JP2020503645A - ナノワイヤ透明電極およびその製造方法 - Google Patents
ナノワイヤ透明電極およびその製造方法 Download PDFInfo
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Classifications
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- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
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- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
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Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
- Powder Metallurgy (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
Description
Rm≦55Ω/sq.
0.5Rm≦Rloc(i)≦1.5Rm
(R500000−R0)/R0x100≦3.0(%)
第2スペクトル:前記透明絶縁性基材上に、金属ナノワイヤ、有機バインダー、および前記有機バインダーを溶解する溶媒を含むワイヤ分散液を塗布した後、溶媒が揮発除去された状態の基準体の紫外線−可視光吸光スペクトル
第3スペクトル:前記第2スペクトルから第1スペクトルを除去して得られるスペクトル
0.95≦HTCF/HREF≦1.05
0.95≦TTCF/TREF≦1.05
0.5≦hc/(d1+d2)≦0.7
0.6do≦dnc≦1do
Rm≦55Ω/sq.
0.5Rm≦Rloc(i)≦1.5Rm
(R500000−R0)/R0x100≦3.0(%)
第2スペクトル:前記透明絶縁性基材上に、金属ナノワイヤ、有機バインダー、および前記有機バインダーを溶解する溶媒を含むワイヤ分散液を塗布した後、溶媒が揮発除去された状態の基準体の紫外線−可視光吸光スペクトル、
第3スペクトル:前記第2スペクトルから第1スペクトルを除去して得られるスペクトル。
0.95≦HTCF/HREF≦1.05
0.95≦TTCF/TREF≦1.05
0.5≦hc/(d1+d2)≦0.7
0.6do≦dnc≦1do
Claims (17)
- 透明絶縁性基材と、金属ナノワイヤネットワークと、を含み、関係式1および関係式2を満たす、ナノワイヤ透明電極。
(関係式1)
Rm≦55Ω/sq.
(関係式1中、Rmは、幅10cmおよび長さ2mのサイズを有するナノワイヤ透明電極の平均面抵抗である。)
(関係式2)
0.5Rm≦Rloc(i)≦1.5Rm
(関係式2中、Rlocは、幅10cmおよび長さ2mのサイズを有するナノワイヤ透明電極の全領域を2cmx2cmの面積に均等分割して規定された500個の分割領域のうち、一分割領域での面抵抗を意味し、Rloc(i)は、500個の分割領域に順に番号を付与したときに、i番に該当する分割領域の面抵抗を意味し、iは1〜500の自然数である。) - 下記関係式3をさらに満たす、請求項1に記載のナノワイヤ透明電極。
(関係式3)
(R500000−R0)/R0x100≦3.0(%)
(関係式3中、R0は、ナノワイヤ透明電極の平均面抵抗であり、R500000は、5cmx5cmサイズのナノワイヤ透明電極を対象として、1mm曲率半径下で500,000回の曲げ試験を行った後の平均面抵抗である。) - 90%以上の光透過率(Transmittance)および1.5%以下のヘイズ(Haze)を有する、請求項1に記載のナノワイヤ透明電極。
- 前記金属ナノワイヤネットワークは、前記透明絶縁性基材上に、金属ナノワイヤ、有機バインダー、および前記有機バインダーを溶解する溶媒を含むワイヤ分散液を塗布した後、下記第3スペクトルの吸光ピークのうち相対的に最も強度が大きい吸光ピークである第1ピークの中心波長に該当する光が除去されるように白色光をフィルタリングし、フィルタリングされた光を照射することで得られる、請求項1に記載のナノワイヤ透明電極。
第1スペクトル:前記透明絶縁性基材の紫外線−可視光吸光スペクトル
第2スペクトル:前記透明絶縁性基材上に、金属ナノワイヤ、有機バインダー、および前記有機バインダーを溶解する溶媒を含むワイヤ分散液を塗布した後、溶媒が揮発除去された状態の基準体の紫外線−可視光吸光スペクトル
第3スペクトル:前記第2スペクトルから第1スペクトルを除去して得られるスペクトル - 下記関係式4および関係式5をさらに満たす、請求項4に記載のナノワイヤ透明電極。
