Growth and characterization of 2-amino-5-methylpyridinium phosphate crystals

Nithya, S.; Shekar, B. Chandar; Aranganayagam, K. R.; Boopathi, K.

doi:10.1016/j.matpr.2020.04.053

Cited by 2 publications

(2 citation statements)

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“…Silver doped CdS system exhibits high absorption in ultraviolet region (≈ 248 nm); however, it decreases in visible and near IR regions. This blue shift in absorption spectrum is analogous to the results reported by Nithya and Boopathi [36] where they carried out experimental study of Ag doping effects on CdS with various concentrations and presented structural (XRD, SEM) and optical properties (absorption, FTIR) of CdS nanoparticles. Difference may be due to fact that they focused on experimental study of wurtzite CdS while our findings are theoretical, based on rock-salt CdS structure, calculated within DFT framework with certain approximation in Wien2k code.…”

Section: Optical Propertiessupporting

confidence: 84%

“…Shift in absorption peaks may be related to quantum size effect and is associated with decrease in crystallite size [35]. Shift in absorption peaks with increase of Ag concentrations represents blue shift which points strong bonding and interaction of dopant (Ag) atoms with CdS [36]. Blue shift may be associated with reasoning that introducing Ag into host rock-salt CdS lattice induces defects, which cause shift in absorption curves.…”

Section: Optical Propertiesmentioning

confidence: 99%

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Optical Changes in Rock-salt CdS System under Increasing Silver Concentrations Effects

et al. 2018

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Current research is a computational study on optical properties of Ag doped CdS based on the Perdew-Burke-Ernzerhof parameterized generalized gradient approximations. Observing change in optical properties under various concentrations on CdS:Ag system, by fixing supercell size is a focus of study using density functional theory. Computational formulation is done by substitution of Cd atoms with Ag atoms in host CdS lattice. Results reveal that optical properties are enhanced upon increasing dopant concentration. Optical absorption shows blueshift and increases in visible region. Coupling of S p and Ag s states are obvious from plots of density of states. However, Ag doping brings significant change in optical properties which may lead towards advocacy of CdS for optoelectronic devices.

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Section: Optical Propertiessupporting

confidence: 84%

Section: Optical Propertiesmentioning

confidence: 99%