Nanoparticle sintering methods and applications for printed electronics: Dissertation

Mark Lee Allen

Research output: ThesisDissertationCollection of Articles

Abstract

Printed electronics refers to the technologies of fabricating electronic and optoelectronic devices by traditional printing methods. Especially roll-to-roll mass-printing is foreseen to enable low-cost devices on flexible substrates. Direct-write patterning methods, such as inkjet printing, inspire potential for cost-savings in R&D prototyping and customization. Various organic and inorganic materials can be printed in liquid form and subsequently cured to obtain desired electric functionalities. For example, metals can be printed as nanoparticle dispersions and sintered to obtain high conductivity. In this Thesis, the applicability of silver nanoparticle inks for printed wiring, interconnections, memories, antennas, and wireless resonant tags, is investigated. The Thesis work involves modeling, simulating, fabricating, measuring and analyzing the prototype structures. Novel methods for sintering nanoparticles are developed. The rapid electrical sintering method, performed by applying voltage over the printed structure, is shown to provide a conductivity increase of more than four orders of magnitude in just milliseconds with the resulting conductivity reaching above 50 % that of bulk silver. The method is further developed to allow for a more practical adaption via contactless coupling at microwave frequencies. A room-temperature sintering method based on the chemical removal of the nanoparticle stabilizing ligand through interaction between the ink and the coating layer of the printing substrate is also presented. The substrate-facilitated sintering method is shown to enable in situ component attachment to printed structures. Inkjet printed RFID antennas and a wireless RF resonant tag fabricated by a combination of roll-to-roll gravure and inkjet printing are shown to provide reading distances sufficient for many practical applications. A novel approach for contactless read-out of printed memory is introduced and demonstrated for a memory structure inkjet printed using silver nanoparticle ink. The information content of the memory is stored in memory bits selectively programmed using the rapid electrical sintering method.
Original languageEnglish
QualificationDoctor Degree
Awarding Institution
  • Aalto University
Supervisors/Advisors
  • Nikoskinen, Keijo, Supervisor, External person
  • Seppä, Heikki, Supervisor
Award date19 Oct 2011
Place of PublicationEspoo
Publisher
Print ISBNs978-952-60-4277-0
Electronic ISBNs978-952-60-4278-7
Publication statusPublished - 2011
MoE publication typeG5 Doctoral dissertation (article)

Fingerprint

Printing
Electronic equipment
Sintering
Nanoparticles
Data storage equipment
Ink
Silver
Substrates
Antennas
Microwave frequencies
Electric wiring
Dispersions
Radio frequency identification (RFID)
Optoelectronic devices
Costs
Ligands
Coatings
Liquids
Electric potential
Metals

Keywords

  • Printed electronics
  • rapid electrical sintering
  • substrate-facilitated sintering
  • nanoparticle ink
  • inkjet printing
  • gravure printing
  • radio frequency identification
  • printed memory
  • interconnection
  • contactless read-out

Cite this

Allen, Mark Lee. / Nanoparticle sintering methods and applications for printed electronics : Dissertation. Espoo : Aalto University, 2011. 93 p.
@phdthesis{522a4dedb09e45eea9dad7c49d808efd,
title = "Nanoparticle sintering methods and applications for printed electronics: Dissertation",
abstract = "Printed electronics refers to the technologies of fabricating electronic and optoelectronic devices by traditional printing methods. Especially roll-to-roll mass-printing is foreseen to enable low-cost devices on flexible substrates. Direct-write patterning methods, such as inkjet printing, inspire potential for cost-savings in R&D prototyping and customization. Various organic and inorganic materials can be printed in liquid form and subsequently cured to obtain desired electric functionalities. For example, metals can be printed as nanoparticle dispersions and sintered to obtain high conductivity. In this Thesis, the applicability of silver nanoparticle inks for printed wiring, interconnections, memories, antennas, and wireless resonant tags, is investigated. The Thesis work involves modeling, simulating, fabricating, measuring and analyzing the prototype structures. Novel methods for sintering nanoparticles are developed. The rapid electrical sintering method, performed by applying voltage over the printed structure, is shown to provide a conductivity increase of more than four orders of magnitude in just milliseconds with the resulting conductivity reaching above 50 {\%} that of bulk silver. The method is further developed to allow for a more practical adaption via contactless coupling at microwave frequencies. A room-temperature sintering method based on the chemical removal of the nanoparticle stabilizing ligand through interaction between the ink and the coating layer of the printing substrate is also presented. The substrate-facilitated sintering method is shown to enable in situ component attachment to printed structures. Inkjet printed RFID antennas and a wireless RF resonant tag fabricated by a combination of roll-to-roll gravure and inkjet printing are shown to provide reading distances sufficient for many practical applications. A novel approach for contactless read-out of printed memory is introduced and demonstrated for a memory structure inkjet printed using silver nanoparticle ink. The information content of the memory is stored in memory bits selectively programmed using the rapid electrical sintering method.",
keywords = "Printed electronics, rapid electrical sintering, substrate-facilitated sintering, nanoparticle ink, inkjet printing, gravure printing, radio frequency identification, printed memory, interconnection, contactless read-out",
author = "Allen, {Mark Lee}",
note = "TK611 Aalto University School of Electrical Engineering. Department of Radio Science and Engineering SDA: MEL",
year = "2011",
language = "English",
isbn = "978-952-60-4277-0",
series = "Aalto University Publication Series: Doctoral Dissertations",
publisher = "Aalto University",
number = "81",
address = "Finland",
school = "Aalto University",

}

Allen, ML 2011, 'Nanoparticle sintering methods and applications for printed electronics: Dissertation', Doctor Degree, Aalto University, Espoo.

