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Comparisons of the Mechanical Behaviors of Poly (3, 4-ethylenedioxythiophene) (PEDOT) and ITO on Flexible Substrates

Published online by Cambridge University Press:  25 February 2013

Khalid Alzoubi ,
Gihoon Choi ,
Mohammad M. Hamasha ,
Atif S Alkhazali ,
John DeFranco ,
Susan Lu ,
Bahgat Sammakia  and
Charles Westgate
Khalid Alzoubi
Affiliation:
Center for Autonomous Solar Power (CASP), State University of New York at Binghamton, Binghamton, NY 13905
Gihoon Choi
Affiliation:
Center for Autonomous Solar Power (CASP), State University of New York at Binghamton, Binghamton, NY 13905
Mohammad M. Hamasha
Affiliation:
Center for Autonomous Solar Power (CASP), State University of New York at Binghamton, Binghamton, NY 13905
Atif S Alkhazali
Affiliation:
Deaprtment of Systems Science and Industrial Engineering, State University of New York at Binghamton, Binghamton, NY 13905
John DeFranco
Affiliation:
Orthogonal Inc, Ithaca, NY 14850
Susan Lu
Affiliation:
Deaprtment of Systems Science and Industrial Engineering, State University of New York at Binghamton, Binghamton, NY 13905
Bahgat Sammakia
Affiliation:
Deaprtment of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13905
Charles Westgate
Affiliation:
Center for Autonomous Solar Power (CASP), State University of New York at Binghamton, Binghamton, NY 13905
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Abstract

Indium Tin Oxide (ITO) has been widely used as a Transparent Conductive Oxide (TCO) layer in the photovoltaic solar technology because of its excellent electrical and optical properties. However, ITO is brittle, and its conductivity decreases significantly as the ITO films are exposed to stretching or bending strains especially in flexible/foldable solar cell applications. The cracks in ITO appear at very low strains which might cause failure in the conductive layer because of the combination of a very thin film of brittle ceramic material applied to a polymer substrate. Poly (3, 4-ethylenedioxythiophene), abbreviated PEDOT, is of increasing interest as a competitive candidate to ITO. PEDOT has found its way in many applications such as transparent electrode materials and transparent conductive layers in photovoltaic solar cells. In this work, the mechanical behavior of PEDOT was studied under high cycle bending fatigue in which the effects of bending diameter and bending frequency were considered and compared to ITO. High magnification optical images were used to study cracking in the PEDOT as well as the ITO layers. In flexible solar cells, the web will be exposed to folding/bending many times during manufacturing and installation. Therefore, the thin film substrate structure will be exposed to cyclic loading cyclic tensile and compressive strains. Therefore, this work was designed to mechanically fatigue the structure and study its behavior. It was found that bending diameters as well as material (PEDOT or ITO) have a great influence on the electrical conductivity of the thin films.

Keywords

fatiguethin filmpackaging
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1493: Symposium E/H – Photovoltaic Technologies, Devices and Systems Based on Inorganic Materials, Small Organic Molecules and Hybrids , 2013 , pp. 127 - 132
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Hutchinson, J. W. and Suo, Z., Adv. Appl. Mech., 29, 63–191, (1992).CrossRefGoogle Scholar
Leterrier, Y., Progress in Materials Science, 48, 1–55 (2003).CrossRefGoogle Scholar
Leterrier, Y., Me´dico, L., Demarco, F., Ma°nson, F. J. A. E., Bouten, P., DeGoede, J., Nisato, G. and Nairn, J. A., Thin Solid Films, 460, 156–166 (2004).CrossRefGoogle Scholar
van der Sluis, O., Abdallah, A. A., Bouten, P.C.P., Timmermans, P.H.M., den Toonder, J.M.J., de With, G., Engineering Fracture Mechanics, 78, 877–889 (2011).CrossRefGoogle Scholar
Cairns, D. R., and Crawford, G. P., Proceeding of the IEEE, 93, 1451–1458 (2005).CrossRefGoogle Scholar
Crawford, G. P., Flexible Flat Panel Displays, New York, John Wiley & Sons, Ltd., (2005).CrossRefGoogle Scholar
Alzoubi, K., Lu, S., Sammakia, B., Poliks, M., IEEE Transactions on Components, Packaging, and Manufacturing Technology, 1, 43–51 (2011).CrossRefGoogle Scholar
Alzoubi, K., Hamasha, M. M., Lu, S., Sammakia, B., IEEE Journal of Display Technology, 7, 593–600, (2011)CrossRefGoogle Scholar
Alzoubi, K., Lu, S., Sammakia, B., Poliks, M., “Experimental Study of the High Cyclic Bending Fatigue of Thin Film Metal on Polyethylene Terephthalate for Flexible Electronics Applications, ” Proceedings of the ASME 2009 InterPACK Conference IPACK2009, July 19-23, 2009, San Francisco, California.Google Scholar
Alzoubi, K., Lu, S., Sammakia, B., Poliks, M., “Factors Effect Study for the High Cyclic Bending Fatigue of Thin Films on PET Substrate Using Design of Experiments Tools, ” 9th Annual Flexible Electronics and Displays Conference, February 1-4, 2010, Phoenix, Arizona.Google Scholar
Mayyas, A., Qasaimeh, A., Alzoubi, K., Lu, S., “Machinability Modeling for Aluminum Composite Drilling Process, ” Proceedings of the 2009 Industrial Engineering Research Conference, May 30- June 3, 2009, Miami, Florida.Google Scholar
Alzoubi, K., Qasaimeh, A., Lu, S., Sammakia, B., Poliks, M., “Resistance Change Modeling of Sputtered Thin Films on Flexible Substrates under Fatigue Test, ” 2010 Industrial Engineering Research Conference, June 5- June 9, 2010, Cancún, Mexico.Google Scholar
Montgomery, D., Design and Analysis of Experiments, 5th edition, Hoboken, NJ, John Wiley and Sons, Inc., (2000).Google Scholar
Dasgupta, A., Pecht, M. G., Mathieu, B., Finite Elements in Analysis and Design, 30, 125–146, (1998).CrossRefGoogle Scholar
Liu, S. L., Chen, G., Yong, M. S., Thin Solid Films, 462–463, 454– 458, (2004).CrossRefGoogle Scholar