WO2014076972A1 - 太陽電池セル及び太陽電池セルの抵抗算出方法 - Google Patents
太陽電池セル及び太陽電池セルの抵抗算出方法 Download PDFInfo
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- WO2014076972A1 WO2014076972A1 PCT/JP2013/006773 JP2013006773W WO2014076972A1 WO 2014076972 A1 WO2014076972 A1 WO 2014076972A1 JP 2013006773 W JP2013006773 W JP 2013006773W WO 2014076972 A1 WO2014076972 A1 WO 2014076972A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F10/00—Individual photovoltaic cells, e.g. solar cells
- H10F10/10—Individual photovoltaic cells, e.g. solar cells having potential barriers
- H10F10/16—Photovoltaic cells having only PN heterojunction potential barriers
- H10F10/164—Photovoltaic cells having only PN heterojunction potential barriers comprising heterojunctions with Group IV materials, e.g. ITO/Si or GaAs/SiGe photovoltaic cells
- H10F10/165—Photovoltaic cells having only PN heterojunction potential barriers comprising heterojunctions with Group IV materials, e.g. ITO/Si or GaAs/SiGe photovoltaic cells the heterojunctions being Group IV-IV heterojunctions, e.g. Si/Ge, SiGe/Si or Si/SiC photovoltaic cells
- H10F10/166—Photovoltaic cells having only PN heterojunction potential barriers comprising heterojunctions with Group IV materials, e.g. ITO/Si or GaAs/SiGe photovoltaic cells the heterojunctions being Group IV-IV heterojunctions, e.g. Si/Ge, SiGe/Si or Si/SiC photovoltaic cells the Group IV-IV heterojunctions being heterojunctions of crystalline and amorphous materials, e.g. silicon heterojunction [SHJ] photovoltaic cells
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/10—Semiconductor bodies
- H10F77/16—Material structures, e.g. crystalline structures, film structures or crystal plane orientations
- H10F77/162—Non-monocrystalline materials, e.g. semiconductor particles embedded in insulating materials
- H10F77/166—Amorphous semiconductors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/206—Electrodes for devices having potential barriers
- H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
- H10F77/219—Arrangements for electrodes of back-contact photovoltaic cells
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- 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
Definitions
- the present invention relates to a solar cell and a resistance calculation method for the solar cell.
- the resistance between the semiconductor substrate and the electrode formed on the amorphous semiconductor layer is calculated. It is effective to feed back the production conditions.
- Patent Document 1 discloses a method for obtaining a contact resistance between a diffusion layer and an electrode of a photoelectric conversion element.
- a silver paste is applied by screen printing so as to be in direct contact with the diffusion layer on the main surface side of the photoelectric conversion element to form a first electrode and a second electrode.
- Samples in which the interelectrode distance D between the electrodes is changed from 1 to 5 mm are prepared, and the contact resistance is measured.
- TLM transmission line model
- An object of the present invention is to calculate the resistance between a semiconductor substrate and an electrode formed on an amorphous semiconductor layer using a solar cell as a product.
- the solar cell according to the present invention is a photoelectric cell in which a first conductive type amorphous semiconductor layer and a second conductive type amorphous semiconductor layer are arranged on one surface of a first conductive type semiconductor substrate.
- the first electrode disposed in the predetermined first electrode region and the second conductive type amorphous semiconductor layer of the first conductive type amorphous semiconductor layer.
- a second electrode disposed in the two-electrode region; and at least two first measurement electrodes provided at a predetermined interval on the first conductive type amorphous semiconductor layer.
- the first conductive type amorphous semiconductor layer and the second conductive type amorphous semiconductor layer are formed on one surface of the first conductive type semiconductor substrate.
- the first electrode is disposed on the first conductive type amorphous semiconductor layer and the second electrode is disposed on the second conductive type amorphous semiconductor layer.
- the voltage-current characteristics between the electrodes are measured to determine the resistance value between the measurement electrodes, and the resistance value between the measurement electrodes of the semiconductor substrate that has been obtained in advance is subtracted from the resistance value between the measurement electrodes.
- the first resistance between the electrodes is calculated.
- the resistance including the contact resistance between the amorphous semiconductor layer and the electrode can be calculated.
- FIG. 2 is a cross-sectional view taken along line AA in FIG. It is a figure explaining calculation of resistance in a photovoltaic cell concerning an embodiment. It is a figure which shows the example of other arrangement
- FIG. 1 is a plan view of the back surface side of a back junction solar cell 10.
