CN115377252A - 一种抑制pecvd法生长多晶硅表面爆膜的方法 - Google Patents
一种抑制pecvd法生长多晶硅表面爆膜的方法 Download PDFInfo
- Publication number
- CN115377252A CN115377252A CN202211298705.7A CN202211298705A CN115377252A CN 115377252 A CN115377252 A CN 115377252A CN 202211298705 A CN202211298705 A CN 202211298705A CN 115377252 A CN115377252 A CN 115377252A
- Authority
- CN
- China
- Prior art keywords
- micro
- inhibiting
- polycrystalline silicon
- texturing
- pecvd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 88
- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 36
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 title claims abstract description 34
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 18
- 238000004880 explosion Methods 0.000 title claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 29
- 239000010703 silicon Substances 0.000 claims abstract description 29
- 238000000151 deposition Methods 0.000 claims abstract description 17
- 230000005641 tunneling Effects 0.000 claims abstract description 9
- 229920005591 polysilicon Polymers 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 11
- 238000002310 reflectometry Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 8
- -1 alkyl vinyl ether Chemical compound 0.000 claims description 6
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical group [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000002738 chelating agent Substances 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 229930182478 glucoside Natural products 0.000 claims description 3
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 3
- RSDMPVNLUKICCT-CBQIKETKSA-N (2s,3r,4s,5s,6r)-2-ethenoxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound OC[C@H]1O[C@H](OC=C)[C@H](O)[C@@H](O)[C@@H]1O RSDMPVNLUKICCT-CBQIKETKSA-N 0.000 claims description 2
- 125000004193 piperazinyl group Chemical group 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 238000007517 polishing process Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 33
- 239000010408 film Substances 0.000 description 16
