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B. BARMAN1,* , K. C. SARMA1
We have synthesized ZnS nanocrystials embedded in a polyvinyl alcohol (PVA) as a matrix by chemical route. The formation of ZnS has been characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), UV-VIS absorption and Photoluminescence (PL) spectra. The TEM images as well as XRD studies confirm the nanometer size particles formation within the the polymer matrix. The average particle size is found to lie in the range of 3-6 nm. The band gap of the nanocrystalline material is determined from UV spectrograph. The absorption edge is shifted towards the lower wavelength side whicw shows a blueshift with respect to the bulk value. This is also supported by spectral response curves. An increase of molarity decrease the grain size which in turn increases the band gap.
ZnS, Nanocrystals, Blueshift, Energy band gap.
B. BARMAN, K. C. SARMA, Synthesis and optical properties of ZnS nanoparticles in PVA matrix, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1594-1597 (2010).
Submitted at: Aug. 20, 2010
Accepted at: Oct. 14, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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