Title: Effects of nano-patterned versus simple flat active layers in upright organic photovoltaic devices
Authors : Liu, Yingchi
Kirsch, Christoph
Gadisa, Abay
Aryal, Mukti
Mitran, Sorin
Samulski, Edward T.
Lopez, Rene
Published in : Journal of physics : D, applied physics
Volume(Issue) : 46
Issue : 2
Publisher / Ed. Institution : Institute of Physics Publishing
Issue Date: 2013
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 621.3: Electrical engineering and electronics
Abstract: A scalable procedure for nano-patterning the bulk heterojunction layer in organic photovoltaic (OPV) devices is reported. Nano-patterning is shown to increase light absorption in poly(3-hexylthiophene) : [6,6]-phenyl-C61-butyric acid methyl ester (P3HT : PCBM) devices (ITO\WO3\P3HT : PCBM\Ca\Al). Nano-patterning also modifies electric fields in OPV devices, thus affecting charge harvesting. Nano-patterned OPV devices with a power conversion efficiency of 4% are presented. Comparable efficiencies are also obtained by optimization of thicknesses in a flat-layer device. Trade-offs between absorption enhancement and charge harvesting deterioration induced by nano-patterning are discussed as well as possible optimization strategies.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific Journal
DOI : 10.1088/0022-3727/46/2/024008
ISSN: 0022-3727
1361-6463
URI: https://digitalcollection.zhaw.ch/handle/11475/12338
Appears in Collections:Publikationen School of Engineering

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