CN104022187B - N型晶体硅太阳能电池的选择性发射结结构的实现方法 - Google Patents

N型晶体硅太阳能电池的选择性发射结结构的实现方法 Download PDF

Info

Publication number
CN104022187B
CN104022187B CN201410275382.9A CN201410275382A CN104022187B CN 104022187 B CN104022187 B CN 104022187B CN 201410275382 A CN201410275382 A CN 201410275382A CN 104022187 B CN104022187 B CN 104022187B
Authority
CN
China
Prior art keywords
emitter junction
crystalline silicon
type crystalline
junction structure
type
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.)
Active
Application number
CN201410275382.9A
Other languages
English (en)
Other versions
CN104022187A (zh
Inventor
盛赟
袁声召
王伟
蔡文浩
盛健
张淳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trina Solar Co Ltd
Original Assignee
Changzhou Trina Solar Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Trina Solar Energy Co Ltd filed Critical Changzhou Trina Solar Energy Co Ltd
Priority to CN201410275382.9A priority Critical patent/CN104022187B/zh
Publication of CN104022187A publication Critical patent/CN104022187A/zh
Application granted granted Critical
Publication of CN104022187B publication Critical patent/CN104022187B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01L31/1804Processes 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
    • 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
    • Y02E10/547Monocrystalline silicon PV cells
    • 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

Landscapes

  • 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

本发明公开了一种N型晶体硅太阳能电池的选择性发射结结构的实现方法,该方法的步骤如下:a)运用硼扩散在N型晶体硅太阳能电池的衬底上形成P型发射结,并且在硼原子推进扩散后,进行氧气气氛的高温处理,其中,氧气流量和炉腔的体积比为0.01~0.15slm/L,温度为800℃~1100℃,时间为5min~60min;b)通过刻蚀方法刻蚀预设的发射结金属化区域,直至高扩散浓度位置,从而形成选择性发射结结构。本发明能够保证N型太阳能选择性发射结结构的金属化区域具有较高的掺杂浓度和非金属化区域具有较低的掺杂浓度,获得良好的发射结钝化和电学接触效果。

Description

N型晶体硅太阳能电池的选择性发射结结构的实现方法
技术领域
本发明涉及一种N型晶体硅太阳能电池的选择性发射结结构的实现方法。
背景技术
目前,针对N型太阳能电池硼扩散发射结的浓度特性,通常的选择刻蚀非金属化区域的方法并不合适。一方面,要求刻蚀较大深度(数百纳米)才能有效降低非金属化区域的扩散浓度,较大的刻蚀量不仅破坏正面发射结太阳能电池的绒面陷光结构,也会影响刻蚀的均匀性;另一方面,金属化区域表面浓度较低,不能有效地减少该区域的少子复合和接触电阻率。
发明内容
本发明所要解决的技术问题是克服现有技术的缺陷,提供一种N型晶体硅太阳能电池的选择性发射结结构的实现方法,它能够保证N型太阳能选择性发射结结构的金属化区域具有较高的掺杂浓度和非金属化区域具有较低的掺杂浓度,获得良好的发射结钝化和电学接触效果。
为了解决上述技术问题,本发明的技术方案是:一种N型晶体硅太阳能电池的选择性发射结结构的实现方法,该方法的步骤如下:
a)运用硼扩散在N型晶体硅太阳能电池的衬底上形成P型发射结,并且在硼原子推进扩散后,进行氧气气氛的高温处理,其中,氧气流量和炉腔的体积比为0.01~0.15slm/L,温度为800℃~1100℃,时间为5min~60min;
b)通过刻蚀方法刻蚀预设的发射结金属化区域,直至高扩散浓度位置,从而形成选择性发射结结构。
进一步,所述的刻蚀深度为20nm~300nm。
进一步,所述的刻蚀方法为丝网印刷刻蚀浆料法或激光销蚀法。
采用了上述技术方案后,本发明具有以下的有益效果:
1、本发明方法实现了N型太阳能选择性发射结结构,它的金属化区域具有较高的掺杂浓度和非金属化区域具有较低的掺杂浓度,获得了良好的发射结钝化和电学接触效果;
2、本发明只需要较少的刻蚀量,不会破坏绒面陷光结构,保证较好的刻蚀均匀性。
3、本发明了兼容N型太阳能电池的钝化和金属化工艺。
附图说明
图1为本发明的选择性发射结结构的结构示意图;
其中,1为N型衬底;2为非刻蚀区域;3为刻蚀区域。
具体实施方式
为了使本发明的内容更容易被清楚地理解,下面根据具体实施例并结合附图,对本发明作进一步详细的说明。
如图1所示,一种N型晶体硅太阳能电池的选择性发射结结构的实现方法,该方法的步骤如下:
a)运用硼扩散在N型晶体硅太阳能电池的衬底上形成P型发射结,并且在硼原子推进扩散后,进行氧气气氛的高温处理,其中,氧气流量和炉腔的体积比为0.01~0.15slm/L,温度为800℃~1100℃,时间为5min~60min;
b)通过刻蚀方法刻蚀预设的发射结金属化区域,直至高扩散浓度位置,从而形成选择性发射结结构,如图1所示。
所述的刻蚀深度为20nm~300nm,刻蚀深度根据不同硼扩散工艺选择。
所述的刻蚀方法为丝网印刷刻蚀浆料法或激光销蚀法。根据丝网印刷和激光加工精度,刻蚀的图形最小尺寸为10μm至1000μm。
本发明的工作原理如下:
氧气气氛的硼扩散过程中,高温驱动硼原子扩散进入N型晶体硅形成P型发射结,而已扩散的硼原子分凝到表面的含硼氧化硅中,由此形成表面浓度较低,而距表面一定深度(数十至数百纳米)处浓度最高的扩散浓度曲线,再通过有选择地刻蚀发射结的金属化区域,使其达到高扩散浓度位置,从而获得非金属化区域掺杂浓度较低,金属化区域掺杂浓度较高的发射结结构,该结构有利于减少发射结的饿歇复合和表面复合,获得良好的发射结钝化,同时保证金属化区域较少的少子复合和良好的电学接触,因此提高太阳能电池转换效率。
以上所述的具体实施例,对本发明解决的技术问题、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (3)

1.一种N型晶体硅太阳能电池的选择性发射结结构的实现方法,其特征在于该方法的步骤如下:
a)运用硼扩散在N型晶体硅太阳能电池的衬底上形成P型发射结,并且在硼原子推进扩散后,进行氧气气氛的高温处理,其中,氧气流量和炉腔的体积比为0.01~0.15slm/L,温度为800℃~1100℃,时间为5min~60min;氧气气氛的硼扩散过程中,驱动硼原子扩散进入N型晶体硅形成P型发射结,而已扩散的硼原子分凝到表面的含硼氧化硅中,由此形成表面扩散浓度较低,而距表面一定深度处浓度最高的结构;
b)通过刻蚀方法刻蚀预设的发射结金属化区域,直至高扩散浓度位置,从而形成选择性发射结结构。
2.根据权利要求1所述的N型晶体硅太阳能电池的选择性发射结结构的实现方法,其特征在于:所述的刻蚀深度为20nm~300nm。
3. 根据权利要求1或2所述的N型晶体硅太阳能电池的选择性发射结结构的实现方法,其特征在于:所述的刻蚀方法为丝网印刷刻蚀浆料法或激光销蚀法。
CN201410275382.9A 2014-06-19 2014-06-19 N型晶体硅太阳能电池的选择性发射结结构的实现方法 Active CN104022187B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410275382.9A CN104022187B (zh) 2014-06-19 2014-06-19 N型晶体硅太阳能电池的选择性发射结结构的实现方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410275382.9A CN104022187B (zh) 2014-06-19 2014-06-19 N型晶体硅太阳能电池的选择性发射结结构的实现方法

Publications (2)

Publication Number Publication Date
CN104022187A CN104022187A (zh) 2014-09-03
CN104022187B true CN104022187B (zh) 2016-08-17

Family

ID=51438848

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410275382.9A Active CN104022187B (zh) 2014-06-19 2014-06-19 N型晶体硅太阳能电池的选择性发射结结构的实现方法

Country Status (1)

