JP5876749B2 - 導電性物質前駆体組成物、及びそれを用いた導電性物質の製造方法 - Google Patents
導電性物質前駆体組成物、及びそれを用いた導電性物質の製造方法 Download PDFInfo
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- JP5876749B2 JP5876749B2 JP2012042709A JP2012042709A JP5876749B2 JP 5876749 B2 JP5876749 B2 JP 5876749B2 JP 2012042709 A JP2012042709 A JP 2012042709A JP 2012042709 A JP2012042709 A JP 2012042709A JP 5876749 B2 JP5876749 B2 JP 5876749B2
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- Prior art keywords
- conductive material
- precursor composition
- copper
- dialkylamine
- conductive
- 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.)
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- 239000002243 precursor Substances 0.000 title claims description 64
- 239000000126 substance Substances 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000004020 conductor Substances 0.000 claims description 92
- 125000005265 dialkylamine group Chemical group 0.000 claims description 42
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- 238000010438 heat treatment Methods 0.000 claims description 28
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical group CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 claims description 27
- 239000005749 Copper compound Substances 0.000 claims description 19
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 13
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Description
ギ酸イオンを有する銅化合物、オクチルアミン、及び炭素数7〜9のジアルキルアミンを含有しており、前記ジアルキルアミンの含有量が、前記オクチルアミン及び前記ジアルキルアミンの合計量に対して5〜35モル%であり、かつ、導電性インク組成物として用るることを特徴とする、導電性インク用導電性物質前駆体組成物である。
(a)前記導電性物質前駆体組成物を基材上に塗布した後に加熱処理を施して、導電性薄膜を形成する方法、
(b)前記導電性物質前駆体組成物を基材上にパターン塗布した後に加熱処理を施して、配線及び/又は電極を形成する方法、
(c)前記導電性物質前駆体組成物を、基材に設けたスルーホール内に充填した後に加熱処理を施して、当該スルーホールを介した両面及び/又は多層間の電気的導通部位を形成する方法、
(d)前記導電性物質前駆体組成物を基材上に塗布した後、当該基材と被接合物とを密着させ、加熱処理を施して、当該基材と被接合物とを接合させ、電気的導通接合部位を形成する方法、
等を挙げることができる。また、これらの製造方法に、さらに、表面処理、洗浄、加熱、冷却、焼成、精製、濾過、分級、乾燥、及びその他薬液での処理等の工程を適宜追加することができる。
各実施例及び比較例で得られた銅薄膜について、先ず、光学顕微鏡を用いて各銅薄膜の平均膜厚を測定して銅薄膜の体積を求め、次いで、温度25℃において、抵抗率計(Loresta−GP、三菱化学(株)製)を用いて、体積抵抗率(Ωcm)を4端子法で測定した。
各実施例及び比較例で得られた銅薄膜の表面を目視にて観察し、下記の基準:
A:破断、欠け、にじみが認められず、印刷性が良好である
B:破断、欠け、にじみが認められる
に基づいて評価をした。
各実施例及び比較例において得られた導電性物質前駆体組成物の塗布面積と、加熱処理後に得られた銅薄膜の表面面積とを目視により比較し、下記の基準:
A:面積に変化がみられない
B:面積がやや変化している
C:面積が大きな変化がみられる
に基づいて評価をした。なお、面積変化率が少ない程、形状安定性が良好であり、より微細な導電性物質の形成に適していることを示す。
各実施例及び比較例で得られた銅薄膜の表面を走査型電子顕微鏡(SEM)により観察した。
ノルマルオクチルアミン(オクチルアミン、関東化学社製)及びジノルマルブチルアミン(ジブチルアミン、関東化学社製)を、オクチルアミンとジブチルアミンとのモル比(オクチルアミンのモル数:ジブチルアミンのモル数)が1.8:0.2となるように混合し(オクチルアミン及びジブチルアミンの合計(全アミン)に対するジブチルアミンの含有量:10モル%)、これに、ギ酸銅(II)無水物(関東化学社製)を、前記全アミンに対して0.5倍モルとなるように加え、次いで、ガラス板上においてギ酸銅(II)無水物の結晶をヘラですり潰すように混合することによってギ酸銅(II)無水物の結晶を溶解させ、均一溶液状の導電性物質前駆体組成物を得た。導電性物質前駆体組成物の組成(モル比)を表1に示す。
導電性物質前駆体組成物の組成を表1に示す組成(モル比)としたこと以外は、実施例1と同様にして、導電性物質前駆体組成物及び2種の銅薄膜(導電性物質)をそれぞれ得た。
Claims (6)
- ギ酸イオンを有する銅化合物、オクチルアミン、及び炭素数7〜9のジアルキルアミンを含有しており、前記ジアルキルアミンの含有量が、前記オクチルアミン及び前記ジアルキルアミンの合計量に対して5〜35モル%であり、かつ、導電性インク組成物として用いることを特徴とする、導電性インク用導電性物質前駆体組成物。
- 前記ジアルキルアミンがジブチルアミンであることを特徴とする請求項1に記載の導電性インク用導電性物質前駆体組成物。
- 前記ジアルキルアミンの含有量が、前記オクチルアミン及び前記ジアルキルアミンの合計量に対して10〜30モル%であることを特徴とする請求項1又は2に記載の導電性インク用導電性物質前駆体組成物。
- 前記銅化合物の含有量が、前記オクチルアミン及び前記ジアルキルアミンの合計量1モルに対して0.01〜1モルであることを特徴とする請求項1〜3のうちのいずれか一項に記載の導電性インク用導電性物質前駆体組成物。
- 前記ジアルキルアミンがジノルマルブチルアミンであることを特徴とする請求項1〜4のうちのいずれか一項に記載の導電性インク用導電性物質前駆体組成物。
- 請求項1〜5のうちのいずれか一項に記載の導電性インク用導電性物質前駆体組成物を100〜300℃で加熱することにより導電性物質を得ることを特徴とする導電性物質の製造方法。
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