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Applied Nanoscience

, Volume 8, Issue 6, pp 1325–1341 | Cite as

Study of interface chemistry between the carrier-transporting layers and their influences on the stability and performance of organic solar cells

  • Muhammad Hilal
  • Jeong In Han
Original Article
  • 25 Downloads

Abstract

This is the first study that described how the interface interactions of graphene oxide (GO) with poly(3-hexylthiophene): 3′H-cyclopropa [8,25] [5,6] fullerene-C60-D5h(6)-3′-butanoic acid 3′-phenyl methyl ester (PCBM) and with poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) are influencing the stability and performance of poly(3-hexylthiophene): poly(3-hexylthiophene) (P3HT) (P3HT:PCBM)-based organic solar cell. The interface functionalization of these carrier-transporting layers was confirmed by XRD pattern, XPS analysis, and Raman spectroscopy. These interfaces chemical bond formation helped to firmly attach the GO layer with PCBM and PEDOT:PSS layers, forming a strong barrier against water molecule absorption and also provided an easy pathway for fast transfer of free carriers between P3HT:PCBM layer and metal electrodes via the backbone of the conjugated GO sheets. Because of these interface interactions, the device fabricated with PCBM/GO composite as an electron transport layer and GO/PEDOT:PSS composite as hole transport layer demonstrated a remarkable improvement in the value of power conversion efficiency (5.34%) and reproducibility with a high degree of control over the environmental stability (600 h). This study is paving a way for a new technique to further improve the stability and PCE for the commercialization of OSCs.

Keywords

Bulk heterojunction organic solar cell Thin-film deposition Device fabrication Interface chemistry Electrical conductivity Stability 

Notes

Acknowledgements

This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the ministry of Education (NRF-2017R1D1A1B03030456).

Compliance with ethical standards

Conflict of interest

The authors clearly declared that there is no conflict of interest for this manuscript.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemical and Biochemical EngineeringDongguk University-SeoulSeoulRepublic of Korea

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