Luminescence study of ZnSe/PVA (polyvinyl alcohol) composite film

Journal Article · Fri May 06 04:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946626· OSTI ID:22606606

Lahariya, Vikas ^[1]

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1. Amity School of Applied Science, Amity University Haryana Panchgaon, Manesar, Haryana 122413 (India)

The ZnSe nanocrystals have been prepared into poly vinyl alcohol(PVA) polymer matrix on glass using ZnCl2 and Na2SeSO3 as zinc and selenium source respectively. Poly vinyl Alcohol (PVA) used as polymer matrix cum capping agent due to their high viscosity and water solubility. It is transparent for visible region and prevents Se- ions to photo oxidation. The ZnSe/PVA composite film was deposited on glass substrate. The film was characterized by X Ray Diffraction (XRD) and UV-Visible absorption Spectroscopy and Photoluminescence. The X Ray Diffraction (XRD) study confirms the nanometer size (10 nm) particle formation within PVA matrix with cubic zinc blend crystal structure. The UV-Visible Absorption spectrum of ZnSe/PVA composite film shown blue shift in absorption edge indicating increased band gap due to quantum confinement. The calculated energy band gap from the absorption edge using Tauc relation is 3.4 eV. From the Photoluminescence study a broad peak at 435 nm has been observed in violet blue region due to recombination of surface states.

• OSTI ID: 22606606
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1728; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
CRYSTAL STRUCTURE
FILMS
GLASS
NANOCOMPOSITES
NANOSTRUCTURES
OXIDATION
PHOTOLUMINESCENCE
PVA
RECOMBINATION
SELENIUM
SUBSTRATES
SURFACES
X RADIATION
X-RAY DIFFRACTION
ZINC
ZINC SELENIDES