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Journal of Nanomaterials
Volume 2018 (2018), Article ID 7401974, 6 pages
https://doi.org/10.1155/2018/7401974
Research Article

Effects of Nanoimprinted Structures on the Performance of Organic Solar Cells

1Department of Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA
2Center for Advanced Materials, University of Massachusetts Lowell, Lowell, MA 01854, USA
3US Army Natick Soldier Research, Development and Engineering Center, Natick, MA 01760, USA

Correspondence should be addressed to Jayant Kumar; ude.lmu@ramuk_tnayaj

Received 9 August 2017; Revised 23 January 2018; Accepted 26 February 2018; Published 11 April 2018

Academic Editor: Chih-Liang Wang

Copyright © 2018 Hardeep Singh Gill et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of nanoimprinted structures on the performance of organic bulk heterojunction solar cells was investigated. The nanostructures were formed over the active layer employing the soft lithographic technique. The measured incident photon-to-current efficiency revealed that the nanostructured morphology over the active layer can efficiently enhance both light harvesting and charge carrier collection due to improvement of the absorption of incident light and the buried nanostructured cathode, respectively. The devices prepared with the imprinted nanostructures exhibited significantly higher power conversion efficiencies as compared to those of the control cells.