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Flexographic printing of ultra-thin semiconductor polymer layers

Benjamin Thomas Mogg, Davide Deganello Orcid Logo, Timothy Claypole, Christopher Phillips Orcid Logo

Translational Materials Research, Volume: 3, Issue: 1, Start page: 015001

Swansea University Authors: Davide Deganello Orcid Logo, Timothy Claypole, Christopher Phillips Orcid Logo

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DOI (Published version): 10.1088/2053-1613/3/1/015001

Abstract

Methods of fabricating and controlling organic light emitting diode (OLED) or photovoltaic layers effectively are paramount for achieving a functional and durable device. The deposited film needs to be uniform and homogeneous to avoid non-uniform luminescence in the OLED. Although methods of deposit...

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Published in: Translational Materials Research
ISSN: 2053-1613
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa26114
first_indexed 2016-05-20T01:13:53Z
last_indexed 2020-05-27T12:36:16Z
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spelling 2020-05-27T11:28:54.2570823 v2 26114 2016-02-10 Flexographic printing of ultra-thin semiconductor polymer layers ea38a0040bdfd3875506189e3629b32a 0000-0001-8341-4177 Davide Deganello Davide Deganello true false 7735385522f1e68a8775b4f709e91d55 Timothy Claypole Timothy Claypole true false cc734f776f10b3fb9b43816c9f617bb5 0000-0001-8011-710X Christopher Phillips Christopher Phillips true false 2016-02-10 ACEM Methods of fabricating and controlling organic light emitting diode (OLED) or photovoltaic layers effectively are paramount for achieving a functional and durable device. The deposited film needs to be uniform and homogeneous to avoid non-uniform luminescence in the OLED. Although methods of depositing the ultra-thin sub 100 nm layers within OLED are effective, they are relatively slow and expensive. This paper therefore demonstrates flexography as an alternative method for depositing the semiconductor layer for OLED onto glass substrate. In this case a proprietary semiconducting polyflourine dispersed in xylene was used. This material functions as the hole injecting layer. The low polymer concentration and requirement for aromatic solvent presented challenges for the process; conventional photopolymer printing plates degraded rapidly on contact with xylene and rubber printing plates were found to be sufficiently resilient. Through optimisation of printing parameters and surface modification of both the printing plate and substrate with UV/ozone exposure, a consistent sub-100 nm film was achieved. Flexographic printing will enable a substantial reduction in layer fabrication time, as well as allowing roll to roll mass production at lower cost. The research indicated within this paper will aid the progression of flexography as a viable cost effective method for OLED or display technology application through continuous printing of ultra-thin layers. Journal Article Translational Materials Research 3 1 015001 2053-1613 11 2 2016 2016-02-11 10.1088/2053-1613/3/1/015001 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University RCUK 2020-05-27T11:28:54.2570823 2016-02-10T12:41:53.4740449 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Benjamin Thomas Mogg 1 Davide Deganello 0000-0001-8341-4177 2 Timothy Claypole 3 Christopher Phillips 0000-0001-8011-710X 4 0026114-10022016144808.pdf Flexographic_Printing_of_Ultrathin_Semiconductor_Polymer_Layers_accepted_IOP_TMR.pdf 2016-02-10T14:48:08.1500000 Output 1170882 application/pdf Accepted Manuscript true 2017-02-11T00:00:00.0000000 false
title Flexographic printing of ultra-thin semiconductor polymer layers
spellingShingle Flexographic printing of ultra-thin semiconductor polymer layers
Davide Deganello
Timothy Claypole
Christopher Phillips
title_short Flexographic printing of ultra-thin semiconductor polymer layers
title_full Flexographic printing of ultra-thin semiconductor polymer layers
title_fullStr Flexographic printing of ultra-thin semiconductor polymer layers
title_full_unstemmed Flexographic printing of ultra-thin semiconductor polymer layers
title_sort Flexographic printing of ultra-thin semiconductor polymer layers
author_id_str_mv ea38a0040bdfd3875506189e3629b32a
7735385522f1e68a8775b4f709e91d55
cc734f776f10b3fb9b43816c9f617bb5
author_id_fullname_str_mv ea38a0040bdfd3875506189e3629b32a_***_Davide Deganello
7735385522f1e68a8775b4f709e91d55_***_Timothy Claypole
cc734f776f10b3fb9b43816c9f617bb5_***_Christopher Phillips
author Davide Deganello
Timothy Claypole
Christopher Phillips
author2 Benjamin Thomas Mogg
Davide Deganello
Timothy Claypole
Christopher Phillips
format Journal article
container_title Translational Materials Research
container_volume 3
container_issue 1
container_start_page 015001
publishDate 2016
institution Swansea University
issn 2053-1613
doi_str_mv 10.1088/2053-1613/3/1/015001
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
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description Methods of fabricating and controlling organic light emitting diode (OLED) or photovoltaic layers effectively are paramount for achieving a functional and durable device. The deposited film needs to be uniform and homogeneous to avoid non-uniform luminescence in the OLED. Although methods of depositing the ultra-thin sub 100 nm layers within OLED are effective, they are relatively slow and expensive. This paper therefore demonstrates flexography as an alternative method for depositing the semiconductor layer for OLED onto glass substrate. In this case a proprietary semiconducting polyflourine dispersed in xylene was used. This material functions as the hole injecting layer. The low polymer concentration and requirement for aromatic solvent presented challenges for the process; conventional photopolymer printing plates degraded rapidly on contact with xylene and rubber printing plates were found to be sufficiently resilient. Through optimisation of printing parameters and surface modification of both the printing plate and substrate with UV/ozone exposure, a consistent sub-100 nm film was achieved. Flexographic printing will enable a substantial reduction in layer fabrication time, as well as allowing roll to roll mass production at lower cost. The research indicated within this paper will aid the progression of flexography as a viable cost effective method for OLED or display technology application through continuous printing of ultra-thin layers.
published_date 2016-02-11T06:44:50Z
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