- 238000002161 passivation Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 150000004885 piperazines Chemical class 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 1
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 1
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 150000008131 glucosides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/24—Deposition of silicon only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02587—Structure
- H01L21/0259—Microstructure
- H01L21/02595—Microstructure polycrystalline
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- H01L31/04—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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Photovoltaic Devices (AREA)
Abstract
本发明涉及太阳能电池技术领域,具体公开一种抑制PECVD法生长多晶硅表面爆膜的方法。所述方法包括以下步骤:将硅片进行微制绒工序,形成微制绒表面;采用PECVD法在所述微制绒表面上依次沉积隧穿氧化层和多晶硅层。采用本发明提供的方法能够在保证不降低TOPCon太阳能电池转化效率的前提下,还能避免采用PECVD法沉积多晶硅层发生爆膜的问题,方法简单,只是在常规抛光的过程中,添加微制绒工序,工艺步骤简单,无需增加新工艺和新设备,无其他成本增加,有利于工业化生产,对提高TOPCon太阳能电池的成品率具有重要意义。
Description
技术领域
本发明涉及太阳能电池技术领域,尤其涉及一种抑制PECVD法生长多晶硅表面爆膜的方法。
背景技术
近年来,随着能源需求的不断提高,在传统化石燃料能源枯竭,以及人们环保意识的增强的背景下,发展清洁环保、可再生能源成为人类发展的当务之急。太阳能是一种清洁的可再生的能源,取之不尽,用之不竭,因此开发和利用以太阳能为代表的新能源具有广阔的应用前景。
TOPCon电池是在硅片表面包括使用一层超薄的氧化层和掺杂的薄膜硅进行钝化的新型N型太阳能电池,具有更佳的稳定性和更高的效率潜能,是高效N型电池的发展趋势。TOPCon电池制备的关键在于形成包括超薄氧化层和掺杂薄膜硅的钝化层,主要采用以下生长方式:其一,采用LPCVD法沉积超薄氧化硅层和多晶硅层,再进行磷扩散进行磷掺杂,该方法与现有PERC工艺的兼容度较高,但是LPCVD方式成膜速度慢、需配合磷扩散进行掺杂、绕镀难去除,不适合工业生产;其二,采用PECVD方法沉积超薄氧化硅层,同时原位掺杂多晶硅层,再进行退火,该方法因具有成膜速度快、绕镀易清洗、可以沉积薄膜的同时进行原位掺杂等优势,逐渐得到研究人员的关注。但是采用PECVD方式生长的钝化层表层易爆膜,成为该技术的一大痛点。爆膜会影响电池表面的钝化效果,进而影响电池效率,成为制约该技术发展的关键问题之一。
目前通常采用以下方式缓解爆膜问题:如提高沉积温度,或提高气体占比R(R=H2/SiH4),将a-Si:H由μ-Si:H来替代、增加一层nc-SiC:H缓冲层等方式。但这些技术不仅在增加工艺步骤的同时导致能耗的增加,而且新调整或新增加的工艺并不成熟,在实施过程中还会带来波动,影响电池整体合格率,最终导致电池成本显著增加。因此,亟需寻找一种低成本、重复性高、合格率高的抑制爆膜的方法,对TOPCon太阳能电池的推广应用具有重要意义。
发明内容
鉴于此,本申请提供一种抑制PECVD法生长多晶硅表面爆膜的方法,对硅片进行微制绒,在表面上生长微小的金字塔结构,有利于过量H形成H2气体后的释放,进而有利于抑制采用PECVD法生长多晶硅层发生爆膜的问题。
为达到上述发明目的,本发明实施例采用了如下的技术方案:
一种抑制PECVD法生长多晶硅表面爆膜的方法,所述方法包括以下步骤:
将硅片进行微制绒工序,形成微制绒表面;
采用PECVD法在所述微制绒表面上依次沉积隧穿氧化层和多晶硅层。
相对于现有技术,本申请提供的抑制PECVD法生长多晶硅表面爆膜的方法具有以下优势:
