Deformation and Failure of Bendable Organic Solar Cells


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This research investigates the effects of bending on the electrical, optical, structural and mechanical properties of flexible organic photovoltaic (OPV) cells. Bulk heterojunction organic solar cells were fabricated on Polyethylene terephthalate (PET) substrates using Poly-3-hexylthiophene: [6, 6]-phenyl-C61-butyric acid methyl ester (P3HT: PCBM) as the active layer and Poly (3, 4-ethylenedioxythiophene) Polystyrenesulfonate (PEDOT: PSS) as the hole injection layer. All the organic layers were deposited by spin coating while the Al cathode was vacuum thermally evaporated. The Indium Tin Oxide (ITO) anode has an average optical transmittance of 85% in the visible spectrum, a sheet resistivity of 60 ohms per square and an average surface roughness of 3nm. The relationship between the optoelectronic performance of the various device layers and the applied mechanical strains has been analyzed. The effects of stress and strain on the current-voltage characteristics of the device and its failure were modeled using the Abaqus software.



Edited by:

Prof. Wole Soboyejo, Dr. Shola Odusunya, Dr. Zebaze Kana, Dr. Nicolas Anuku, Dr. Karen Malatesta and Dr. Mohammed Dauda




J. Asare et al., "Deformation and Failure of Bendable Organic Solar Cells", Advanced Materials Research, Vol. 1132, pp. 116-124, 2016

Online since:

December 2015




* - Corresponding Author

[1] Joseph J. Berry, National Renewable Energy Laboratory (NREL), (May 2011).

[2] Fonash S. J., Solar Cell Device Physics, Second Edition, Elsevier Inc., pp: 1-5, (2010).

[3] Harsanyi G., Polymer films in sensor applications, Technomic Publishing Co., Lancastev, Basel, (1994).

[4] Hong Ma, et al, Interface Engineering for Electronics, Advance Functional Materials, WILEY- VCH Verleg GmbH & Co. KgaA, Weinheim, pp: 1- 15, (2010).

[5] www. technologyrenew. com/ energy/25288.

[6] Brinson, H. F., Brinson L. C., Polymer Engineering Science and Viscoelasticity: An Introduction- Chapter 2: Stress and Strain Analysis and Measurrement, pg 22, (2008) http: /www. springer. com/978-0-387-73860-4.

[7] ME 402 Experimental ME II – Three Point Bending Test, Yeditepe University Engineering Faculty, Mechanical Engineering Laboratory, pp.2-4.

[8] en. wikipedia. org/w/index. p hp?title=Three_point_flexural_test&oldid=452418537, Date retrieved: November, (2011).

[9] Salters Horners, Activity 20 - Bendy Wafer, Advanced Physics for Edexcel AS Physics. Essex, United Kingdom: Pearson Education. (2008).

[10] Odian, George; Principles of Polymerization, 3rd ed., J. Wiley, New York, (1991).

[11] Jang, B. Z.; Advanced Polymer Composites: Principles and Applications, ASM International, Materials Park, OH, (1994).