Luminescence Properties of ZnS:Co Nanoparticles

Abstract

An aqueous solution method has been developed for synthesizing size-controlled ZnS:Co nanocrystals with a relatively narrow size distribution. The nanocrystal samples were characterized by UV-Vis absorption spectra and photoluminescence spectra. We prepared narrow size distribution particles under different synthesis conditions. The effect of manganese concentration on the photoluminescence properties was investigated. Luminescence intensity in different excitation wavelength correlates with different size of ZnS:Co nanocrystals on luminescence spectra. We found that by narrowing the size distribution and doping concentration, ZnS:Co samples can be prepared with high luminescence intensity.

Synthesis, physicochemical properties and antibacterial activity of hybrid nanocomposite of ZnS nanoparticles- decorated GO@CS

“…By increasing the content of GO@CS in ternary composite (8 and 12 wt%), the upturn of opacity and bulky features of the sample seem to hinder the recombination of the photogenerated electron-hole pairs, hence decrementing the PL intensity. Such concentration quenching behavior was reported before [79].…”

Shape-dependent optoelectrical investigation of Cu2+xCd1−xSnS4thin films for solar cell applications

“…A very thin layer of film (1-2 mm) can absorb over 90% of the photons over the spectrum with energy higher than that of the band gap. 40 The results suggest that the films have direct allowed transition when the value of n is selected as 1/2. The band gap of each Cu 2+x Cd 1Àx SnS 4 thin film was determined by extrapolating the linear region to the energy axis.…”