Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air
Cellulose paper is an attractive substrate for paper electronics because of its advantages of flexibility, biodegradability, easy incorporation into composites, low cost and eco-friendliness. However, the micrometre-sized pores of cellulose paper make robust/conductive films difficult to deposit ont...
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Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.172417 |
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doaj-ab50f727a79f476e8e4b2b97fd970b942020-11-25T04:06:37ZengThe Royal SocietyRoyal Society Open Science2054-57032018-01-015710.1098/rsos.172417172417Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in airShintaro SakuraiYusuke AkiyamaHideya KawasakiCellulose paper is an attractive substrate for paper electronics because of its advantages of flexibility, biodegradability, easy incorporation into composites, low cost and eco-friendliness. However, the micrometre-sized pores of cellulose paper make robust/conductive films difficult to deposit onto its surface from metal-nanoparticle-based inks. We developed a Cu-based composite ink to deposit conductive Cu films onto cellulose paper via low-temperature sintering in air. The Cu-based inks consisted of a metallo-organic decomposition ink and formic-acid-treated Cu flakes. The composite ink was heated in air at 100°C for only 15 s to give a conductive Cu film (7 × 10−5 Ω cm) on the cellulose paper. Filtration of the Cu-based composite ink accumulated Cu flakes on the paper, which enabled formation of a sintered Cu film with few defects. A strategy was developed to enhance the bending stability of the sintered Cu films on paper substrates using polyvinylpyrrolidone-modified Cu flakes and amine-modified paper. The resistance of the Cu films increased only 1.3-fold and 1.1-fold after 1000 bending cycles at bending radii of 5 mm and 15 mm, respectively. The results of this study provide an approach to increasing the bending stability of Cu films on cellulose paper.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.172417copper inkair-atmosphere sinteringpaper electronicsflexible devices |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shintaro Sakurai Yusuke Akiyama Hideya Kawasaki |
spellingShingle |
Shintaro Sakurai Yusuke Akiyama Hideya Kawasaki Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air Royal Society Open Science copper ink air-atmosphere sintering paper electronics flexible devices |
author_facet |
Shintaro Sakurai Yusuke Akiyama Hideya Kawasaki |
author_sort |
Shintaro Sakurai |
title |
Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air |
title_short |
Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air |
title_full |
Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air |
title_fullStr |
Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air |
title_full_unstemmed |
Filtration-induced production of conductive/robust Cu films on cellulose paper by low-temperature sintering in air |
title_sort |
filtration-induced production of conductive/robust cu films on cellulose paper by low-temperature sintering in air |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2018-01-01 |
description |
Cellulose paper is an attractive substrate for paper electronics because of its advantages of flexibility, biodegradability, easy incorporation into composites, low cost and eco-friendliness. However, the micrometre-sized pores of cellulose paper make robust/conductive films difficult to deposit onto its surface from metal-nanoparticle-based inks. We developed a Cu-based composite ink to deposit conductive Cu films onto cellulose paper via low-temperature sintering in air. The Cu-based inks consisted of a metallo-organic decomposition ink and formic-acid-treated Cu flakes. The composite ink was heated in air at 100°C for only 15 s to give a conductive Cu film (7 × 10−5 Ω cm) on the cellulose paper. Filtration of the Cu-based composite ink accumulated Cu flakes on the paper, which enabled formation of a sintered Cu film with few defects. A strategy was developed to enhance the bending stability of the sintered Cu films on paper substrates using polyvinylpyrrolidone-modified Cu flakes and amine-modified paper. The resistance of the Cu films increased only 1.3-fold and 1.1-fold after 1000 bending cycles at bending radii of 5 mm and 15 mm, respectively. The results of this study provide an approach to increasing the bending stability of Cu films on cellulose paper. |
topic |
copper ink air-atmosphere sintering paper electronics flexible devices |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.172417 |
work_keys_str_mv |
AT shintarosakurai filtrationinducedproductionofconductiverobustcufilmsoncellulosepaperbylowtemperaturesinteringinair AT yusukeakiyama filtrationinducedproductionofconductiverobustcufilmsoncellulosepaperbylowtemperaturesinteringinair AT hideyakawasaki filtrationinducedproductionofconductiverobustcufilmsoncellulosepaperbylowtemperaturesinteringinair |
_version_ |
1724431367252475904 |