CN108110083A - A kind of graphite boat saturation process of solar cell - Google Patents

A kind of graphite boat saturation process of solar cell Download PDF

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Publication number
CN108110083A
CN108110083A CN201711226025.3A CN201711226025A CN108110083A CN 108110083 A CN108110083 A CN 108110083A CN 201711226025 A CN201711226025 A CN 201711226025A CN 108110083 A CN108110083 A CN 108110083A
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China
Prior art keywords
saturation
graphite boat
graphite
silicon nitride
boat
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CN201711226025.3A
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Chinese (zh)
Inventor
常宇峰
缪强
宛正
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Jiangsu Rainbow Wing New Energy Co Ltd
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Jiangsu Rainbow Wing New Energy Co Ltd
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Priority to CN201711226025.3A priority Critical patent/CN108110083A/en
Publication of CN108110083A publication Critical patent/CN108110083A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876Particular processes or apparatus for batch treatment of the devices
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a kind of graphite boat saturation process of solar cell, processing step includes removal silicon nitride layer, rinsing, drying, assembling, again saturation graphite boat, saturation graphite boat and plated film.The graphite boat saturation process of the solar cell; graphite boat card is protected so as to reach by installation card point protection component; long-time silicon nitride layer saturation first is carried out to graphite boat piece; secondary plating boat saturation after stuck point protection component is removed again; it is combined using two kinds of saturation modes and saturation fully has been carried out to graphite boat piece; in turn avoid influence of the stuck point partial silicon nitride plated film to cell piece color in long-time saturation history; generate the more uniform monolithic no color differnece of silicon chip film-coated color; plated film colour consistency improves, so as to substantially increase the qualification rate of finished battery.

