Background

Nanoparticles of the compound semiconductor CdSe exhibit different fluorescence emission spectra depending on their size, and they also have high fluorescence intensity, stability and monochromaticity. Therefore, these particles are being actively studied as a visible-ultraviolet light emitting material and display material, and for use in medical/biochemical applications such as fluorescent markers. If the small-angle X-ray scattering method is used, differences in particle size on the order of a few nm can be accurately determined in a short time.