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Lee DH, Michael Yang Y, You J, et al. Immiscible solvents enabled nanostructure formation for efficient polymer photovoltaic cells. Nanotechnology. 2014;25(29):295401doi: 10.1088/0957-4484/25/29/295401.
Lee, D. H., Michael Yang, Y., You, J., Richard, E., & Li, G. (2014). Immiscible solvents enabled nanostructure formation for efficient polymer photovoltaic cells. Nanotechnology, 25(29), 295401. https://doi.org/10.1088/0957-4484/25/29/295401
Lee, Dong-Hyun, et al. "Immiscible solvents enabled nanostructure formation for efficient polymer photovoltaic cells." Nanotechnology vol. 25,29 (2014): 295401. doi: https://doi.org/10.1088/0957-4484/25/29/295401
Lee DH, Michael Yang Y, You J, Richard E, Li G. Immiscible solvents enabled nanostructure formation for efficient polymer photovoltaic cells. Nanotechnology. 2014 Jul 25;25(29):295401. doi: 10.1088/0957-4484/25/29/295401. Epub 2014 Jul 01. PMID: 24981571.
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Nanotechnology. 2014 Jul 25;25(29):295401. doi: 10.1088/0957-4484/25/29/295401. Epub 2014 Jul 01.

Immiscible solvents enabled nanostructure formation for efficient polymer photovoltaic cells.

Nanotechnology

Dong-Hyun Lee, Yang Michael Yang, Jingbi You, Eric Richard, Gang Li

Affiliations

  1. Department of Material Science and Engineering, University of California Los Angeles, CA 90095, USA. School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.

PMID: 24981571 DOI: 10.1088/0957-4484/25/29/295401

Abstract

Organic photovoltaics (OPVs) fabricated via solution processing are an attractive way to realize low cost solar energy harvesting. Bulk heterojunction (BHJ) devices are the most successful design, but their morphology is less controllable. In this manuscript, we describe a simple approach to realize 'ordered' BHJ morphology using two immiscible solvents with different boiling point and a quasi-bilayer approach. Tunable fine structures were demonstrated in poly(3-hexylthiophene) (P3HT) and [6,6]-Phenyl C61 butyric acid methyl ester (PCBM) model systems, and the devices with optimized fine structure showed a 33% efficiency enhancement compared to those with a planar bilayer structure.

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