Description

A kind of graphite boat saturation process of solar cell
Technical field
The invention belongs to technical field of solar batteries, and in particular to a kind of graphite boat saturation process of solar cell.
Background technology
At present, polysilicon solar cell technique has reached its maturity, and realizes standardized production, main technological steps are such as Under:Acid corrosion making herbs into wool → diffusion → wet etching → PECVD coated with antireflection film → silk-screen printing → sintering → testing, sorting. Wherein, PECVD coating process plays a decisive role to the color appearance of solar battery sheet, and the saturation quality of graphite boat is direct Influence the uniformity of plated film color.Graphite boat saturation mode is a traditional saturation process in industry, after this technique saturation Graphite boat service life is shorter, first five boat color distortion is larger after new boat saturation after cleaning, and mainly color distortion is deposited greatly in piece In the thin bad order in the red center of silicon chip edge, bad order ratio is up to more than 80%.Graphite boat using the present invention is satisfied And method, new boat plated film color uniformity consistency can be made good, color distortion in piece caused by greatly reducing new boat uses this Method can reduce plating boat cost, and the component used in saturation graphite boat may be reused for ceramic jacket in graphite boat component.
The content of the invention
It is an object of the invention to provide a kind of graphite boat saturation process of solar cell, to solve above-mentioned background technology The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution:The graphite boat saturation process of solar cell, including Remove silicon nitride layer, rinsing, drying, assembling, saturation, again dismounting, saturation and plated film.
In addition, the graphite boat saturation process of solar cell of the present invention comprises the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 5%-20% hydrofluoric acid solutions removal graphite boat piece;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times every time 2 it is small when;
S3, drying:Graphite boat piece is dried with baking oven, drying temperature 80-120 degree;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points according to the method, and porcelain bushing is used for that graphite stuck point border is avoided to be coated with silicon nitride film;
S5, saturation:Saturation graphite boat carries out graphite boat using PECVD plating boat saturation, and saturated gas used is ammonia and silicon Alkane;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking;
S7, again saturation:Satisfy again and saturation mainly is carried out to graphite clamping point, saturated gas used is ammonia and silane;
S8, plated film:It is normally carried out coating process.
The technique effect and advantage of the present invention:The graphite boat saturation process of the solar cell, passes through installation card point protection So as to reach protection graphite boat card, stuck point protection component for ceramic jacket can recycle, first graphite boat piece is grown component Time silicon nitride layer saturation, then by stuck point protection component removed after secondary plating boat saturation, use two kinds of saturation mode knots Conjunction has fully carried out saturation to graphite boat piece, in turn avoids in long-time saturation history stuck point partial silicon nitride plated film to battery The influence of piece color generates the more uniform monolithic no color differnece of silicon chip film-coated color, and plated film colour consistency improves, and plated film is done over again Ratio reduces, and can substantially reduce saturation graphite boat cost, and new boat plated film color is uniform after saturation, colour consistency between piece inner sheet Good, the finished battery factor of merit is promoted.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the graphite stuck point structure diagram of the present invention;
Fig. 3 is the porcelain bushing structure diagram of the present invention.
In figure:1 graphite stuck point, 2 porcelain bushings.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work Embodiment belongs to the scope of protection of the invention.
Embodiment 1
The present invention provides a kind of graphite boat saturation process of solar cell, include the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 15% hydrofluoric acid solution removal graphite boat piece, when scavenging period 4 is small;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times 8 it is small when rinse every time plus spray, for the first time rinsing 1 Hour, when second of rinsing 2 is small, when third time rinsing 2 is small, when the 3rd rinsing 3 is small;
S3, drying:The graphite boat completed to cleaning is dried with baking oven, 100 degree of drying temperature, when drying time setting 8 is small;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points 1 according to the method, and porcelain bushing 2 is used for that 1 border of graphite stuck point is avoided to be coated with silicon nitride Film;
S5, saturation:Saturation graphite boat carries out graphite boat piece using PECVD plating silicon nitride layer and carries out saturation, saturated gas used It is ammonia and silane, saturation process time 100min, ammonia flow 4000ml/min, silane flow rate 500ml/min, radio-frequency power 4500W, process pressure 150Pa;
S6, plated film:It is normally carried out coating process.
Embodiment 2
The present invention provides a kind of graphite boat saturation process of solar cell, include the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 15% hydrofluoric acid solution removal graphite boat piece, when scavenging period 4 is small;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times 8 it is small when rinse every time plus spray, for the first time rinsing 1 Hour, when second of rinsing 2 is small, when third time rinsing 2 is small, when the 3rd rinsing 3 is small;
S3, drying:The graphite boat completed to cleaning is dried with baking oven, 100 degree of drying temperature, when drying time setting 8 is small;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points 1 according to the method, and porcelain bushing 2 is used for that 1 border of graphite stuck point is avoided to be coated with silicon nitride Film;
