Comparative study on the freezing temperature synthesised CdSe nanoparticles before and after annealing. (1st January 2013)

• Record Type: Journal Article
• Authors: Sinha, Subhojyoti; Chatterjee, Sanat Kumar; Ghosh, Jiten; Meikap, Ajit Kumar
• Is Part Of: Micro & nano letters. Volume 8:Number 1(2013)
• Page Start: 35
• Page End: 38
• Publication Date: 2013-01-01
• Subjects: annealing -- cadmium compounds -- freezing -- II‐VI semiconductors -- infrared spectra -- nanocomposites -- nanofabrication -- nanoparticles -- organic compounds -- particle size -- photoluminescence -- red shift -- ultraviolet spectra -- visible spectra -- wide band gap semiconductors; freezing temperature -- annealing -- thiyoglycolic acid‐capped cadmium selenide nanoparticles -- structural properties -- optical properties -- crystallinity -- particle size -- red shift -- absorption spectra -- lattice strain -- excitation wavelength‐dependent photoluminescence -- giant stokes shift -- temperature 273 K to 279 K -- CdSe; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2012.0800
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Thiyoglycolic acid‐capped CdSe nanoparticles have been synthesised at 273–279 K. A comparative study on the structural and optical characteristics of the as‐synthesised and annealed samples is done using state‐of‐the art instruments and software. Based on these studies here the authors report a colossal change in crystallinity, particle size and red shift in the absorption spectra upon annealing. Lattice strain is also found to increase by 18.77% upon annealing. Excitation wavelength‐dependent photoluminescence with giant Stokes shift and narrow full‐width at half‐maxima of both the samples is also reported, which may be useful for device application.