MoS2 decorated with graphene and polyaniline nanocomposite as an electron transport layer for OLED applications

The incorporation of two-dimensional MoS 2 and GO (graphene oxide) into polyaniline (PANI) matrix emerges as a productive way for the enhancement in electrical and optical assets of pure PANI. The ternary nanocomposite PANI–rGO–MoS 2 (PGM) is synthesized via in situ chemical oxidative polymerization...

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Bibliographic Details
Published inJournal of materials science. Materials in electronics Vol. 31; no. 2; pp. 1302 - 1316
Main Authors Choudhary, R. B., Mandal, Gobind
Format Journal Article
LanguageEnglish
Published New York Springer US 2020
Springer Nature B.V
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Summary:The incorporation of two-dimensional MoS 2 and GO (graphene oxide) into polyaniline (PANI) matrix emerges as a productive way for the enhancement in electrical and optical assets of pure PANI. The ternary nanocomposite PANI–rGO–MoS 2 (PGM) is synthesized via in situ chemical oxidative polymerization of aniline monomer using ammonium persulfate (APS) as an oxidant with varying MoS 2 contents. The surface morphological images of PGM nanocomposites declared the coating of PANI nanofibers, and GO sheets over stacked MoS 2 sheets are investigated by field emission scanning electron microscope and transmission electron microscope. The interaction between polyaniline, reduced graphene oxide, and molybdenum disulfide was established by Fourier transform infrared spectroscopy and Raman spectroscopy. The bandgap was calculated for optimized PGM3 nanocomposite, nearly 1.21 eV with a relatively slow decay component and a higher non-radiative rate of electron–hole recombination. The photoluminescence spectra of PGM3 nanocomposite showed four bands: violet, blue, green–blue, and green. The chromaticity was observed in the deep blue region with a color purity of 70%. The conductivity of the optimized PGM3 nanocomposite was enhanced by 184.43% as compared to pristine PANI. These results justified that the optimized PGM3 nanocomposite is a suitable candidate as an effective electron transport layer for high performance in organic light-emitting diode (OLED) devices.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-02643-9