where, α=3.7 eV nm2
, Eg(0)=1.7 eV, d=particle size (nm) and Eg =
band gap value in eV. It is found that the size of the primary CdSe
nanoparticles in all the microemulsions was about 2 nm.
The CdSe nanomaterials were further characterized by TEM
measurements. It was observed that those formed in the microemu-sions with lower water content, w0= 10 were of rod shaped as seen in
Fig. 2(a). The lengths and breadths of the rods were up to 1 μm and
200 nm respectively with aspect ratios from 3 to 5. A faint lining
outside each rod is clearly visible in the TEM image. From this it is
confirmed that the CdSe primary nanoparticles of size 2 nm get
associated to form bigger agglomerates which are entangled within