Nanoparticle sintering methods and applications for printed electronics : Dissertation. / Allen, Mark Lee.

Espoo : Aalto University, 2011. 93 p.

Research output: ThesisDissertationCollection of Articles

TY - THES

T1 - Nanoparticle sintering methods and applications for printed electronics

T2 - Dissertation

AU - Allen, Mark Lee

N1 - TK611 Aalto University School of Electrical Engineering. Department of Radio Science and Engineering SDA: MEL

PY - 2011

Y1 - 2011

N2 - Printed electronics refers to the technologies of fabricating electronic and optoelectronic devices by traditional printing methods. Especially roll-to-roll mass-printing is foreseen to enable low-cost devices on flexible substrates. Direct-write patterning methods, such as inkjet printing, inspire potential for cost-savings in R&D prototyping and customization. Various organic and inorganic materials can be printed in liquid form and subsequently cured to obtain desired electric functionalities. For example, metals can be printed as nanoparticle dispersions and sintered to obtain high conductivity. In this Thesis, the applicability of silver nanoparticle inks for printed wiring, interconnections, memories, antennas, and wireless resonant tags, is investigated. The Thesis work involves modeling, simulating, fabricating, measuring and analyzing the prototype structures. Novel methods for sintering nanoparticles are developed. The rapid electrical sintering method, performed by applying voltage over the printed structure, is shown to provide a conductivity increase of more than four orders of magnitude in just milliseconds with the resulting conductivity reaching above 50 % that of bulk silver. The method is further developed to allow for a more practical adaption via contactless coupling at microwave frequencies. A room-temperature sintering method based on the chemical removal of the nanoparticle stabilizing ligand through interaction between the ink and the coating layer of the printing substrate is also presented. The substrate-facilitated sintering method is shown to enable in situ component attachment to printed structures. Inkjet printed RFID antennas and a wireless RF resonant tag fabricated by a combination of roll-to-roll gravure and inkjet printing are shown to provide reading distances sufficient for many practical applications. A novel approach for contactless read-out of printed memory is introduced and demonstrated for a memory structure inkjet printed using silver nanoparticle ink. The information content of the memory is stored in memory bits selectively programmed using the rapid electrical sintering method.

AB - Printed electronics refers to the technologies of fabricating electronic and optoelectronic devices by traditional printing methods. Especially roll-to-roll mass-printing is foreseen to enable low-cost devices on flexible substrates. Direct-write patterning methods, such as inkjet printing, inspire potential for cost-savings in R&D prototyping and customization. Various organic and inorganic materials can be printed in liquid form and subsequently cured to obtain desired electric functionalities. For example, metals can be printed as nanoparticle dispersions and sintered to obtain high conductivity. In this Thesis, the applicability of silver nanoparticle inks for printed wiring, interconnections, memories, antennas, and wireless resonant tags, is investigated. The Thesis work involves modeling, simulating, fabricating, measuring and analyzing the prototype structures. Novel methods for sintering nanoparticles are developed. The rapid electrical sintering method, performed by applying voltage over the printed structure, is shown to provide a conductivity increase of more than four orders of magnitude in just milliseconds with the resulting conductivity reaching above 50 % that of bulk silver. The method is further developed to allow for a more practical adaption via contactless coupling at microwave frequencies. A room-temperature sintering method based on the chemical removal of the nanoparticle stabilizing ligand through interaction between the ink and the coating layer of the printing substrate is also presented. The substrate-facilitated sintering method is shown to enable in situ component attachment to printed structures. Inkjet printed RFID antennas and a wireless RF resonant tag fabricated by a combination of roll-to-roll gravure and inkjet printing are shown to provide reading distances sufficient for many practical applications. A novel approach for contactless read-out of printed memory is introduced and demonstrated for a memory structure inkjet printed using silver nanoparticle ink. The information content of the memory is stored in memory bits selectively programmed using the rapid electrical sintering method.

KW - Printed electronics

KW - rapid electrical sintering

KW - substrate-facilitated sintering

KW - nanoparticle ink

KW - inkjet printing

KW - gravure printing

KW - radio frequency identification

KW - printed memory

KW - interconnection

KW - contactless read-out

M3 - Dissertation

SN - 978-952-60-4277-0

T3 - Aalto University Publication Series: Doctoral Dissertations

PB - Aalto University

CY - Espoo

ER -