Structural and Optical Properties of Manganese‐Doped NanocrystallineZinc Oxide/Polyvinylidene Fluoride Flexible Composite Thin Films Deposited by the Sol–Gel Method. Issue 1 (19th January 2016)

• Record Type: Journal Article
• Authors: Bhunia, R.; Das, S.; Hussain, S.; Sehgal, G.; Chakraborty, B. R.; Bhar, R.; Pal, A. K.
• Is Part Of: Advances in polymer technology. Volume 37:Issue 1(2018)
• Page Start: 60
• Page End: 70
• Publication Date: 2016-01-19
• Subjects: Nanocomposites -- Optical Properties -- Raman Spectroscopy -- Secondary ion mass spectrometry; Plastics -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/adv.21642
• Languages: English
• ISSNs: 0730-6679

Abstract

ABSTRACT: Mn‐doped nanocrystalline ZnO (Mn x Zn1– x O) was incorporated in the polyvinylidene fluoride thin film for obtaining the free‐standing flexible film by the sol–gel technique. The effect of Mn‐ZnO loading on the optical and microstructural properties of the Mn‐ZnO/polyvinylidene fluoride (PVDF) composite films was studied critically for the as‐deposited and the poled samples. X‐ray photoelectron spectroscopy (XPS) and Raman spectroscopy were carried out to study the bonding environment. The XPS spectra recorded for poled samples from the fluorine‐terminated surface showed a very strong peak at ∼695 eV for F1s arising due to C–F bonds. Raman studies showed the presence of the predominant β phase of PVDF in the sample. Peaks related to ZnO nanocrystals were also observed in the Raman spectra. Photoluminescence spectra indicated a strong emission band at ∼2.79 eV in the ultraviolet region arising out of near band edge emission of free excitons.