S5, saturation:Saturation graphite boat carries out graphite boat piece using PECVD plating silicon nitride layer and carries out saturation, saturated gas used It is ammonia and silane, saturation process time 100min, ammonia flow 4500ml/min, silane flow rate 550ml/min, radio-frequency power 4500W, process pressure 150Pa;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking, be ready for saturation again;
S7, again saturation:Again satisfy and to graphite boat piece saturation again to graphite stuck point 1 carry out short time saturation, make boat piece and Stuck point plates the silicon nitride layer of different-thickness, then saturation process time 60min, ammonia flow 4000ml/min, silane flow rate respectively 500ml/min, radio-frequency power 4500W, process pressure 150Pa;
S8, plated film:It is normally carried out coating process.
Embodiment 3
The present invention provides a kind of graphite boat saturation process of solar cell, include the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 15% hydrofluoric acid solution removal graphite boat piece, when scavenging period 4 is small;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times 8 it is small when rinse every time plus spray, for the first time rinsing 1 Hour, when second of rinsing 2 is small, when third time rinsing 2 is small, when the 3rd rinsing 3 is small;
S3, drying:The graphite boat completed to cleaning is dried with baking oven, 100 degree of drying temperature, when drying time setting 8 is small;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points 1 according to the method, and porcelain bushing 2 is used for that 1 border of graphite stuck point is avoided to be coated with silicon nitride Film;
S5, saturation:Saturation graphite boat carries out graphite boat piece using PECVD plating silicon nitride layer and carries out saturation, saturated gas used It is ammonia and silane, saturation process time 110min, ammonia flow 5500ml/min, silane flow rate 750ml/min, radio-frequency power 5500W, process pressure 250Pa;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking, be ready for saturation again;
S7, again saturation:Again satisfy and to graphite boat piece saturation again to graphite stuck point 1 carry out short time saturation, make boat piece and Stuck point plates the silicon nitride layer of different-thickness, then saturation process time 30min, ammonia flow 5500ml/min, silane flow rate respectively 750ml/min, radio-frequency power 5500W, process pressure 250Pa;
S8, plated film:It is normally carried out coating process.
Embodiment 4
The present invention provides a kind of graphite boat saturation process of solar cell, include the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 15% hydrofluoric acid solution removal graphite boat piece, when scavenging period 4 is small;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times 8 it is small when rinse every time plus spray, for the first time rinsing 1 Hour, when second of rinsing 2 is small, when third time rinsing 2 is small, when the 3rd rinsing 3 is small;
S3, drying:The graphite boat completed to cleaning is dried with baking oven, 100 degree of drying temperature, when drying time setting 8 is small;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points 1 according to the method, and porcelain bushing 2 is used for that 1 border of graphite stuck point is avoided to be coated with silicon nitride Film;
S5, saturation:Saturation graphite boat carries out graphite boat piece using PECVD plating silicon nitride layer and carries out saturation, saturated gas used It is ammonia and silane, saturation process time 110min, ammonia flow 6000ml/min, silane flow rate 900ml/min, radio-frequency power 5500W, process pressure 250Pa;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking, be ready for saturation again;
S7, again saturation:Again satisfy and to graphite boat piece saturation again to graphite stuck point 1 carry out short time saturation, make boat piece and Stuck point plates the silicon nitride layer of different-thickness, then saturation process time 45min, ammonia flow 5500ml/min, silane flow rate respectively 750ml/min, radio-frequency power 5500W, process pressure 250Pa;
S8, plated film:It is normally carried out coating process.
Embodiment 5
The present invention provides a kind of graphite boat saturation process of solar cell, include the following steps:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 15% hydrofluoric acid solution removal graphite boat piece, when scavenging period 4 is small;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times 8 it is small when rinse every time plus spray, for the first time rinsing 1 Hour, when second of rinsing 2 is small, when third time rinsing 2 is small, when the 3rd rinsing 3 is small;
S3, drying:The graphite boat completed to cleaning is dried with baking oven, 100 degree of drying temperature, when drying time setting 8 is small;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points 1 according to the method, and porcelain bushing 2 is used for that 1 border of graphite stuck point is avoided to be coated with silicon nitride Film;
S5, saturation:Saturation graphite boat carries out graphite boat piece using PECVD plating silicon nitride layer and carries out saturation, saturated gas used It is ammonia and silane, saturation process time 120min, ammonia flow 6000ml/min, silane flow rate 900ml/min, radio-frequency power 5500W, process pressure 350Pa;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking, be ready for saturation again;
S7, again saturation:Again satisfy and to graphite boat piece saturation again to graphite stuck point 1 carry out short time saturation, make boat piece and Stuck point plates the silicon nitride layer of different-thickness, then saturation process time 60min, ammonia flow 5500ml/min, silane flow rate respectively 750ml/min, radio-frequency power 5500W, process pressure 350Pa;
S8, plated film:It is normally carried out coating process.
Finally it should be noted that:The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, still may be used To modify to the technical solution recorded in foregoing embodiments or carry out equivalent substitution to which part technical characteristic, Within the spirit and principles of the invention, any modifications, equivalent replacements and improvements are made should be included in the present invention's Within protection domain.