(関係式4)
0.95≦HTCF/HREF≦1.05
(関係式4中、HTCFは、ナノワイヤ透明電極のヘイズ(%)であり、HREFは、前記透明絶縁性基材に前記ワイヤ分散液が塗布され、光焼結される前の状態の基準体のヘイズ(%)である。)
(関係式5)
0.95≦TTCF/TREF≦1.05
(関係式5中、TTCFは、ナノワイヤ透明電極の光透過率(%)であり、TREFは、前記透明絶縁性基材に前記ワイヤ分散液が塗布され、光焼結される前の状態の基準体の光透過率(%)である。) - 前記金属ナノワイヤネットワークは、2つ以上の金属ナノワイヤが互いに交差する交差領域を含み、交差領域の高さが下記関係式6を満たす、請求項1に記載のナノワイヤ透明電極。
(関係式6)
0.5≦hc/(d1+d2)≦0.7
(関係式6中、d1は、透明絶縁性基材の表面を基準として、交差領域を成す2つ以上の金属ナノワイヤのうち一金属ナノワイヤの高さを意味し、d2は、透明絶縁性基材の表面を基準として、同一交差領域を成す2つ以上の金属ナノワイヤのうち他の金属ナノワイヤの高さを意味し、hcは、透明絶縁性基材の表面を基準とした交差領域の高さを意味する。) - 前記金属ナノワイヤネットワークは、2つ以上の金属ナノワイヤが互いに交差する交差領域を含み、前記交差領域における上部に位置する金属ナノワイヤが下記関係式7を満たす、請求項1に記載のナノワイヤ透明電極。
(関係式7)
0.6do≦dnc≦1do
(関係式7中、doは、交差領域における上部に位置する金属ナノワイヤにおいて、ナノワイヤの長さ方向に少なくとも100nm以上他の金属ナノワイヤと接しない地点での、透明絶縁性基材の表面を基準とした金属ナノワイヤの高さであり、dncは、交差領域における上部に位置する同一金属ナノワイヤにおいて、交差領域の端部から金属ナノワイヤの長さ方向に延びる50nm以内の領域で、透明絶縁性基材の表面を基準とした金属ナノワイヤの高さである。) - 透明絶縁性基材の紫外線−可視光吸光スペクトルである第1スペクトル、前記透明絶縁性基材上に、表面プラズモンが発生する金属ナノワイヤ、有機バインダー、および前記有機バインダーを溶解する溶媒を含むワイヤ分散液を塗布した後、溶媒が揮発除去された状態の基準体の紫外線−可視光吸光スペクトルである第2スペクトル、および前記第2スペクトルから第1スペクトルを除去して得られた第3スペクトルを基準として、
前記透明絶縁性基材上に前記ワイヤ分散液を塗布した後、前記第3スペクトルの吸光ピークのうち相対的に最も強度が大きい吸光ピークである第1ピークの中心波長に該当する光が除去されるように白色光をフィルタリングし、フィルタリングされた光を照射して光焼結するステップを含む、ナノワイヤ透明電極の製造方法。 - 前記フィルタリング時に、前記第3スペクトルの吸光ピークのうち相対的に二番目に強度が大きい吸光ピークである第2ピークの中心波長に該当する光が通過するようにフィルタリングが行われる、請求項8に記載のナノワイヤ透明電極の製造方法。
- 前記フィルタリング時に、前記第2ピークの中心波長の1.3倍を超える波長の光が除去されるようにフィルタリングが行われる、請求項9に記載のナノワイヤ透明電極の製造方法。
- 前記フィルタリングはバンドパスフィルタリングであり、フィルタリングされた光の最小波長は、前記第1ピークの中心波長と前記第2ピークの中心波長との間に位置する、請求項9に記載のナノワイヤ透明電極の製造方法。
- 前記フィルタリングされた光の最大波長と最小波長との差である帯域幅が150nm以下である、請求項11に記載のナノワイヤ透明電極の製造方法。
- 波長を基準とした前記バンドパスフィルタリングの通過帯域の最小波長は380〜410nmであり、最大波長は430nm〜550nmである、請求項11に記載のナノワイヤ透明電極の製造方法。
- 前記フィルタリングされた光を用いた光焼結時に、前記フィルタリングされた光のフルエンス(fluence)は6〜10J/cm2である、請求項8に記載のナノワイヤ透明電極の製造方法。
- 前記ワイヤ分散液の塗布および光焼結が連続工程である、請求項8に記載のナノワイヤ透明電極の製造方法。
- ロール状に巻き取られた透明絶縁性基材を巻き解く巻き解きステップと、
巻き解かれた透明絶縁性基材にワイヤ分散液を塗布する塗布ステップと、
ワイヤ分散液が塗布された透明絶縁性基材に、フィルタリングされた光を照射する光焼結ステップと、
光が照射された透明絶縁性基材を洗浄し、さらにロール状に巻き戻す巻き戻しステップと、を含む、請求項8に記載のナノワイヤ透明電極の製造方法。 - 請求項8から16の何れか一項に記載の製造方法により製造されたナノワイヤ透明電極。
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