Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Assisted sintering of silver nanoparticle inkjet inks on paper with active coatings
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0003-2340-2363
Schoeller Technocell GmbH & Co KG, D-49086 Osnabruck, Germany.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
Show others and affiliations
2015 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 5, p. 64841-64849Article in journal (Refereed) Published
Abstract [en]

Inkjet-printed metal films are important within the emerging field of printed electronics. For large-scale manufacturing, low-cost flexible substrates and low temperature sintering is desired. Tailored coated substrates are interesting for roll-to-roll fabrication of printed electronics, since a suitable tailoring of the ink-substrate system may reduce, or remove, the need for explicit sintering. Here we utilize specially designed coated papers, containing chloride as an active sintering agent. The built-in sintering agent greatly assists low-temperature sintering of inkjet-printed AgNP films. Further, we examine the effect of variations in coating pore size and precoating type. Interestingly, we find that the sintering is substantially affected by these parameters.

Place, publisher, year, edition, pages
2015. Vol. 5, p. 64841-64849
Keyword [en]
printed electronics, sintering, inkjet printing, silver nanoparticles, AgNP, thin films, paper, coatings, chemical sintering, mesoporous, flexible electronics
National Category
Materials Engineering Nano Technology Materials Chemistry Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-23418DOI: 10.1039/c5ra06626cISI: 000359136500003Scopus ID: 2-s2.0-84938717754Local ID: STCOAI: oai:DiVA.org:miun-23418DiVA, id: diva2:763166
Available from: 2014-11-13 Created: 2014-11-13 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Metal Films for Printed Electronics: Ink-substrate Interactions and Sintering
Open this publication in new window or tab >>Metal Films for Printed Electronics: Ink-substrate Interactions and Sintering
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A new manufacturing paradigm may lower the cost and environmental impact of existing products, as well as enable completely new products. Large scale, roll-to-roll manufacturing of flexible electronics and other functionality has great potential. However, a commercial breakthrough depends on a lower consumption of materials and energy compared with competing alternatives, and that sufficiently high performance and reliability of the products can be maintained. The substrate constitutes a large part of the product, and therefore its cost and environmental sustainability are important. Electrically conducting thin films are required in many functional devices and applications. In demanding applications, metal films offer the highest conductivity.

 

In this thesis, paper substrates of various type and construction were characterized, and the characteristics were related to the performance of inkjet-printed metal patterns. Fast absorption of the ink carrier was beneficial for well-defined pattern geometry, as well as high conductivity. Surface roughness with topography variations of sufficiently large amplitude and frequency, was detrimental to the pattern definition and conductivity. Porosity was another important factor, where the characteristic pore size was much more important than the total pore volume. Apparent surface energy was important for non-absorbing substrates, but of limited importance for coatings with a high absorption rate. Applying thin polymer–based coatings on flexible non-porous films to provide a mechanism for ink solvent removal, improved the pattern definition significantly. Inkjet-printing of a ZnO-dispersion on uncoated paper provided a thin spot-coating, allowing conductivity of silver nanoparticle films. Conductive nanoparticle films could not form directly on the uncoated paper.

 

The resulting performance of printed metal patterns was highly dependent on a well adapted sintering methodology. Several sintering methods were examined in this thesis, including conventional oven sintering, electrical sintering, microwave sintering, chemical sintering and intense pulsed light sintering. Specially designed coated papers with modified chemical and physical properties, were utilized for chemical low-temperature sintering of silver nanoparticle inks. For intense pulsed light sintering and material conversion of patterns, custom equipment was designed and built. Using the equipment, inkjet-printed copper oxide patterns were processed into highly conducting copper patterns. Custom-designed papers with mesoporous coatings and porous precoatings improved the reliablility and performance of the reduction and sintering process.

 

 

 

 

The thesis aims to clarify how ink-substrate interactions and sintering methodology affect the performance and reliability of inkjet-printed nanoparticle patterns on flexible substrates. This improves the selection, adaptation, design and manufacturing of suitable substrates for inkjet-printed high conductivity patterns, such as circuit boards or RFID antennas.  

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2014. p. 72
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 210
Keyword
inkjet printing, silver nanoparticles, paper, flexible substrates, sintering, printed electronics, IPL sintering, flash sintering, copper films, coatings, thin films, AgNP, conductive films, metal films
National Category
Physical Chemistry Materials Engineering Nano Technology Physical Sciences
Identifiers
urn:nbn:se:miun:diva-23420 (URN)978-91-87557-98-9 (ISBN)
Public defence
2014-12-18, Mediacenter, Digital Printing Center, Järnvägsgatan 3, Örnsköldsvik, 10:00 (English)
Opponent
Supervisors
Available from: 2014-11-14 Created: 2014-11-13 Last updated: 2015-03-13Bibliographically approved

Open Access in DiVA

fulltext(2977 kB)357 downloads
File information
File name FULLTEXT01.pdfFile size 2977 kBChecksum SHA-512
96f2bca892022622dbac022c63f360587c59a8e804fa4244d3dfc2e1994116a725a5eea84ff558a637f9db786c7b88eec9b0de9a2cc263a797dd6d872705eea5
Type fulltextMimetype application/pdf
attachment(1347 kB)35 downloads
File information
File name ATTACHMENT01.pdfFile size 1347 kBChecksum SHA-512
832832aa3bc2e07477a62cb039f6246bc18ba57b37f0912a49ff2bb96e61e9b2ddaa8057b878370b0183fca65a5c6671970866351d69ced8f86477cd86a67c92
Type attachmentMimetype application/pdf

Other links

Publisher's full textScopushttp://pubs.rsc.org/en/content/articlelanding/2015/ra/c5ra06626c#!divAbstract

Search in DiVA

By author/editor
Öhlund, ThomasAndres, BrittaAndersson, HenrikForsberg, SvenNilsson, Hans-ErikAndersson, MattiasZhang, RenyunOlin, Håkan
By organisation
Department of Natural SciencesDepartment of Electronics Design
In the same journal
RSC Advances
Materials EngineeringNano TechnologyMaterials ChemistryPaper, Pulp and Fiber Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 357 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 953 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.34-SNAPSHOT
|