- the back junction solar cell 10 has a pn junction for performing photoelectric conversion on the back surface opposite to the light receiving surface, and an electrode is provided only on the back surface. Thus, since no electrode is disposed on the light receiving surface, a large light receiving area can be obtained, and the photoelectric conversion efficiency per area is improved.
- the back side of the paper is the light receiving side
- the near side is the back side.
- the back junction solar cell 10 is simply referred to as the solar cell 10.
- the solar battery cell 10 includes an n-type amorphous semiconductor layer and a p-type amorphous semiconductor layer arranged in a plane on an n-type semiconductor substrate, and receives holes such as sunlight and the like.
- generates the photo-generated carrier of an electron, and the electrodes 14 and 16 which take out the photoelectrically converted electric power are provided.
- the electrodes 14 and 16 have a laminated structure of transparent conductive film layers 14-1 and 16-1 and Cu plating layers 14-2 and 16-2 as will be described later. Further, a resistance measurement unit including a plurality of measurement electrodes for measuring resistance including contact resistance between the amorphous semiconductor layer and the electrode at the outer peripheral edge 18 of the electrode region where the electrodes 14 and 16 are disposed. 20.
- FIG. 2 is a cross-sectional view showing the structure of the back junction solar cell 10.
- This sectional view is a sectional view in an electrode region in which the electrodes 14 and 16 are arranged.
- the upper side on the paper surface is the back surface side of the solar battery cell 10 and the lower side is the light receiving surface side.
- the substrate 22 is made of a crystalline semiconductor material.
- the substrate 22 can be an n-type or p-type conductive crystalline semiconductor substrate.
- a single crystal silicon substrate a polycrystalline silicon substrate, a gallium arsenide (GaAs) substrate, an indium phosphide (InP) substrate, or the like can be used.
- the substrate 22 absorbs the incident light and generates a carrier pair of electrons and holes by photoelectric conversion.
- an n-type silicon single crystal is used as the substrate 22.
- the substrate 22 is shown as c-Si.
- the n-type region 24 has a stacked structure of an i-type amorphous semiconductor layer 24-1 and an n-type amorphous semiconductor layer 24-2.
- the i-type amorphous semiconductor layer is referred to as i layer
- the n-type amorphous semiconductor layer is referred to as n layer
- the p-type amorphous semiconductor layer is also referred to as p layer.
- the i layer 24-1 is formed on the entire surface of the substrate 22.
- the i layer 24-1 can be an amorphous semiconductor layer containing hydrogen, for example.
- An example of the thickness of the i layer is about 1 to 25 nm, preferably about 5 to 10 nm.
- the n layer 24-2 is formed on the entire surface of the i layer 24-1.
- the n layer 24-2 includes a donor which is an n-type conductivity element in an amorphous semiconductor layer containing hydrogen.
- An example of the thickness of the n layer is about 5 to 20 nm, preferably about 10 to 15 nm.
- the SiN x layer 26 is a silicon nitride film layer used to separate the n-type region and the p-type region.
- the SiN X layer 26 is formed in a region corresponding to the n-type region 24 on the n layer 24-2.
- a typical example of silicon nitride is Si 3 N 4 , but it does not necessarily have a composition of Si 3 N 4 depending on film forming conditions, but generally has a composition of SiN x .
- An example of the thickness of the SiN x layer 26 is about 10 to 500 nm, preferably about 50 to 100 nm.
- the p-type region 28 has a stacked structure of an i layer 28-1 and a p layer 28-2.
- the i layer 28-1 is formed on the exposed substrate 22 by using the SiN X layer 26 as a mask to remove the i layer 24-1 and the n layer 24-2 except for the n-type region to expose the substrate 22.
- the i layer 28-1 can be an amorphous semiconductor layer containing hydrogen like the i layer 24-1, and the thickness thereof is about 1 to 25 nm, preferably about 5 to 10 nm, like the i layer 24-1.
- the p layer 28-2 is formed on the i layer 28-1.
- the p layer 28-2 includes an acceptor which is a p-type conductivity element in an amorphous semiconductor layer containing hydrogen.
- An example of the thickness of the p layer 28-2 is about 5 to 20 nm, preferably about 10 to 15 nm.
- the electrodes 14 and 16 have a laminated structure of transparent conductive film layers 14-1 and 16-1 and Cu plating layers 14-2 and 16-2.
- the electrode 14 is an n-type electrode drawn from the n-type region 24, and is configured by laminating a transparent conductive film layer 14-1 and a Cu plating layer 14-2 on an n layer 24-2.
