Influence of CuS powder concentration on the construction of hybrid PVA/CuS thin films for polymer light-emitting applications

In this study, copper sulfide (CuS) semiconductor material is combined with a polyvinyl alcohol (PVA) polymer to synthesize a hybrid organic/inorganic thin film, due to their respective intrinsic properties and extensive array of applications in optical and electrical devices. The PVA organic polyme...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-02, Vol.31 (4), p.3456-3465
Main Authors: Sabah, Fayroz A., Abdul Razak, Ibrahim, Kabaa, E. A., Zaini, M. F., Omar, A. F.
Format: Article
Language:English
Subjects:
Banded structure
Characterization and Evaluation of Materials
Chemistry and Materials Science
Copper sulfides
Electrical resistivity
Emission
Grain size
Light emission
Materials Science
Miscibility
Morphology
Optical and Electronic Materials
Optical properties
Photoluminescence
Polymer films
Polymers
Polyvinyl alcohol
Semiconductor materials
Surface roughness
Synthesis
Thickness
Thin films
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Summary:In this study, copper sulfide (CuS) semiconductor material is combined with a polyvinyl alcohol (PVA) polymer to synthesize a hybrid organic/inorganic thin film, due to their respective intrinsic properties and extensive array of applications in optical and electrical devices. The PVA organic polymer was mixed with three different concentrations of CuS powder (0.002 g, 0.02 g, and 0.2 g), to determine the thickness of emissive layer for light-emitting applications. The structural, morphological, electrical, optical, and photoluminescence (PL) properties of the thin films were examined. The PVA/CuS thin films synthesized from CuS concentration of 0.2 g exhibited the largest grain size (37.3 nm), the highest thickness (17.48 μm), surface roughness (94.6 nm), conductivity (2.8 Ω cm, 7.55 × 10 3  cm 2 /V s, and 1.48 × 10 14 /cm 3 ), the lowest bandgap (3.59 eV) and the strongest emission bands. Thus, concentration of the precursor CuS material influences the structural, morphological, electrical, optical, and photoluminescence properties of organic/inorganic thin films. In addition, FTIR and PL spectra confirmed the miscibility/bonding of PVA polymer with CuS semiconductor material and exhibited the emission bands of the films, respectively.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-02893-y