Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes

Liu, Yingchi; Tippets, Cary A.; Kirsch, Christoph; Mitran, Sorin; Samulski, Edward T.; Lopez, Rene

doi:10.1063/1.4812235

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes
Authors:	Liu, Yingchi Tippets, Cary A. Kirsch, Christoph Mitran, Sorin Samulski, Edward T. Lopez, Rene
DOI:	10.1063/1.4812235
Published in:	Journal of Applied Physics
Volume(Issue):	113
Issue:	24
Issue Date:	2013
Publisher / Ed. Institution:	American Institute of Physics
ISSN:	0021-8979 1089-7550
Language:	English
Subject (DDC):
Abstract:	Light trapping strategies are frequently suggested to improve organic photovoltaic (OPV) cell efficiencies. However, one cannot overlook the side-effects to charge carrier collection which are introduced when seeking optical enhancements. A comprehensive electro-photonic model is utilized to study the optical and electrical effects of patterning poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] and poly(3-hexylthiophene) based solar cells with simple optical grating structures. It is found that for the most part, optical absorption improvements are attenuated by enhanced electrical losses. Optimized device structures that overcome this tradeoff are proposed and their detailed electro-optical characteristics are discussed. When the hole mobility is smaller than the electron mobility, the results suggest that in general, an inverted structure has a better chance to outperform a flat active layer than a conventional architecture in an OPV cell with the ridge-patterned back electrode.
URI:	https://digitalcollection.zhaw.ch/handle/11475/12352
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Liu, Y., Tippets, C. A., Kirsch, C., Mitran, S., Samulski, E. T., & Lopez, R. (2013). Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes. Journal of Applied Physics, 113(24). https://doi.org/10.1063/1.4812235

Liu, Y. et al. (2013) ‘Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes’, Journal of Applied Physics, 113(24). Available at: https://doi.org/10.1063/1.4812235.

Y. Liu, C. A. Tippets, C. Kirsch, S. Mitran, E. T. Samulski, and R. Lopez, “Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes,” Journal of Applied Physics, vol. 113, no. 24, 2013, doi: 10.1063/1.4812235.

LIU, Yingchi, Cary A. TIPPETS, Christoph KIRSCH, Sorin MITRAN, Edward T. SAMULSKI und Rene LOPEZ, 2013. Balance between light trapping and charge carrier collection : electro-photonic optimization of organic photovoltaics with ridge-patterned back electrodes. Journal of Applied Physics. 2013. Bd. 113, Nr. 24. DOI 10.1063/1.4812235

Liu, Yingchi, Cary A. Tippets, Christoph Kirsch, Sorin Mitran, Edward T. Samulski, and Rene Lopez. 2013. “Balance between Light Trapping and Charge Carrier Collection : Electro-Photonic Optimization of Organic Photovoltaics with Ridge-Patterned Back Electrodes.” Journal of Applied Physics 113 (24). https://doi.org/10.1063/1.4812235.

Liu, Yingchi, et al. “Balance between Light Trapping and Charge Carrier Collection : Electro-Photonic Optimization of Organic Photovoltaics with Ridge-Patterned Back Electrodes.” Journal of Applied Physics, vol. 113, no. 24, 2013, https://doi.org/10.1063/1.4812235.