本申请对硅片进行微制绒,进而在硅片表面上形成微小的绒面结构,该结构可以提供金字塔塔底、塔棱、塔尖等缺陷,使得采用PECVD法在微制绒表面上沉积多晶硅的过程中,生成的H2气体可以顺着金字塔塔底、塔棱、塔尖快速释放,避免多晶硅沉积过程中出现爆膜现象,显著提高电池的合格率,同时还能保证TOPCon太阳能电池具有优异的电池转化效率,有利于TOPCon太阳能电池的顺利推广。
本申请提供的抑制爆膜的方法简单,只是在常规抛光的过程中,添加微制绒工序,工艺步骤简单,无需增加新工艺和新设备,无其他成本增加,有利于工业化生产,对提高TOPCon太阳能电池的成品率具有重要意义。
可选的,所述微制绒表面的表面反射率为30%~40%。
进一步可选的,所述微制绒表面的表面反射率为37%~38.5%。
本申请通过优选的表面反射率既能保证在采用PECVD法沉积多晶硅过程中不发生爆膜的问题,还能保证TOPCon太阳能电池具有优异的转化效率。
可选的,所述微制绒表面的单面腐蚀深度为0.5μm~5μm。
本申请通过优选的单面腐蚀深度,能保证微制绒表面的表面反射率处于30%~40%之间,进而有利于后续采用PECVD法沉积隧穿氧化层和多晶硅层。
可选的,所述微制绒工序为:将硅片置于制绒剂中,于50℃~80℃条件下制绒1.5min~4.5min。
本申请通过优选的微制绒工序,在硅片表面形成特定表面反射率的微制绒表面,在保证不降低TOPCon太阳能电池转化效率的前提下,还能避免采用PECVD法沉积多晶硅层发生爆膜的问题。
可选的,所述制绒剂包括如下质量百分比的各组分:碱:0.1%~10%,添加剂0.05%~5%,余量为水。
可选的,所述碱为NaOH或KOH。
可选的,所述添加剂包括如下质量百分比的各组分:碱性物质:1%~2%,界面活性剂:5%~8%,螯合剂:5%~20%,消泡剂:5%~20%,催化剂:3%~8%,余量为水。
可选的,所述碱性物质为四甲基氢氧化铵、NaOH或KOH中的至少一种。
可选的,所述界面活性剂为烷基乙烯醚、葡萄苷或烷基硫酸钠的至少一种。
可选的,所述螯合剂为聚乙烯胺或烷基酰胺。
可选的,所述消泡剂为哌嗪衍生物。
可选的,所述催化剂为乙酸钠或乙醇钠。
本申请通过优选的制绒剂同时对硅片表面进行抛光和微制绒,使得硅片表面上形成大部分抛光、少部分形成微小的绒面结构,有利于抑制PECVD法沉积多晶硅层爆膜的问题。
可选的,所述硅片进行微制绒工序前,还包括对所述硅片进行抛光处理,且所述抛光处理的条件为:温度为50℃~80℃,时间为1.5min~4.5min。
本申请对抛光处理采用的抛光剂没有特别限定,采用本领域熟知的抛光剂即可。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例1
本发明实施例提供一种TOPCon太阳能电池的制备方法,包括以下步骤:
S1、对N型单晶硅片进行碱制绒,在硅片表面形成均匀的绒面结构,反射率10%;
S2、对制绒后的N型硅片,进行硼扩散掺杂,方块电阻为150Ω;
S3、对硼扩散后的N型硅片进行去边缘及背面绕扩散,并对硅片背表面进行抛光,背反射率为42%;
S4、对S3得到的硅片置于制绒剂中,于75℃条件下制绒2.5min,得到反射率为38.3%、腐蚀深度为2μm的微制绒表面;然后采用PECVD法在所述微制绒表面上依次沉积厚度为2nm的隧穿氧化层和厚度为100nm的多晶硅层;
所述制绒剂包括如下质量百分比的各组分:NaOH:5%,添加剂1.5%,余量为水;所述添加剂包括如下质量百分比的各组分:NaOH:1%,烷基乙烯醚:6%,聚乙烯胺:10%,哌嗪衍生物:10%,乙酸钠:5%,余量为水;
S5、在上述硅片表面进行磷扩散,形成磷掺杂多晶硅层,再于850℃温度下退火0.5h;
S6、对S5步骤得到的硅片进行化学清洗,去除绕镀到正面的多晶硅层;
S7、在S6步骤得到的硅片的正面沉积氧化铝,形成4nm的氧化铝钝化层;
S8、在上述氧化铝钝化层上沉积氮化硅,形成80nm的氮化硅钝化层;
S9、在S8得到的硅片的背面沉积氮化硅,形成80nm的氮化硅钝化层;
S10、印刷烧结,得到TOPCon太阳能电池。
实施例2
本发明实施例提供一种TOPCon太阳能电池的制备方法,与实施例1的不同的在于S4,具体为:
S4、对S3得到的硅片置于制绒剂中,于50℃条件下制绒1.5min,得到反射率为40%、腐蚀深度为0.5μm的微制绒表面;然后采用PECVD法在所述微制绒表面上依次沉积厚度为2nm的隧穿氧化层和厚度为100nm的多晶硅层;
上述制绒剂包括如下质量百分比的各组分:KOH:0.1%,添加剂5%,余量为水;所述添加剂包括如下质量百分比的各组分:四甲基氢氧化铵:1.5%,葡萄苷:8%,烷基酰胺:20%,哌嗪衍生物:20%,乙醇钠:8%,余量为水。
实施例3
本发明实施例提供一种TOPCon太阳能电池的制备方法,与实施例1的不同的在于S4,具体为:
S4、对S3得到的硅片置于制绒剂中,于83℃条件下制绒4.5min,得到反射率为35%、腐蚀深度为5μm的微制绒表面;然后采用PECVD法在所述微制绒表面上依次沉积厚度为2nm的隧穿氧化层和厚度为100nm的多晶硅层;
