Growth and Characterization of Novel System of Nanoparticles Embedded in Phosphate Glass Matrix

Abstract

We present a study of

Novel PbSe nanocrystals doped fluorogermanate glass matrix

“…7). The low rate of changing the band gap at these temperatures may be due to the reduction of intrinsic defects at the nanoparticles glass interface [29][30][31][32]. Then the obtained results imply that the increase in nanoparticle size with increasing annealing temperature leads to a decrease in the band gap energy.…”

Synthesis and characterization of CdS nanocrystals embedded in germanate glasses

“…The obtained values of E opt show a decrease with increasing the annealing time and annealing temperature but with a slow rate at low annealing temperatures; on the other hand at higher annealing temperature, the rate of decreasing the E opt increases with increasing the annealing time (see Table 1). The low rate of changing the band gap at low temperatures may be due to the reduction of intrinsic defects at the nanoparticles glass interface (Mathieu et al 1995) and can be explained as following (Swelm et al 2011). At these short times, we have two opposite effects on the energy of the absorption edge (1) effect of growing which leads to a shift of absorption to lower energy side and (2) the reduction of intrinsic defects which cause a slight shift to higher energy side.…”

About One-Dimensional Conservative Systems with Position Depending Mass

“…Position depending mass systems have been relevant since the foundation of the classical mechanics and modern physics [1]- [5] (see reference there in). Actually, the interest for these type of problems has grown in modern physics due to fabrication of ultra thin semiconductors [6] [7], inhomogeneous crystals [8], quantum dots [9], quantum liquids [10], and neutrino mass oscillations [11] [12]. We also need to mention that this topic is important due to its relation with the foundation of the classical mechanics [13], and its not invariance under Galileo or Poincar-Lorentz transformations [13] [14].…”