University of Oulu

Kari Remes, Kimmo Leppänen, and Tapio Fabritius, "Thermography based online characterization of conductive thin films in large-scale electronics fabrication," Opt. Express 26, 1219-1229 (2018)

Thermography based online characterization of conductive thin films in large-scale electronics fabrication

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Author: Remes, Kari1; Leppänen, Kimmo1,2; Fabritius, Tapio1
Organizations: 1Optoelectronics and Measurement Techniques, Faculty of Information Technology and Electrical Engineering, University of Oulu
2Mettler-Toledo GmbH, SBU AutoChem
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 7.2 MB)
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Language: English
Published: Optical Society of America, 2018
Publish Date: 2018-03-08


Flexible electronics is an emerging thin film based technology enabling completely new types of products and applications compared to conventional electronics. Since the quality of films defines the functionality of fabricated devices, the lack of suitable online manufacturing quality assessment tools has been identified to be a critical bottleneck while upscaling the volume and the yield of thin film electronics manufacturing. In order to solve that problem, a synchronized thermography (ST) based online measurement system was built. Applicability of proposed roll-to-roll compatible ST based system was demonstrated by characterizing a moving plastic film with conductive indium tin oxide on top. Obtained results show that ST can be utilized for online homogeneity characterization and sheet resistance estimation of large area thin films which are not possible with other existing methods.

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Series: Optics express
ISSN: 1094-4087
ISSN-E: 1094-4087
ISSN-L: 1094-4087
Volume: 26
Issue: 2
Pages: 1219 - 1229
DOI: 10.1364/OE.26.001219
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: Partly funded by the European Metrology Programme for Innovation and Research (EMPIR) initiative Grant Agreement (14IND09).
Copyright information: © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.