Solution-Processed PEDOT:PSS/MoS2 Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells

Ramasamy, Madeshwaran Sekkarapatti; Ryu, Ka Yeon; Lim, Ju Won; Bibi, Asia; Kwon, Hannah; Lee, Ji-Eun; Kim, Dong Ha; Kim, Kyungkon

doi:10.3390/nano9091328

Open AccessArticle

Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells

by

Madeshwaran Sekkarapatti Ramasamy

,

Ka Yeon Ryu

,

Ju Won Lim

,

Asia Bibi

,

Hannah Kwon

,

Ji-Eun Lee

,

Dong Ha Kim

^*

and

Kyungkon Kim

^*

Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea

^*

Authors to whom correspondence should be addressed.

Nanomaterials 2019, 9(9), 1328; https://doi.org/10.3390/nano9091328

Submission received: 6 July 2019 / Revised: 7 September 2019 / Accepted: 11 September 2019 / Published: 16 September 2019

(This article belongs to the Special Issue Advances in Emerging Solar Cells)

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Abstract

An efficient hole-transporting layer (HTL) based on functionalized two-dimensional (2D) MoS₂-poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composites has been developed for use in organic solar cells (OSCs). Few-layer, oleylamine-functionalized MoS₂ (FMoS₂) nanosheets were prepared via a simple and cost-effective solution-phase exfoliation method; then, they were blended into PEDOT:PSS, a conducting conjugated polymer, and the resulting hybrid film (PEDOT:PSS/FMoS₂) was tested as an HTL for poly(3-hexylthiophene):[6,6]-phenyl-C₆₁-butyric acid methyl ester (P3HT:PCBM) OSCs. The devices using this hybrid film HTL showed power conversion efficiencies up to 3.74%, which is 15.08% higher than that of the reference ones having PEDOT:PSS as HTL. Atomic force microscopy and contact angle measurements confirmed the compatibility of the PEDOT:PSS/FMoS₂ surface for active layer deposition on it. The electrical impedance spectroscopy analysis revealed that their use minimized the charge-transfer resistance of the OSCs, consequently improving their performance compared with the reference cells. Thus, the proposed fabrication of such HTLs incorporating 2D nanomaterials could be further expanded as a universal protocol for various high-performance optoelectronic devices.

Keywords: organic solar cells; MoS₂; hole-transporting layer; oleylamine

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MDPI and ACS Style

Ramasamy, M.S.; Ryu, K.Y.; Lim, J.W.; Bibi, A.; Kwon, H.; Lee, J.-E.; Kim, D.H.; Kim, K. Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells. Nanomaterials 2019, 9, 1328. https://doi.org/10.3390/nano9091328

AMA Style

Ramasamy MS, Ryu KY, Lim JW, Bibi A, Kwon H, Lee J-E, Kim DH, Kim K. Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells. Nanomaterials. 2019; 9(9):1328. https://doi.org/10.3390/nano9091328

Chicago/Turabian Style

Ramasamy, Madeshwaran Sekkarapatti, Ka Yeon Ryu, Ju Won Lim, Asia Bibi, Hannah Kwon, Ji-Eun Lee, Dong Ha Kim, and Kyungkon Kim. 2019. "Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells" Nanomaterials 9, no. 9: 1328. https://doi.org/10.3390/nano9091328

APA Style

Ramasamy, M. S., Ryu, K. Y., Lim, J. W., Bibi, A., Kwon, H., Lee, J.-E., Kim, D. H., & Kim, K. (2019). Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells. Nanomaterials, 9(9), 1328. https://doi.org/10.3390/nano9091328

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Solution-Processed PEDOT:PSS/MoS₂ Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells

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