- the electrode 16 is a p-type electrode drawn out from the p-type region 28, and is configured by laminating a transparent conductive film layer 16-1 and a Cu plating layer 16-2 on a p-layer 28-2.
- the transparent conductive layers 14-1 and 16-1 are made of, for example, indium oxide (In 2 O 3 ), zinc oxide (ZnO), tin oxide (SnO 2 ), titanium oxide (TiO 2 ) having a polycrystalline structure. It comprises at least one metal oxide.
- An example of the thickness of the transparent conductive film layers 14-1 and 16-1 is about 70 to 100 nm.
- the Cu plating layers 14-2 and 16-2 are formed by an electrolytic plating method.
- An example of the thickness of the Cu plating layers 14-2 and 16-2 is about 10 ⁇ m to 20 ⁇ m.
- a base electrode layer may be used when forming the Cu plating layers 14-2 and 16-2.
- an Sn plating layer may be formed on the Cu plating layers 14-2 and 16-2.
- the passivation layer 30 on the light-receiving surface side is a layer that protects the surface that is the light-receiving surface of the substrate 22 on which photoelectric conversion is performed, and has a laminated structure of an i layer 30-1 and an n layer 30-2. As described above, the i layer 24-1 and the n layer 24-2 for the n-type region 24 are formed on the back surface side of the substrate 22, and at this time, the i layer 30 is also formed on the light receiving surface side of the substrate 22. ⁇ 1 and n layer 30-2 are formed, which can be used as the passivation layer 30.
- the antireflection layer 32 is an insulating film layer having a function of suppressing reflection on the light receiving surface, and a SiN x layer is used.
- SiN x 26 is also formed on the light receiving surface side of the substrate 22, and this is used as the antireflection layer 32. be able to.
- FIG. 3 is a cross-sectional view of the resistance measuring unit 20.
- the resistance measuring unit 20 is provided between the substrate 22 and the electrode on the n-type region or the electrode on the p-type region on the outer peripheral edge 18 outside the electrode region where the electrodes 14 and 16 are arranged in the solar battery cell 10. It is a plurality of measurement electrode groups provided for measuring resistance.
- the resistance between the substrate 22 and the electrode on the n-type region 24 is n-type resistance
- the resistance between the substrate 22 and the electrode on the p-type region 28 is p-type resistance.
- three measurement electrodes 34, 36 and 38 are shown, but more measurement electrodes may be provided.
- illustration of the stacked structure of the n-type region 24, the p-type region 28, and the electrodes 14 and 16 is omitted.
- the electrodes 14 and 16 are not disposed on the outer peripheral edge 18. However, it is possible to form an arbitrary electrode structure on the outer peripheral edge 18 by adjusting the position of the mask when forming each layer in accordance with the formation process of the electrodes 14 and 16. Therefore, an n-type region 24 is formed in the outer peripheral edge 18 under the same conditions as the electrode region, and at least two measurement electrodes are provided in the n-type region 24 at a predetermined electrode interval. A current-voltage characteristic (IV characteristic) between the measurement electrodes is measured, and an n-type resistance between the measurement electrode and the substrate 22 is calculated based on the current-voltage characteristic (IV characteristic).
- IV characteristic current-voltage characteristic
- a p-type region 28 is formed in the outer peripheral edge 18 under the same conditions as the electrode region, and at least one measurement electrode is provided in the p-type region 28.
- An IV characteristic between the measurement electrode on the n-type region 24 and the measurement electrode on the p-type region 28 is measured, and the measurement electrode between the measurement electrode on the n-type region 24 and the measurement electrode on the p-type region 28 is measured.
- First resistance is calculated.
- a p-type resistance between the substrate 22 and the measurement electrode on the p-type region 28 is calculated based on the calculated n-type resistance and the first resistance.
- the n-type resistance and the p-type resistance are the interface between each layer provided between the substrate 22 and the measurement electrode, i layer 24-1 or i layer 28-1, n layer 24-2 or p layer 28, respectively. -2 resistance included.
- the resistance measurement unit 20 calculates the n-type resistance between the substrate 22 and the measurement electrode on the n-type region 24 and the p-type resistance between the substrate 22 and the measurement electrode on the p-type region 28, respectively. It can be measured separately.
- the plane dimensions and the inter-electrode spacing of the three measurement electrodes 34, 36 and 38 are made the same, the measurement electrodes 34 and 36 are drawn from the n-type region 24, and the measurement electrode 38 is drawn from the p-type region 28.
