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Title of Journal: J Mater Sci: Mater Electron

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Abbravation: Journal of Materials Science: Materials in Electronics

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Solid-state method for incorporation of lead sulfide nanoplates in poly(3,4-ethylenedioxythiophene) matrix as NIR materials

Authors: Hamid Dehghani, Ahmadreza Afraz,

Publish Date: 2015/11/25
Volume: 27, Issue:3, Pages: 2640-2644
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We investigate the direct incorporation of lead sulfide nanoplates (PbS-NP) in poly(3,4-ethylenedioxythiophene) (PEDOT) matrix without any additives. The PbS-NP was synthesized by using an ultrasonic assistance simple method and composite of them with PEDOT was carried out by a simple solid-state polymerization method. The TEM images, X-ray diffraction patterns and absorption spectra confirm the incorporation of PbS-NP in PEDOT matrix. The XRD pattern showed that the prepared PbS-NPs are crystalline in cubic rock salt structure with 8 nm average grain size. The UV/Vis/NIR spectrum of PEDOT/PbS-NP nanocomposite shows a characteristic peak at NIR region and a large blue shift rather than bulk lead sulfide. This shift confirms synergetic effect between PEDOT matrix and PbS-NPs and presence of quantum confinement effect for prepared PbS-NP. In addition, this characteristic peak is very much dependent on the PbS-NP concentration and can be used for design tunable NIR materials.



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