Effects of Deformation on Failure Mechanisms and Optical Properties of Flexible Organic Solar Cell Structures

2015 ◽  
Vol 1132 ◽  
pp. 125-143 ◽  
Author(s):  
J. Asare ◽  
B. Agyei-Tuffour ◽  
O.K. Oyewole ◽  
V.C. Anye ◽  
D.Y. Momodu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Driving Forces ◽  
Acid Methyl Ester ◽  
Deformation And Failure ◽  
Cell Structures ◽  
Cracking Mechanisms ◽  
The Individual ◽  
Flexible Organic Solar Cells

This paper examines the effects of cyclic bending on the deformation and failure of layers that are relevant to flexible organic solar cells (with Polyethylene Terephthalate (PET) substrates and Poly-3-hexylthiophene: [6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) active layers). The deformation and cracking mechanisms are elucidated along with the stresses and crack driving forces associated with the bending of flexible organic solar cells. The changes in the optical properties (transmittance) of the individual layers and multilayers are then explored for layers/multilayers deformed to flexural strains and stresses that are computed using finite element models. The implications of the results are then discussed for the design of flexible organic solar cells.

Deformation and Failure of Bendable Organic Solar Cells

2015 ◽  
Vol 1132 ◽  
pp. 116-124 ◽  
Author(s):  
Joseph Asare ◽  
B. Agyei-Tuffour ◽  
O.K. Oyewole ◽  
G.M. Zebaze-Kana ◽  
W.O. Soboyejo
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Visible Spectrum ◽  
Optical Transmittance ◽  
Hole Injection ◽  
Deformation And Failure ◽  
Organic Layers

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.

Failure Mechanisms in Layers Relevant to Stretchable Organic Solar Cells

2015 ◽  
Vol 1132 ◽  
pp. 106-115
Author(s):  
O.K. Oyewole ◽  
D.O. Oyewole ◽  
J. Asare ◽  
B. Agyei-Tuffor ◽  
M.G. Zebaze Kana ◽  
...  
Keyword(s):  
Experimental Study ◽  
Optical Properties ◽  
Solar Cells ◽  
Elastic Properties ◽  
Organic Solar Cells ◽  
Driving Forces ◽  
Failure Mechanisms ◽  
Interfacial Crack ◽  
Stress Distributions ◽  
Improved Design

In this paper, we present the results of a combined theoretical, computational and experimental study of failure mechanisms in model multilayers that are relevant to stretchable organic solar cells. The deformation of these structures is elucidated under monotonic loading that simulates possible stretching phenomena. The stress distributions within the layers and the possible interfacial crack driving forces are computed for model layered structures with well controlled thicknesses and elastic properties. The implications of the results are discussed for the improved design of stretchable organic solar cells with reliable optical properties.

scholarly journals A comparative approach to enhance the electrical performance of PEDOT:PSS as transparent electrode for organic solar cells

2019 ◽  
Vol 28 (1) ◽  
pp. 66-73
Author(s):  
Ismail Borazan ◽  
Ayşe Celik Bedeloğlu ◽  
Ali Demir
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Isopropyl Alcohol ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Transparent Electrode ◽  
Electrical Performance ◽  
Comparative Approach ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

In this article, the improvement in electrical performance of poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) as the transparent electrode doped with different additives (ethylene glycol (EG), isopropyl alcohol) or treatment of sulfuric acid was enhanced that organic solar cells (OSCs) were produced by using poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61 butyric acid methyl ester. OSCs were fabricated by the doped or treated PEDOT:PSS films as transparent electrodes. The photoelectrical measurements were carried out and the effects of doping or treatment were compared. As a result, EG-added PEDOT:PSS electrode showed the best power conversion efficiency value of 1.87% among the PEDOT:PSS anodes.

Continuous 1D-Metallic Microfibers Web for Flexible Organic Solar Cells

2015 ◽  
Vol 7 (49) ◽  
pp. 27397-27404 ◽  
Author(s):  
Kihyon Hong ◽  
Juyoung Ham ◽  
Byoung-Joon Kim ◽  
Jae Yong Park ◽  
Dong Chan Lim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Flexible Organic Solar Cells

scholarly journals Benzodithiophene-based poly(aryleneethynylene)s: Synthesis, optical properties, and applications in organic solar cells

2013 ◽  
Vol 52 (2) ◽  
pp. 208-215 ◽  
Author(s):  
Shuguang Wen ◽  
Xichang Bao ◽  
Wenfei Shen ◽  
Chuantao Gu ◽  
Zhengkun Du ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Organic Solar Cells

Metallic nanomesh electrodes with controllable optical properties for organic solar cells

2012 ◽  
Vol 100 (14) ◽  
pp. 143109 ◽  
Author(s):  
Jinfeng Zhu ◽  
Xiaodan Zhu ◽  
Ryan Hoekstra ◽  
Lu Li ◽  
Faxian Xiu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Organic Solar Cells
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