- the three measurement electrodes 34, 36, and 38 are arranged in a line along the outer side edge X of the solar battery cell 10 at the outer peripheral edge 18.
- the plane dimensions and the inter-electrode spacing of the three measurement electrodes 34, 36, 38 are made sufficiently smaller than the dimensions of the outer peripheral edge 18 in the width direction (direction perpendicular to the side X). For example, it may be set to 1/10 or less of the dimension in the width direction of the outer peripheral edge 18.
- An example of the dimension in the width direction of the outer peripheral edge 18 is about 1 to 3 mm.
- An example of the planar dimensions of the measurement electrodes 34, 36, and 38 in this case can be a square having a side of about 100 to 500 ⁇ m.
- the distance between the measurement electrode 34 and the measurement electrode 36 and the distance between the measurement electrode 36 and the measurement electrode 38 are about 50 to 200 ⁇ m.
- the IV characteristics between the measurement electrodes 34 and 36 drawn from the n-type region 24 are obtained, and based on the IV characteristics, the measurement results between the substrate 22 and the measurement electrodes 34 and 36 on the n-type region 24 are obtained.
- An n-type resistance can be calculated.
- an IV characteristic between the measurement electrode 34 drawn from the n-type region 24 and the measurement electrode 38 drawn from the p-type region 28 is obtained, and based on this, a second characteristic between the measurement electrode 34 and the measurement electrode 38 is obtained.
- a type 1 resistance can be calculated.
- a p-type resistance between the substrate 22 and the measurement electrode 38 on the p-type region 28 can be calculated using the calculated n-type resistance and the first resistance.
- the measurement principle of the resistance R C will be described using the model of FIG.
- two measurement electrodes 42, 44 are provided on the semiconductor layer 40 with an interelectrode distance L, and a current I is passed between the measurement electrodes 42, 44, and the measurement electrodes 42, 44 at that time are provided. Is measured to obtain a resistance value R between the measurement electrodes, and a resistance RC between the semiconductor layer 40 and the measurement electrodes 42 and 44 is obtained based on the resistance value R between the measurement electrodes.
- the resistance value R between the measurement electrodes may be obtained by first applying a voltage V between the measurement electrodes 42 and 44 and measuring the current I flowing between the measurement electrodes 42 and 44.
- the measurement electrode resistance R SUB of the semiconductor layer 40 is the specific resistivity of the semiconductor layer 40 as ⁇ .
- R SUB ⁇ ⁇ (L / S)
- R Cn ⁇ (R 34 ⁇ 3 6 ⁇ R SUBn ) / 2 ⁇ based on the above principle.
- R 34 ⁇ 3 6 V 34 ⁇ 3 6 / I 34 ⁇ 3 6 .
- R SUBn is an interelectrode resistance value of the substrate 22 and the n-type region 24, but may be substantially an interelectrode resistance value R SUB22 of the substrate 22.
- R Cn thus obtained can be used as an n-type resistance between the substrate 22 and the electrode 14 on the n-type region 24 in the electrode region of the solar battery cell 10.
- the n-type resistance includes the interface of each layer between the substrate 22 and the electrode 14, and the resistance of the i layer 24-1 and the n layer 24-2.
- This current-voltage characteristic corresponds to the current-voltage characteristic between the n-type electrode and the p-type electrode of the solar battery cell 10, where the current is I and the voltage is V, and the following equation is used. it can.
- k B is a Boltzmann constant
- T is a temperature
- R S and R Sh are a series resistance and a parallel resistance, respectively, when the photovoltaic cell 10 is a model in which minute photoelectric conversion units are connected in parallel. .
- R Cp obtained in this way can be used as a p-type resistance between the substrate 22 in the electrode region of the solar battery cell 10 and the electrode 16 on the p-type region 28.
- the p-type resistance includes the interface of each layer between the substrate 22 and the electrode 16, and the resistance of the i layer 28-1 and the p layer 28-2.
- the model in FIG. 4 assumes that L is sufficiently long and S is sufficiently wide, but a case where L is short is also conceivable.
- L is a length that contributes as a resistance value when a current flows. Therefore, when L is short, it is preferable to correct R and calculate R SUB .
- R SUB is obtained by setting the correction coefficient as ⁇ and L as ⁇ L / S. ⁇ can be obtained in advance by experiments or the like.
- the resistance measuring unit 20 is provided in the outer peripheral edge 18 of the solar battery cell 10, but may be provided in the electrode region of the solar battery cell 10.
