * | 2009-11-18 | 2013-04-04 | ソーラー ウィンド テクノロジーズ, インコーポレイテッド | 光起電力セルの製造方法、それによって製造された光起電力セル、およびその用途 |
WO2011098549A1 (en) * | 2010-02-11 | 2011-08-18 | Imec | Method for single side texturing |
US8969216B2 (en) | 2010-02-11 | 2015-03-03 | Imec | Method for single side texturing |
WO2011132340A1 (ja) * | 2010-04-21 | 2011-10-27 | 三菱電機株式会社 | 低反射基板の製造方法、光起電力装置の製造方法、および光起電力装置 |
JP5430751B2 (ja) * | 2010-04-21 | 2014-03-05 | 三菱電機株式会社 | 低反射基板の製造方法、および光起電力装置の製造方法 |
WO2011145131A1 (ja) * | 2010-05-17 | 2011-11-24 | 三菱電機株式会社 | 光起電力装置の製造方法及び光起電力装置の製造装置 |
JP5318285B2 (ja) * | 2010-05-17 | 2013-10-16 | 三菱電機株式会社 | 光起電力装置の製造方法 |
US20110284069A1 (en) * | 2010-05-19 | 2011-11-24 | Jinah Kim | Solar cell and method for manufacturing the same |
TWI424584B (zh) * | 2011-11-30 | 2014-01-21 | Au Optronics Corp | 製作太陽能電池之方法 |
Also Published As
Publication number | Publication date |
---|---|
US20110053310A1 (en) | 2011-03-03 |
JPWO2009133607A1 (ja) | 2011-08-25 |
US8012787B2 (en) | 2011-09-06 |
CN102017187A (zh) | 2011-04-13 |
CN102017187B (zh) | 2012-10-10 |
EP2278632A1 (en) | 2011-01-26 |
EP2278632A4 (en) | 2013-11-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009133607A1 (ja) | 光起電力装置およびその製造方法 | |
WO2009118861A1 (ja) | 光起電力装置およびその製造方法 | |
US8039396B2 (en) | Method for manufacturing photovoltaic device | |
JP5361990B2 (ja) | 基板の粗面化方法および光起電力装置の製造方法 | |
US9583651B2 (en) | Systems and methods for enhanced light trapping in solar cells | |
US20130130430A1 (en) | Spatially selective laser annealing applications in high-efficiency solar cells | |
JP4964186B2 (ja) | 光起電力装置の製造方法 | |
JP2008227070A (ja) | 光起電力装置の製造方法 | |
JP2006080450A (ja) | 太陽電池の製造方法 | |
JP5777798B2 (ja) | 太陽電池セルの製造方法 | |
JP5344872B2 (ja) | 光起電力装置 | |
JP2014239085A (ja) | 太陽電池素子およびその製造方法 | |
JP5073468B2 (ja) | 光起電力装置の製造方法 | |
WO2010150606A1 (ja) | 光起電力装置およびその製造方法 | |
JP5213826B2 (ja) | 光起電力装置の製造方法及び製造装置 | |
JP2006054254A (ja) | 光電変換装置の製造方法 | |
JP4964222B2 (ja) | 光起電力装置の製造方法 | |
CN103400898B (zh) | 光电动势装置的制造方法 | |
JP2012023139A (ja) | エッチング方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880128931.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08740945 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010509971 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12989098 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008740945 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |