JP5666254B2 - 拡散剤組成物および不純物拡散層の形成方法 - Google Patents
拡散剤組成物および不純物拡散層の形成方法 Download PDFInfo
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- JP5666254B2 JP5666254B2 JP2010253234A JP2010253234A JP5666254B2 JP 5666254 B2 JP5666254 B2 JP 5666254B2 JP 2010253234 A JP2010253234 A JP 2010253234A JP 2010253234 A JP2010253234 A JP 2010253234A JP 5666254 B2 JP5666254 B2 JP 5666254B2
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- MHZDONKZSXBOGL-UHFFFAOYSA-N propyl dihydrogen phosphate Chemical compound CCCOP(O)(O)=O MHZDONKZSXBOGL-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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Description
縮合生成物(A)は、下記一般式(1)で表されるアルコキシシランを出発原料とし、下記一般式(1)で表されるアルコキシシランを加水分解して得られる反応生成物である。
(3)式中、R51、R52、R53及びR54は、それぞれ独立に上記R2と同じ有機基を表す。a、b、c及びdは、0≦a≦4、0≦b≦4、0≦c≦4、0≦d≦4であって、かつa+b+c+d=4の条件を満たす整数である。
(4)式中、R65は上記R1と同じ有機基を表す。R66、R67、及びR68は、それぞれ独立に上記R2と同じ有機基を表す。e、f、及びgは、0≦e≦3、0≦f≦3、0≦g≦3であって、かつe+f+g=3の条件を満たす整数である。
(5)式中、R70及びR71はそれぞれ独立に上記R1と同じ有機基を表す。R72、及びR73は、それぞれ独立に上記R2と同じ有機基を表す。h及びiは、0≦h≦2、0≦i≦2であって、かつh+i=2の条件を満たす整数である。
れる1種または2種以上を、酸触媒、水、有機溶剤の存在下で加水分解する方法で調製することができる。
酸触媒は有機酸、無機酸のいずれも使用することができる。無機酸としては、硫酸、リン酸、硝酸、塩酸等を使用することができ、中でも、リン酸、硝酸が好適である。有機酸としては、ギ酸、シュウ酸、フマル酸、マレイン酸、氷酢酸、無水酢酸、プロピオン酸、n−酪酸等のカルボン酸、および硫黄含有酸残基を有する有機酸を使用することができる。硫黄含有酸残基を有する有機酸としては、有機スルホン酸などが挙げられ、それらのエステル化物としては有機硫酸エステル、有機亜硫酸エステル等が挙げられる。これらの中で、特に有機スルホン酸、例えば、下記一般式(6)で表される化合物が好ましい。
[上記式(6)中、R13は、置換基を有していてもよい炭化水素基であり、Xはスルホン酸基である。]
不純物拡散成分(B)は、下記一般式(2)で表されるリン酸エステル(C)である。
図1を参照して、N型の半導体基板にインクジェット方式によりN型の不純物拡散成分(B)を含有する上述の拡散剤組成物を吐出してパターンを形成する工程と、拡散剤組成物中の不純物拡散成分(B)を半導体基板に拡散させる工程と、を含む不純物拡散層の形成方法と、これにより不純物拡散層が形成された半導体基板を備えた太陽電池の製造方法について説明する。図1(A)〜図1(C)は、実施形態に係る不純物拡散層の形成方法を含む太陽電池の製造方法を説明するための工程断面図である。
リン酸エステル系の実施例1、4〜6および非リン酸エステル系の比較例1の拡散剤組成物の初期粘度をそれぞれキャノンフェンスケ粘度計を用いて測定した。また、実施例1、4〜6および比較例1の拡散剤組成物を5℃で保管し、2日経過後、6日経過後の粘度をそれぞれキャノンフェンスケ粘度計を用いて測定した。実施例1、4〜6および比較例1の拡散剤組成物についての粘性評価結果を表2に示す。なお、表2において、初期粘度を基準としたときの、2日経過後、6日経過後の粘度の比率を括弧内に示す。
実施例1〜3、比較例1、2の拡散剤組成物を用いて、それぞれP型Si基板(面方位<100>、抵抗率5〜15Ω・cm)の上にスピン塗布法により塗布を行った。Si基板上に塗布された拡散剤組成物の膜厚は約7000Åである。100℃、200℃で各1分間のプリベークを実施した後、加熱炉(光洋サーモシステム製 VF−1000)を用いて窒素雰囲気下で950℃、30分間の加熱を行った。その後、Si基板を5%HF水溶液に10分間浸漬し、基板表面の酸化膜を除去した。なお、実施例1〜3、比較例1、2について、それぞれ、2点ずつ試料を作製した。各試料について、4探針法(国際電気製VR−70)により5カ所のシート抵抗値を測定し、実施例1〜3、比較例1、2についてそれぞれ計10点のシート抵抗値を得た後、計10点の平均値を算出した。このようにして得られたシート抵抗値の平均値を表3に示す。
Claims (5)
- 半導体基板への不純物拡散成分の印刷に用いられる拡散剤組成物であって、
下記一般式(1)で表されるアルコキシシランを出発原料とする縮合生成物(A)と、不純物拡散成分(B)とを含有し、
不純物拡散成分(B)が下記一般式(2)で表されるリン酸エステル(C)であることを特徴とする拡散剤組成物。
- 前記リン酸エステル(C)の含有量が組成物全体を基準として50質量%以下である請求項1に記載の拡散剤組成物。
- 組成物全体を基準とする水の含有量が1質量%以下である請求項1または2に記載の拡散剤組成物。
- 半導体基板に、請求項1乃至3のいずれか1項に記載の拡散剤組成物を塗布してパターンを形成するパターン形成工程と、
前記拡散剤組成物の不純物拡散成分(B)を前記半導体基板に拡散させる拡散工程と、
を含むことを特徴とする不純物拡散層の形成方法。 - 前記半導体基板が太陽電池に用いられる請求項4に記載の不純物拡散層の形成方法。
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TW100139944A TWI543986B (zh) | 2010-11-11 | 2011-11-02 | A diffusing agent composition and a method for forming an impurity diffusion layer |
US13/292,461 US20120122306A1 (en) | 2010-11-11 | 2011-11-09 | Diffusing agent composition, and method for forming an impurity diffusion layer |
KR1020110116839A KR101869099B1 (ko) | 2010-11-11 | 2011-11-10 | 확산제 조성물 및 불순물 확산층의 형성 방법 |
CN201110365158.5A CN102468439B (zh) | 2010-11-11 | 2011-11-11 | 扩散剂组合物及杂质扩散层的形成方法 |
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JP2005123431A (ja) * | 2003-10-17 | 2005-05-12 | Sanken Electric Co Ltd | 液状不純物源材料及びこれを使用した半導体装置の製造方法 |
JP2006156646A (ja) | 2004-11-29 | 2006-06-15 | Sharp Corp | 太陽電池の製造方法 |
JP4481869B2 (ja) * | 2005-04-26 | 2010-06-16 | 信越半導体株式会社 | 太陽電池の製造方法及び太陽電池並びに半導体装置の製造方法 |
JP2007049079A (ja) * | 2005-08-12 | 2007-02-22 | Sharp Corp | マスキングペースト、その製造方法およびマスキングペーストを用いた太陽電池の製造方法 |
JP5026008B2 (ja) * | 2006-07-14 | 2012-09-12 | 東京応化工業株式会社 | 膜形成組成物 |
KR101631711B1 (ko) * | 2008-03-21 | 2016-06-17 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 확산용 인 페이스트 및 그것을 이용한 태양 전지의 제조 방법 |
JP5357442B2 (ja) * | 2008-04-09 | 2013-12-04 | 東京応化工業株式会社 | インクジェット用拡散剤組成物、当該組成物を用いた電極及び太陽電池の製造方法 |
JP5441362B2 (ja) * | 2008-05-30 | 2014-03-12 | 富士フイルム株式会社 | 研磨液及び研磨方法 |
JP5646950B2 (ja) * | 2009-11-06 | 2014-12-24 | 東京応化工業株式会社 | マスク材組成物、および不純物拡散層の形成方法 |
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CN102468439A (zh) | 2012-05-23 |
CN102468439B (zh) | 2015-09-30 |
US9620666B2 (en) | 2017-04-11 |
TW201233681A (en) | 2012-08-16 |
KR20120050909A (ko) | 2012-05-21 |
KR101869099B1 (ko) | 2018-06-19 |
US20120122306A1 (en) | 2012-05-17 |
US20150140718A1 (en) | 2015-05-21 |
JP2012104721A (ja) | 2012-05-31 |
TWI543986B (zh) | 2016-08-01 |
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