Cation Substitution of Copper by Silver in the Earth-Abundant Compound Cu2ZnSnS4: Comparative Study of Structural, Morphological, and Optical Properties

2021 ◽  
Vol 50 (3) ◽  
pp. 1527-1534
Author(s):  
G. Bousselmi ◽  
Naoufel Khemiri ◽  
S. Ahmadi ◽  
A. Cantarero ◽  
M. Kanzari
Keyword(s):  
Optical Properties ◽  
Comparative Study ◽  
Cation Substitution ◽  
The Earth ◽  
Earth Abundant

Study of Structural and Optical Properties of Cu2ZnSnS4 and Cu2ZnGeS4 Thin Films Synthesized by Sulfurization of Stacked Metallic Layers

2015 ◽  
Vol 814 ◽  
pp. 44-48 ◽  
Author(s):  
Ling Huang ◽  
Hong Mei Deng ◽  
Jun He ◽  
Lei Lei Chen ◽  
Ping Xiong Yang ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Blue Shift ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
X Ray ◽  
The Earth ◽  
Toxic Materials ◽  
Earth Abundant ◽  
Semiconducting Compounds

Cu2ZnSnS4and Cu2ZnGeS4thin films made from the earth abundant and non-toxic materials are quaternary semiconducting compounds which have received increasing interest for solar cells applications. Cu2ZnSnS4and Cu2ZnGeS4thin films have been synthesized by sulfurization of radio frequency magnetron sputtered precursors. The structural and optical properties of the thin films have been investigated and discussed. The result of X-ray diffraction demonstrates that the Cu2ZnSnS4and Cu2ZnGeS4thin films have kesterite (KS; space groupI) crystal structure. An obvious blue shift is observed in the Raman spectra as smaller Ge replaces Sn. It is due to the fact that the radius of Ge cation is smaller than that of Sn cation , which results in the shrink of the lattice. Further transmission spectra demonstrate that the values of band gap for CZTS and CZGS thin films are 1.54 eV and 1.98 eV, respectively.

A Nanoscale Adventure with Silicon: Synthesis, Surface Chemistry, and other Surprises

2015 ◽  
Vol 242 ◽  
pp. 383-390
Author(s):  
Md Hosnay Mobarok ◽  
Tapas K. Purkait ◽  
Jonathan G.C. Veinot
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Chemistry ◽  
Research Group ◽  
Size Dependent ◽  
Earth Abundant ◽  
Potential Applications ◽  
Si Quantum Dots

The preparation and surface chemistry Si quantum dots (SiQDs) are currently an intense focus of research because of their size dependent optical properties and many potential applications. SiQDs offer several advantages over other quantum dots; Si is earth abundant, non-toxic and biocompatible. This account briefly highlights recent advancements made by our research group related to the synthesis, functionalization, surface dependent optical properties and applications of SiQDs.

A comparative study on the nonlinear optical properties of diphenyl ether and diphenyl sulfide compounds

2000 ◽  
Vol 10 (7) ◽  
pp. 1581-1584 ◽  
Author(s):  
Bo Zhao ◽  
Changyun Chen ◽  
Zhihua Zhou ◽  
Yang Cao ◽  
Ming Li
Keyword(s):  
Optical Properties ◽  
Comparative Study ◽  
Nonlinear Optical ◽  
Diphenyl Ether ◽  
Nonlinear Optical Properties ◽  
Diphenyl Sulfide

scholarly journals From Isolated Porphyrin Ligands to Periodic Al-PMOF: A Comparative Study of the Optical Properties Using DFT/TDDFT

2020 ◽  
Vol 124 (39) ◽  
pp. 21751-21760
Author(s):  
Andres Ortega-Guerrero ◽  
Maria Fumanal ◽  
Gloria Capano ◽  
Berend Smit
Keyword(s):  
Optical Properties ◽  
Comparative Study

Comparative study on the optical properties and stability of linear and branched polysilanes

2007 ◽  
Vol 126 (2) ◽  
pp. 827-832 ◽  
Author(s):  
Nianfang Ma ◽  
Ying Yu ◽  
Zhengguang Sun ◽  
Shiqiang Huang
Keyword(s):  
Optical Properties ◽  
Comparative Study

scholarly journals Sustainable Hydrogenation of Nitroarenes to Anilines with Highly Active In-Situ Generated Copper Nanoparticles

2020 ◽  
Author(s):  
Fatma Pelin Kinik ◽  
Tu Ngugen ◽  
Mounir Mensi ◽  
Christopher Ireland ◽  
Kyriakos Stylianou ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Hydrogenation Reaction ◽  
Hydrogen Gas ◽  
Proof Of Concept ◽  
Drug Molecules ◽  
Highly Active ◽  
The Earth ◽  
Earth Abundant ◽  
Stability Issues

<div> <div> <div> <p>Metal nanoparticles (NPs) are usually stabilized by a capping agent, a surfactant, or a support material, to maintain their integrity. However, these strategies can impact their intrinsic catalytic activity. Here, we demonstrate that the in-situ formation of copper NPs (Cu0NPs) upon the reduction of the earth-abundant Jacquesdietrichite mineral with ammonia borane (NH3BH3, AB) can provide an alternative solution for stability issues. During the formation of Cu0NPs, hydrogen gas is released from AB, and utilized for the reduction of nitroarenes to their corresponding anilines, at room temperature and under ambient pressure. After the nitroarene-to-aniline conversion is completed, regeneration of the mineral occurs upon the exposure of Cu0NPs to air. Thus, the hydrogenation reaction can be performed multiple times without the loss of the Cu0NPs’ activity. As a proof-of-concept, the hydrogenation of drug molecules “flutamide” and “nimesulide” was also performed and isolated their corresponding amino-compounds in high selectivity and yield. </p> </div> </div> </div>

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