Interfacial improvement of hole transporting layer using graphene quantum dots for effciency enhancement of organic photovoltaics

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Published: Dec 26, 2019
Keywords:
Graphene quantum dots interfacial contact organic photovoltaics convective deposition hole transporting layer

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Saisunee Phattum
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus,Nakhom Pathom, Thailand
Pichitchai Pimpang
Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanuloke, Thailand
Sawitree Wongrerkdee
Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna Tak, Tak, Thailand
Khathawut Lohawet
National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, Thailand
Anusit Kaewprajak
National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, Thailand
Pisist Kumnorkaew
National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, Thailand
Supphadate Sujinnapram
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus,Nakhom Pathom, Thailand
Sasimonton Moungsrijun
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus,Nakhom Pathom, Thailand
Sucheewan Krobthong
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus,Nakhom Pathom, Thailand
Sutthipoj Wongrerkdee
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus,Nakhom Pathom, Thailand

Abstract

Graphene quantum dots (GQDs)/PEDOT:PSS films exhibit the improved interfacial contact with substrate encouraging better charger transport in organic photovoltaics (OPVs). The GQDs/PEDOT:PSS films were successfully prepared by mixing of GQDs and PEDOT:PSS under sonication. The mixtures were deposited on SnO2:F (FTO) substrate using a convective deposition system and characterized. Optical transmittance of the GQDs/PEDOT:PSS films reveals higher average value than that of the PEDOT:PSS films. Surface contact angles display similar decreasing trends for all films. For OPVs fabrication, GQDs/PEDOT:PSS films were used as a hole transporting layer in the OPV device. Power conversion effciency (PCE) is enhanced to the maximum value of 1.71% for the GQDs/PEDOT:PSS film-based in comparison to the PEDOT:PSS film-based (1.14%). The enhancement is dominating correlation to the improved short-circuit current density and fill factor due to the high transmittance and the improved interfacial contact, respectively. GQDs are not only improving interfacial contact on the FTO substrate but also full-filling coverage over the substrate. Therefore, GQDs are demonstrated as a potential additive material for PCE enhancement of OPVs.

Article Details

How to Cite
Phattum, S., Pimpang, P., Wongrerkdee, S., Lohawet, K., Kaewprajak, A., Kumnorkaew, P., Sujinnapram, S., Moungsrijun, S., Krobthong, S., & Wongrerkdee, S. (2019). Interfacial improvement of hole transporting layer using graphene quantum dots for effciency enhancement of organic photovoltaics. Interdisciplinary Research Review, 14(6), 57–61. Retrieved from https://ph02.tci-thaijo.org/index.php/jtir/article/view/239022
Issue
Vol. 14 No. 6 (2019): November-December
Section
Review Article

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