Country Link
CN (1) CN104022187B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105914261B (zh) * 2016-06-02 2018-03-06 浙江晶科能源有限公司 一种黑硅电池的制作方法和装置
CN105957919B (zh) * 2016-06-02 2017-09-22 浙江晶科能源有限公司 一种黑硅电池的制造方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794845A (zh) * 2010-03-15 2010-08-04 常州天合光能有限公司 一种一次扩散制备选择性发射极的方法
CN102437232A (zh) * 2011-03-24 2012-05-02 无锡市佳诚太阳能科技有限公司 一种n型晶体硅太阳能电池用pn结制备方法
CN103632933A (zh) * 2013-11-29 2014-03-12 英利集团有限公司 N型硅片的硼扩散方法、晶体硅太阳能电池及其制作方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100993513B1 (ko) * 2008-10-06 2010-11-10 엘지전자 주식회사 태양전지

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794845A (zh) * 2010-03-15 2010-08-04 常州天合光能有限公司 一种一次扩散制备选择性发射极的方法
CN102437232A (zh) * 2011-03-24 2012-05-02 无锡市佳诚太阳能科技有限公司 一种n型晶体硅太阳能电池用pn结制备方法
CN103632933A (zh) * 2013-11-29 2014-03-12 英利集团有限公司 N型硅片的硼扩散方法、晶体硅太阳能电池及其制作方法

Also Published As

Publication number Publication date
CN104022187A (zh) 2014-09-03

Similar Documents

Publication Publication Date Title
CN107482079A (zh) 选择性发射结及隧穿氧化高效n型电池制备方法
CN106024927A (zh) 硅基太阳能电池及其制备方法
MY156090A (en) Back junction solar cell with selective front surface field
CN104269457B (zh) 一种基于离子注入工艺的n型ibc硅太阳能电池制作方法
CN105826409B (zh) 一种局部背场n型太阳能电池的制备方法
CN103165754A (zh) 一种抗电势诱导衰减的太阳能电池的制备工艺
CN102544195A (zh) 太阳能电池及其制作方法
CN104300032A (zh) 一种单晶硅太阳能离子注入工艺
Yadav et al. c-Si solar cells formed from spin-on phosphoric acid and boric acid
CN101950763B (zh) 基于硅线阵列掺磷的芯壳型结构太阳能电池及其制备方法
CN106104814B (zh) 用于生产具有同时回蚀刻的掺杂区的太阳能电池的方法
CN106796964B (zh) 太阳能电池及太阳能电池的制造方法
JP6053764B2 (ja) 選択エミッタを有する光電池の製造方法
CN104022187B (zh) N型晶体硅太阳能电池的选择性发射结结构的实现方法
CN106486554A (zh) 一种实现n型双面电池隧穿氧化层钝化的方法
Wang et al. Selective nano-emitter fabricated by silver assisted chemical etch-back for multicrystalline solar cells
CN102487103A (zh) 太阳能电池及其制备方法
CN101931030B (zh) 纳米改性高效率低成本多晶硅太阳能电池制备工艺
Xiao et al. The study of defect removal etching of black silicon for solar cells
CN107148681A (zh) 太阳能电池用基板的制造方法及太阳能电池用基板
CN209199966U (zh) 一种低成本p型全背电极晶硅太阳电池
CN106133922A (zh) 太阳能电池的制造方法以及太阳能电池
CN103730541B (zh) 太阳能电池纳米发射极及其制备方法
CN104851925B (zh) 一种局部背接触太阳能电池的背面开口结构
CN103227244A (zh) N型太阳能电池及其选择性背场制备方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Sheng Bin

Inventor after: Gao Jifan

Inventor after: Yuan Shengzhao

Inventor after: Wang Wei

Inventor after: Cai Wenhao

Inventor after: Sheng Jian

Inventor before: Sheng Bin

Inventor before: Yuan Shengzhao

Inventor before: Wang Wei

Inventor before: Cai Wenhao

Inventor before: Sheng Jian

Inventor before: Zhang Chun

CB03 Change of inventor or designer information
CP01 Change in the name or title of a patent holder

Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2

Patentee after: TRINASOLAR Co.,Ltd.

Address before: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2

Patentee before: trina solar Ltd.

CP01 Change in the name or title of a patent holder
CP03 Change of name, title or address

Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2

Patentee after: trina solar Ltd.

Address before: Tianhe Electronic Industrial Park Road 213022 north of Jiangsu Province, Changzhou City, No. 2

Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd.

CP03 Change of name, title or address