Claims (1)

1. a kind of graphite boat saturation process of solar cell, including removal silicon nitride layer, rinsing, drying, assembling, saturation, tear open Dress, again saturation and plated film, it is characterised in that:Processing step is as follows:
S1, removal silicon nitride layer:Silicon nitride layer is plated using 5%-20% hydrofluoric acid solutions removal graphite boat piece;
S2, rinsing:Graphite boat piece is rinsed using pure water, rinsing 4 times every time 2 it is small when;
S3, drying:Graphite boat piece is dried with baking oven, drying temperature 80-120 degree;
S4, assembling:Graphite boat and installation card point protection component are assembled, ceramic card point protection component internal diameter is entangled graphite boat card Point, protects all graphite stuck points according to the method, and porcelain bushing is used for that graphite stuck point border is avoided to be coated with silicon nitride film;
S5, saturation:Saturation graphite boat carries out graphite boat using PECVD plating boat saturation, and saturated gas used is ammonia and silicon Alkane;
S6, dismounting:It removes stuck point protection component and completes boat integral installation with checking;
S7, again saturation:Satisfy again and saturation mainly is carried out to graphite clamping point, saturated gas used is ammonia and silane;
S8, plated film:It is normally carried out coating process.
CN201711226025.3A 2017-11-29 2017-11-29 A kind of graphite boat saturation process of solar cell Pending CN108110083A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110523696A (en) * 2019-09-04 2019-12-03 韩华新能源(启东)有限公司 A kind of cleaning method of PECVD graphite boat
CN112795903A (en) * 2020-12-29 2021-05-14 理想晶延半导体设备(上海)股份有限公司 Production process applied to tubular coating equipment
CN113500378A (en) * 2021-07-26 2021-10-15 浙江爱旭太阳能科技有限公司 Method for replacing graphite boat blade staple bolt
CN114038937A (en) * 2021-10-09 2022-02-11 天合光能(宿迁)光电有限公司 Graphite boat saturation process for improving click printing of perc single crystal battery
CN115430652A (en) * 2022-09-05 2022-12-06 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 Saturation cleaning method for LPCVD quartz boat
CN116174377A (en) * 2023-02-27 2023-05-30 江苏和阳新材料有限公司 Full-automatic monocrystalline silicon wafer cleaning method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104064503A (en) * 2014-06-19 2014-09-24 奉化拓升商贸有限公司 Graphite boat cleaning process
CN105112888A (en) * 2015-08-27 2015-12-02 常州天合光能有限公司 Saturation method of graphite boat
CN107267963A (en) * 2017-06-22 2017-10-20 通威太阳能(合肥)有限公司 Method for improving color of PECVD (plasma enhanced chemical vapor deposition) coating film

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104064503A (en) * 2014-06-19 2014-09-24 奉化拓升商贸有限公司 Graphite boat cleaning process
CN105112888A (en) * 2015-08-27 2015-12-02 常州天合光能有限公司 Saturation method of graphite boat
CN107267963A (en) * 2017-06-22 2017-10-20 通威太阳能(合肥)有限公司 Method for improving color of PECVD (plasma enhanced chemical vapor deposition) coating film

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110523696A (en) * 2019-09-04 2019-12-03 韩华新能源(启东)有限公司 A kind of cleaning method of PECVD graphite boat
CN112795903A (en) * 2020-12-29 2021-05-14 理想晶延半导体设备(上海)股份有限公司 Production process applied to tubular coating equipment
CN113500378A (en) * 2021-07-26 2021-10-15 浙江爱旭太阳能科技有限公司 Method for replacing graphite boat blade staple bolt
CN114038937A (en) * 2021-10-09 2022-02-11 天合光能(宿迁)光电有限公司 Graphite boat saturation process for improving click printing of perc single crystal battery
CN115430652A (en) * 2022-09-05 2022-12-06 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 Saturation cleaning method for LPCVD quartz boat
CN116174377A (en) * 2023-02-27 2023-05-30 江苏和阳新材料有限公司 Full-automatic monocrystalline silicon wafer cleaning method

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