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

Title
Solution-Processed PEDOT:PSS/MoS2 Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells
Authors
Ramasamy, Madeshwaran SekkarapattiRyu, Ka YeonLim, Ju WonBibi, AsiaKwon, HannahLee, Ji-EunKim, Dong HaKim, Kyungkon
Ewha Authors
김동하김경곤Sekkarapatti Ramasamy Madeshwaran
SCOPUS Author ID
김동하scopus; 김경곤scopus
Issue Date
2019
Journal Title
NANOMATERIALS
ISSN
2079-4991JCR Link
Citation
NANOMATERIALS vol. 9, no. 9
Keywords
organic solar cellsMoS2hole-transporting layeroleylamine
Publisher
MDPI
Indexed
SCIE WOS
Document Type
Article
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-C-61-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.
DOI
10.3390/nano9091328
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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