PEDOT:PSS/SWCNTs as a Transparent Electrode for Organic Photovoltaic Devices

Hassen Derouiche; Abdellatif Belhadj Mohamed

doi:10.1115/1.4006915

Journal of Nanotechnology in Engineering and Medicine | Volume 3 | Issue 1 | SPECIAL SECTION: SIMULATION AND EXPERIMENTAL STUDIES AND APPLICATIONS OF CARBON NANOTUBES AND GRAPHENES IN ENGINEERING AND MEDICINE

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SPECIAL SECTION: SIMULATION AND EXPERIMENTAL STUDIES AND APPLICATIONS OF CARBON NANOTUBES AND GRAPHENES IN ENGINEERING AND MEDICINE

PEDOT:PSS/SWCNTs as a Transparent Electrode for Organic Photovoltaic Devices

Hassen Derouiche and Abdellatif Belhadj Mohamed

[+] Author and Article Information

Hassen Derouiche¹

Photovoltaic and Semiconductors Laboratory, Research and Technical Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050 Hammam-Lif, Tunisiahderouiche@yahoo.fr

Abdellatif Belhadj Mohamed

Photovoltaic and Semiconductors Laboratory, Research and Technical Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050 Hammam-Lif, Tunisia

Corresponding author.

J. Nanotechnol. Eng. Med 3(1), 010901 (Aug 13, 2012) (4 pages) doi:10.1115/1.4006915 History: Received February 18, 2012; Revised May 15, 2012; Published August 13, 2012

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Abstract

We have fabricated a flexible organic solar cells, with an active layer of poly(3-hexylthiophene) (P3HT) blended with Fullerene derivative [6,6]-phenyl–C61–butyric acid methyl ester (PCBM) which was deposited by spin coating. The poly(3,4-ethylene dioxythiophene) poly(4-styrenesulfonate) (PEDOT:PSS), doped with ethylene glycol (EG) and single wall carbon nanotubes (SWCNTs), is heavily doped and therefore used as conductive transparent electrode rather than electron blocking layer. Likewise, we have deposited a layer of PEDOT:PSS/SWCNTs by spin coating. This layer is coated onto polyethylene terephthalate (PET) substrates. We have also compared the photovoltaic characteristics of the two different structures with PEDOT:PSS/SWCNTs or PEDOT:PSS/SWCNTs/PEDOT:PSS photoanode. Both structures show significant photovoltaic behavior. However, the power conversion efficiency has been scaled up from 1.02% to 1.93% resulting from the use of second layer of PEDOT:PSS.

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Figure 1

TEM image of SWCNTs

FTIR spectra of (a) SWCNTs and (b) PEDOT:PSS/SWCNT

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Figure 2

FTIR spectra of (a) SWCNTs and (b) PEDOT:PSS/SWCNT

XRD patterns of (a) PEDOT:PSS and (b) PEDOT:PSS/SWCNTs thin films

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Figure 3

XRD patterns of (a) PEDOT:PSS and (b) PEDOT:PSS/SWCNTs thin films

Optical transmittance of the PET/PEDOT:PSS/SWCNTs with the inset showing the absorption of the P3HT:PCBM layer

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Figure 4

Optical transmittance of the PET/PEDOT:PSS/SWCNTs with the inset showing the absorption of the P3HT:PCBM layer

AFM image of (a) P3HT after thermal annealing and (b) P3HT:PCBM thin film

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Figure 5

AFM image of (a) P3HT after thermal annealing and (b) P3HT:PCBM thin film

I/V characteristics of PET/PEDOT:PSS/SWCNTs/P3HT:PCBM/Al/PVDF (--•--) and PET/PEDOT:PSS/SWCNTs/PEDOT:PSS/P3HT:PCBM/Al/PVDF (--▪--)

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Figure 6

I/V characteristics of PET/PEDOT:PSS/SWCNTs/P3HT:PCBM/Al/PVDF (--•--) and PET/PEDOT:PSS/SWCNTs/PEDOT:PSS/P3HT:PCBM/Al/PVDF (--▪--)

Schematic diagram of the organic solar cell

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Figure 7

Schematic diagram of the organic solar cell

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Derouiche H, Mohamed A. PEDOT:PSS/SWCNTs as a Transparent Electrode for Organic Photovoltaic Devices. ASME. J. Nanotechnol. Eng. Med. 2012;3(1):010901-010901-4. doi:10.1115/1.4006915.

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PEDOT:PSS/SWCNTs as a Transparent Electrode for Organic Photovoltaic Devices

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