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Understanding mechanical behavior and reliability of organic electronic materials

Published online by Cambridge University Press:  02 February 2017

Jae-Han Kim ,
Inhwa Lee ,
Taek-Soo Kim ,
Nicholas Rolston ,
Brian L. Watson  and
Reinhold H. Dauskardt
Jae-Han Kim
Affiliation:
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, South Korea; jaehan.kim@kaist.ac.kr
Inhwa Lee
Affiliation:
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, South Korea; inhwa@kaist.ac.kr
Taek-Soo Kim
Affiliation:
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, South Korea; tskim1@kaist.ac.kr
Nicholas Rolston
Affiliation:
Department of Applied Physics, Stanford University, USA; rolston@stanford.edu
Brian L. Watson
Affiliation:
Department of Materials Science and Engineering, Stanford University, USA; brian.watson@stanford.edu
Reinhold H. Dauskardt
Affiliation:
Department of Materials Science and Engineering, Stanford University, USA; dauskardt@stanford.edu
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Abstract

The mechanical properties of organic electronic materials and interfaces play a central role in determining the manufacturability and reliability of flexible and stretchable organic electronic devices. The synergistic effects of mechanical stress and deformation, together with other operating parameters such as temperature and temperature cycling, and exposure to solar radiation, moisture, and other environmental species are particularly important for longer-term device stability. We review recent studies of basic mechanical properties such as adhesion and cohesion, stiffness, yield behavior, and ductility of organic semiconducting materials, and their connection to underlying molecular structure. We highlight thin-film metrologies to probe the mechanical behavior, including when subjected to simulated operational conditions. We also report on strategies for improving reliability through interface engineering and tailoring material chemistry and molecular structure. These studies provide insights into how these metrologies and metrics inform the development of materials and devices for improved reliability.

Keywords

electronic materialfractureorganicstress/strain relationshipmacromolecular structure

Information

Type
Research Article
Information
MRS Bulletin , Volume 42 , Issue 2: Stretchable and Ultraflexible Organic Electronics , February 2017 , pp. 115 - 123
Copyright
Copyright © Materials Research Society 2017 

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