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- Title
Multiwalled CNTs/copper sulfide hybrids embedded in polyaniline thin films for near-infrared (NIR) photo detecting applications.
- Authors
Zia, Ramsha; Masood, Muhammad Talha; Hussain, Zakir; Liaqat, Usman; Javed, Safina Iram; Hussain, Sajid; Umar, Zeshan Adeel
- Abstract
In this study, the polyaniline/multiwalled carbon nanotubes–copper sulfide nanoparticles (PANI/MWCNTs–CuS NPs) hybrid composite-based thin films were deposited on top of FTO coated glass substrate for IR (infrared) detection. These hybrid composites were synthesized using in-situ oxidative polymerization of aniline monomer with MWCNTs–CuS NPs mixed in. The samples were prepared using MWCNTs–CuS NPs hybrids with different CuS NPs content. The successful synthesis of these composites was confirmed using Scanning Electron Microscopy (SEM), X-ray powder diffraction (XRD), Raman spectroscopy, and UV–Vis Spectroscopy. The effect of CuS content on the photo-detecting ability of these composite films was investigated. This was done by measuring the ohmic behavior of these composite films. Their J–V behavior in dark as well as under constant exposure to 850 nm infrared light was measured. Increase in CuS content in these composites clearly enhanced their IR light detectability which is attributed to the reduction in composite’s band gap. The ohmic resistance also decreased significantly with increased CuS content (both in dark and under illumination). However, beyond a threshold level of added CuS content, their ohmic resistance suddenly started to rise again along with their decreased photo-detectability.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 22, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11035-z