Optical Spectroscopy of Nanophase Materials

Preparation, characterization and optical properties of nanostructured ZnO thin films

“…The great interest in producing novel ultrafast nonlinear optical devices and short wavelength semiconductor lasers has motivated research into wide-band-gap semiconductors nanocrystals [1][2][3][4]. The studies of excited state relaxation and light emitting properties of II-VI systems have attracted much attention due to their strong nonlinear optical effects and potential applications in the rising areas of optical communication and optical computing [5][6][7][8].…”

From Nanotechnology to Nanoengineering

“…The techniques used for nanostructures characterization are not limited to those presented here, and readers interested to get more information are encouraged to refer the books like Burda et al (2000), Xu (2001), Cao (2004), Wang (2000a, b). Table 2.1 presents summary of those techniques addressed in this book for better understanding and comparison.…”

“…In a standard UV-Vis spectrophotometer, a beam of light is split; one half of the beam (the sample beam) is directed through a transparent cell containing a solution of the compound being analyzed; and one half (the reference beam) is directed through an identical cell that does not contain the compound but contains the solvent. UV-Vis spectrophotometery is a powerful technique to obtain useful information about optical properties of nanostructure and their size (Burda et al 2000). For example, reduction in the silver ion to silver nanoparticles (SNPs) results the visual change of color from yellow to red.…”

Nanotechnology for Chemical Engineers

“…UV-Vis spectrophotometery is a powerful technique to obtain useful information about optical properties of nanostructure and their size (Burda et al 2000). In a standard UV-Vis spectrophotometer, a beam of light is split; one half of the beam (the sample beam) is directed through a transparent cell containing a solution of the compound being analyzed; and one half (the reference beam) is directed through an identical cell that does not contain the compound but contains the solvent.…”