- a configuration when the resistance measuring unit 20 is provided in the electrode region will be described with reference to FIGS. 5 to 8 are enlarged views of a portion of the electrode region on the back surface of the solar battery cell 10, respectively.
- an n-type region 25 is formed at the center of the p-type region 28, and two measurement electrodes 35 and 37 are provided with a predetermined electrode interval. That is, the two measurement electrodes 35 and 37 are surrounded by the electrode 16 at a predetermined interval. Accordingly, the n-type resistance can be calculated using the two measurement electrodes 35 and 37, and the first resistance can be calculated using the measurement electrodes 35 and 37 and the electrode 16. Then, the p-type resistance is calculated based on the n-type resistance and the first resistance.
- the n-type region 24 is formed at the center of the p-type region 28, but the n-type region 25 is formed at the center of the n-type region 24, and the two measurement electrodes 35 and 37 are formed. May be provided. That is, the measurement electrodes 35 and 37 are surrounded by the electrode 14 with a predetermined interval. In this case, the n-type resistance can be calculated using the two measurement electrodes 35 and 37. The first resistance can be calculated using the electrode 14 and the electrode 16 adjacent to the electrode 14. Note that the n-type regions 24 and 25 may be formed simultaneously or separately.
- one measurement electrode 35 is provided at the center of the n-type region 24. That is, the measurement electrode 35 is surrounded by the electrode 14 with a predetermined interval.
- the n-type resistance can be calculated using the measurement electrode 35 and the electrode 14, and the first resistance can be calculated using the electrode 14 and the electrode 16 adjacent to the electrode 14.
- the p-type resistance is calculated based on the n-type resistance and the first resistance.
- an n-type region 25 is formed between the tip of the electrode 16 and the electrode 14, and two measurement electrodes 35 and 37 are provided with a predetermined electrode interval. Accordingly, the n-type resistance can be calculated using the two measurement electrodes 35 and 37, and the first resistance is calculated using the electrode 16 and the measurement electrodes 35 and 37 or the electrode 14 adjacent to the electrode 16. Can do. Then, the p-type resistance is calculated based on the n-type resistance and the first resistance.
- an n-type region 25 is formed between the tip of the electrode 14 and the electrode 16, and one measurement electrode 35 is provided at a predetermined interval from the electrode 14. Thereby, the n-type resistance can be calculated using the measurement electrode 35 and the electrode 14. Then, the p-type resistance is calculated based on the n-type resistance and the first resistance. Note that the n-type regions 24 and 25 may be formed simultaneously or separately.
- the place where the resistance measurement unit 20 is provided is not particularly limited.
- the n-type resistance can be calculated by providing at least two electrodes on the n-type regions 24 and 25 at a predetermined electrode interval.
- the electrodes 14 provided on the n-type region 24 and the electrodes 16 provided on the p-type region 28 are alternately arranged adjacent to each other at a predetermined interval. Therefore, the first resistance can be easily calculated using the electrodes 14 and 16. That is, the p-type resistance between the substrate 22 and the electrode on the p-type region 28 can be easily calculated only by providing at least two electrodes on the n-type regions 24 and 25 at a predetermined electrode interval. is there.
- n-type silicon single crystal is used as the substrate 22
- at least two electrodes are provided on the n-type region 24 at a predetermined electrode interval.
- a p-type crystalline semiconductor substrate is used as the substrate 22, the same effect as described above can be obtained if at least two electrodes are provided on the p-type region 28 at a predetermined electrode interval.
- the present invention can be used for solar cells.
