Open AccessComparative study on the freezing temperature synthesised CdSe nanoparticles before and after annealing
Author(s) -
Sinha Subhojyoti,
Chatterjee Sanat Kumar,
Ghosh Jiten,
Meikap Ajit Kumar
Publication year - 2013
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2012.0800
Subject(s) - crystallinity , annealing (glass) , photoluminescence , materials science , nanoparticle , stokes shift , particle size , wavelength , blueshift , analytical chemistry (journal) , nanotechnology , optoelectronics , chemistry , luminescence , metallurgy , composite material , chromatography
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.