上述制绒剂包括如下质量百分比的各组分:NaOH:10%,添加剂0.05%,余量为水;所述添加剂包括如下质量百分比的各组分:KOH:2%,烷基硫酸钠:5%,聚乙烯胺:5%,哌嗪衍生物:5%,乙酸钠:5%,余量为水。
为了更好的说明本发明的技术方案,下面还通过对比例和本发明的实施例做进一步的对比。
对比例1
本对比例提供一种TOPCon太阳能电池的制备方法,与实施例1的不同的在于S4,具体为:
S4、在S3得到的硅片的背表面上,采用PECVD法依次沉积厚度为2nm的隧穿氧化层和厚度为100nm的多晶硅层。
为了更好的说明本发明实施例提供的TOPCon太阳能电池的特性,下面将实施例1~3以及对比例1制备的TOPCon太阳能电池进行电性能测试,测试结果如下表1所示。
表1
上述Eta为转化效率,单位为%。
从表1可以看出,采用本申请提供的抑制爆膜的方法,在微制绒表面上沉积隧穿氧化层和多晶硅层,在不降低TOPCon太阳能电池转化效率的前提下,还能有效避免采用PECVD法沉积多晶硅层发生爆膜的问题。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换或改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述方法包括以下步骤:
将硅片进行微制绒工序,形成微制绒表面;
采用PECVD法在所述微制绒表面上依次沉积隧穿氧化层和多晶硅层;
其中,所述微制绒表面的表面反射率为37%~38.5%。
2.如权利要求1所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述微制绒表面的单面腐蚀深度为0.5μm~5μm。
3.如权利要求1所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述微制绒工序为:将硅片置于制绒剂中,于50℃~80℃条件下制绒1.5min~4.5min。
4.如权利要求3所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述制绒剂包括如下质量百分比的各组分:碱:0.1%~10%,添加剂0.05%~5%,余量为水。
5.如权利要求4所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述碱为NaOH或KOH。
6.如权利要求4所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述添加剂包括如下质量百分比的各组分:碱性物质:1%~2%,界面活性剂:5%~8%,螯合剂:5%~20%,消泡剂:5%~20%,催化剂:3%~8%,余量为水。
7.如权利要求6所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述碱性物质为四甲基氢氧化铵、NaOH或KOH中的至少一种;和/或
所述界面活性剂为烷基乙烯醚、葡萄苷或烷基硫酸钠的至少一种;和/或
所述螯合剂为聚乙烯胺或烷基酰胺;和/或
所述消泡剂为哌嗪衍生物;和/或
所述催化剂为乙酸钠或乙醇钠。
8.如权利要求1所述的抑制PECVD法生长多晶硅表面爆膜的方法,其特征在于:所述硅片进行微制绒工序前,还包括对所述硅片进行抛光处理,且所述抛光处理的条件为:温度为50℃~80℃,时间为1.5min~4.5min。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211298705.7A CN115377252B (zh) | 2022-10-24 | 2022-10-24 | 一种抑制pecvd法生长多晶硅表面爆膜的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211298705.7A CN115377252B (zh) | 2022-10-24 | 2022-10-24 | 一种抑制pecvd法生长多晶硅表面爆膜的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115377252A true CN115377252A (zh) | 2022-11-22 |
CN115377252B CN115377252B (zh) | 2023-01-13 |
Family