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Abstract
Description
Claims (11)
- 第1導電型の半導体基板の一方の面上において、前記第1導電型の非晶質半導体層と第2導電型の非晶質半導体層とが配置された光電変換部と、
前記第1導電型の非晶質半導体層のうち、予め定めた第1電極領域に配置された第1電極と、
前記第2導電型の非晶質半導体層のうち、予め定めた第2電極領域に配置された第2電極と、
前記第1導電型の非晶質半導体層上において、互いに所定の間隔をあけて設けられた少なくとも2つの第1測定電極と、
を有する、太陽電池セル。 - 前記第2導電型の非晶質半導体層上において、前記第1測定電極に対し所定の間隔をあけて設けられた少なくとも1つの第2測定電極を有する、請求項1に記載の太陽電池セル。
- 前記第1測定電極は、前記光電変換部上の前記第1電極領域および前記第2電極領域以外の領域に配置されている、請求項1に記載の太陽電池セル。
- 前記第1測定電極および前記第2測定電極は、前記光電変換部上の前記第1電極領域および前記第2電極領域以外の領域に配置されている、請求項2に記載の太陽電池セル。
- 前記少なくとも2つの第1測定電極は、互いに隣接して設けられる、請求項1から4のいずれか1項に記載の太陽電池セル。
- 前記第1測定電極の一つと、前記第2測定電極とは、互いに隣接して設けられている、請求項2または4に記載の太陽電池セル。
- 第1導電型の半導体基板の一方の面上において、前記第1導電型の非晶質半導体層と第2導電型の非晶質半導体層とが配置された光電変換部と、
前記第1導電型の非晶質半導体層のうち、予め定めた第1電極領域上に配置された第1電極と、
前記第2導電型の非晶質半導体層のうち、予め定めた第2電極領域上に配置された第2電極と、
前記第1導電型の非晶質半導体層上に配置された第3測定電極とを備え、
前記第3測定電極は、前記第1電極と所定の間隔をあけて、前記第1電極と隣接して配置されている、太陽電池セル。 - 前記第3測定電極は、前記第1電極の中央部において、前記第1電極に囲まれるように配置されている、請求項7に記載の太陽電池セル。
- 第1導電型の半導体基板の一方の面上において、前記第1導電型の非晶質半導体層と第2導電型の非晶質半導体層とが配置され、前記第1導電型の非晶質半導体層上に第1電極が配置され、前記第2導電型の非晶質半導体層上に第2電極が配置された太陽電池セルにおいて、前記半導体基板と前記第1電極および第2電極の少なくとも一方との間の抵抗を測定する方法であって、
前記第1導電型の非晶質半導体層上において、互いに所定の間隔をあけて設けられる少なくとも2つの第1測定電極の間の電圧-電流特性を測定して測定電極間抵抗値を求め、
前記測定電極間抵抗値から予め求めておいた前記半導体基板の測定電極間抵抗値を減算して、前記半導体基板と前記第1測定電極との間の第1抵抗を算出する、太陽電池セルの抵抗算出方法。 - 前記第2導電型の非晶質半導体層に、前記第1測定電極と所定の間隔をあけて設けられる少なくとも1つの第2測定電極を用い、前記第1測定電極と前記第2測定電極の間の電圧-電流特性を測定して第2の測定電極間抵抗値を求め、
前記第2の測定電極間抵抗値から前記半導体基板の測定電極間抵抗値と前記第1抵抗を減算して、前記半導体基板と前記第2測定電極との間の第2抵抗を算出する、請求項9に記載の太陽電池セルの抵抗算出方法。 - 前記2つの第1測定電極間の間隔および前記第1測定電極と前記第2測定電極との間隔に応じて前記半導体基板の電極間抵抗値を補正する、請求項9または10に記載の太陽電池セルの抵抗算出方法。
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| DE112013005513.9T DE112013005513B4 (de) | 2012-11-19 | 2013-11-19 | Solarzelle und Verfahren zum Berechnen des Widerstands einer Solarzelle |
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| WO2016068051A1 (ja) * | 2014-10-31 | 2016-05-06 | シャープ株式会社 | 光電変換素子、それを備えた太陽電池モジュールおよび太陽光発電システム |
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| JP2001068699A (ja) * | 1999-08-30 | 2001-03-16 | Kyocera Corp | 太陽電池 |
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| JPS6196610A (ja) * | 1984-10-17 | 1986-05-15 | 松下電器産業株式会社 | 透明導電膜及びその形成方法 |
| JP2008205398A (ja) * | 2007-02-22 | 2008-09-04 | Sharp Corp | 光電変換素子およびその製造方法 |
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| WO2016068051A1 (ja) * | 2014-10-31 | 2016-05-06 | シャープ株式会社 | 光電変換素子、それを備えた太陽電池モジュールおよび太陽光発電システム |
| JPWO2016068051A1 (ja) * | 2014-10-31 | 2017-08-31 | シャープ株式会社 | 光電変換素子、それを備えた太陽電池モジュールおよび太陽光発電システム |
| US11316061B2 (en) | 2014-10-31 | 2022-04-26 | Sharp Kabushiki Kaisha | Photovoltaic devices, photovoltaic modules provided therewith, and solar power generation systems |
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| JP6238084B2 (ja) | 2017-11-29 |
| DE112013005513T5 (de) | 2015-07-30 |
| DE112013005513B4 (de) | 2019-02-28 |
| JPWO2014076972A1 (ja) | 2017-01-05 |
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