ID=84073642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211298705.7A Active CN115377252B (zh) | 2022-10-24 | 2022-10-24 | 一种抑制pecvd法生长多晶硅表面爆膜的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115377252B (zh) |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108447942A (zh) * | 2018-03-09 | 2018-08-24 | 常州时创能源科技有限公司 | 多晶黑硅perc电池的抛光制绒工艺 |
CN110277471A (zh) * | 2019-05-17 | 2019-09-24 | 上海神舟新能源发展有限公司 | 基于晶体硅N型Poly发射结太阳能电池制作方法 |
CN110534595A (zh) * | 2019-09-06 | 2019-12-03 | 江西展宇新能源股份有限公司 | 一种perc双面太阳能电池及其制备方法 |
CN111584685A (zh) * | 2020-05-28 | 2020-08-25 | 江西展宇新能科技有限公司 | 一种新型太阳能电池及其制备方法 |
CN111584667A (zh) * | 2020-06-09 | 2020-08-25 | 山西潞安太阳能科技有限责任公司 | 一种新型N型晶硅TOPCon电池结构及其制备工艺 |
CN112071919A (zh) * | 2020-09-24 | 2020-12-11 | 山西潞安太阳能科技有限责任公司 | 一种新型P型晶硅TOPCon电池结构及其制备工艺 |
CN113502163A (zh) * | 2021-09-10 | 2021-10-15 | 杭州晶宝新能源科技有限公司 | 用于形成太阳电池背结构的化学助剂、其制备方法及应用 |
CN114267582A (zh) * | 2020-09-16 | 2022-04-01 | 松山湖材料实验室 | 不含氮的晶硅太阳能电池片抛光方法及其抛光液 |
CN114267580A (zh) * | 2020-09-16 | 2022-04-01 | 松山湖材料实验室 | 双面perc太阳能电池的背面结构刻蚀方法及其刻蚀液 |
WO2022105192A1 (zh) * | 2020-11-19 | 2022-05-27 | 江苏大学 | 一种基于PECVD技术的高效低成本N型TOPCon电池的制备方法 |
JP7082235B1 (ja) * | 2021-08-04 | 2022-06-07 | 上海晶科緑能企業管理有限公司 | 太陽電池及びその製造方法、太陽電池モジュール |
CN114664972A (zh) * | 2020-12-23 | 2022-06-24 | 比亚迪股份有限公司 | 一种硅片的抛光方法、太阳能电池片的制备方法及太阳能电池片 |
CN114823943A (zh) * | 2022-03-22 | 2022-07-29 | 湖州飞鹿新能源科技有限公司 | 绒面结构、包含其的单晶硅片、制绒方法及应用 |
CN115116842A (zh) * | 2022-02-19 | 2022-09-27 | 上海钧乾智造科技有限公司 | 含全氟取代基的聚乙烯胺共聚物在单晶硅片碱抛光中的应用 |
-
2022
- 2022-10-24 CN CN202211298705.7A patent/CN115377252B/zh active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108447942A (zh) * | 2018-03-09 | 2018-08-24 | 常州时创能源科技有限公司 | 多晶黑硅perc电池的抛光制绒工艺 |
CN110277471A (zh) * | 2019-05-17 | 2019-09-24 | 上海神舟新能源发展有限公司 | 基于晶体硅N型Poly发射结太阳能电池制作方法 |
CN110534595A (zh) * | 2019-09-06 | 2019-12-03 | 江西展宇新能源股份有限公司 | 一种perc双面太阳能电池及其制备方法 |
CN111584685A (zh) * | 2020-05-28 | 2020-08-25 | 江西展宇新能科技有限公司 | 一种新型太阳能电池及其制备方法 |
CN111584667A (zh) * | 2020-06-09 | 2020-08-25 | 山西潞安太阳能科技有限责任公司 | 一种新型N型晶硅TOPCon电池结构及其制备工艺 |
CN114267580A (zh) * | 2020-09-16 | 2022-04-01 | 松山湖材料实验室 | 双面perc太阳能电池的背面结构刻蚀方法及其刻蚀液 |
CN114267582A (zh) * | 2020-09-16 | 2022-04-01 | 松山湖材料实验室 | 不含氮的晶硅太阳能电池片抛光方法及其抛光液 |
CN112071919A (zh) * | 2020-09-24 | 2020-12-11 | 山西潞安太阳能科技有限责任公司 | 一种新型P型晶硅TOPCon电池结构及其制备工艺 |
WO2022105192A1 (zh) * | 2020-11-19 | 2022-05-27 | 江苏大学 | 一种基于PECVD技术的高效低成本N型TOPCon电池的制备方法 |
CN114664972A (zh) * | 2020-12-23 | 2022-06-24 | 比亚迪股份有限公司 | 一种硅片的抛光方法、太阳能电池片的制备方法及太阳能电池片 |
JP7082235B1 (ja) * | 2021-08-04 | 2022-06-07 | 上海晶科緑能企業管理有限公司 | 太陽電池及びその製造方法、太陽電池モジュール |
CN113502163A (zh) * | 2021-09-10 | 2021-10-15 | 杭州晶宝新能源科技有限公司 | 用于形成太阳电池背结构的化学助剂、其制备方法及应用 |
CN115116842A (zh) * | 2022-02-19 | 2022-09-27 | 上海钧乾智造科技有限公司 | 含全氟取代基的聚乙烯胺共聚物在单晶硅片碱抛光中的应用 |
CN114823943A (zh) * | 2022-03-22 | 2022-07-29 | 湖州飞鹿新能源科技有限公司 | 绒面结构、包含其的单晶硅片、制绒方法及应用 |
Also Published As
Publication number | Publication date |
---|---|
CN115377252B (zh) | 2023-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP4027395A1 (en) | Efficient back passivation crystalline silicon solar cell and manufacturing method therefor | |
WO2023178918A1 (zh) | 一种低成本接触钝化全背电极太阳能电池及其制备方法 | |
CN111029436B (zh) | 可改善LeTID现象的P型单晶PERC电池及其制作方法 | |
CN111900214B (zh) | 去除多晶硅绕镀的方法、太阳能电池及其制备方法 | |
CN101548395A (zh) | 具有改进的表面钝化的晶体硅太阳能电池的制造方法 | |
CN108963005A (zh) | 一种新型复合结构全背面异质结太阳电池及制备方法 | |
CN112490304A (zh) | 一种高效太阳能电池的制备方法 | |
JP2013526049A (ja) | シリコンウェハ上にn+pp+型又はp+nn+型の構造を作製する方法 | |
CN105576083A (zh) | 一种基于apcvd技术的n型双面太阳能电池及其制备方法 | |
CN110571304A (zh) | 一种钝化接触双面太阳电池的制作方法 | |
CN115394863A (zh) | 一种太阳电池及其制备方法 | |
CN109545656B (zh) | 氢化非晶硅薄膜制备方法 | |
CN110767772A (zh) | 局域接触钝化太阳电池的制备方法 | |
CN113921619A (zh) | 太阳能电池及其正面膜层结构及其制备方法、组件及系统 | |
CN114335237A (zh) | 一种晶体硅太阳能电池的制备方法及晶体硅太阳能电池 | |
CN115377252B (zh) | 一种抑制pecvd法生长多晶硅表面爆膜的方法 | |
CN116130558B (zh) | 一种新型全背电极钝化接触电池的制备方法及其产品 | |
CN101958364B (zh) | 一种背面钝化的太阳能电池的生产方法 | |
EP4307394A1 (en) | Perc battery back passivation structure, and perc battery and preparation method therefor | |
CN116130530A (zh) | Topcon太阳能电池及其制备方法 | |
CN110943146B (zh) | 一种perc太阳能电池的镀膜方法、制作方法及perc太阳能电池 | |
CN114005907A (zh) | 一种Topcon电池的制造方法 | |
CN114744077A (zh) | N型tbc晶硅太阳能电池的制造方法 | |
CN109301031B (zh) | N型双面电池的制作方法 | |
CN114203832B (zh) | 具有钝化接触层并叠加复合钝化层的铸造单晶硅钝化结构 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |