Direct band gap copper indium chalcogenides are of great technological importance in part because of their high photovoltaic conversion efficiency. Covalent superlattices constructed from copper indium chalcogenide clusters are of particular interest because they may combine open framework architecture with semiconducting properties. Here two photoluminescent covalent superlattices built from c...

The origin of photoluminescence in copper indium sulfide (CIS) quantum dots (Qdots) has previously been ascribed to a donor-acceptor pair (DAP) recombination, with a crystal lattice defect implicated as the origin of the donor state. In this study, electron energy-loss spectroscopy (EELS) was used to observe defect-rich compositional domains within individual CIS Qdots, supporting a model of de...

Hybrid nanostructures are interesting materials for numerous applications in chemistry, physics, and biology, due to their novel properties and multiple functionalities. Here, we present a synthesis of metal–semiconductor hybrid nanostructures composed of nontoxic I-III-VI semiconductor nanoparticles and gold. Copper indium sulfide selenide (CuInSSe) nanocrystals with zinc blende structure and ...

In the title compound, [Cu(C(25)H(22)P(2)S)(2)]PF(6), the Cu(I) atom, lying on a twofold rotation axis, adopts a distorted tetra-hedral geometry. The (diphenyl-phosphanylmeth-yl)diphenyl-phos-phane sulfide ligand coordinates to the Cu(I) atom through one S and one P atom, forming a stable five-membered chelate ring. The P atom of the PF(6) (-) anion also lies on a twofold rotation axis.

A novel quaternary sulfide, Ba5Cu8In2S12 (1), has been successfully synthesized via a high-temperature solid-state reaction. It contains Cu8S10S4/2 clusters as basic building blocks, which are connected to one another by discrete In3+ ions to generate a 3D copper-rich framework, where the Ba2+ cations reside. Interestingly, such large clusters that are fused by five crystallographically indepen...

The collaboration between Sharp Laboratories of America (SLA), Oregon State University (OSU) and ORNL focused on low thermal budget pulse thermal processing (PTP) technique to develop high performance copper zinc tin sulfide (CZTS) thin film system for advanced photovoltaic (PV) applications, with the goal to develop novel fabrication processes for the manufacture of low-cost, high-performance ...

Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted physical, chemical, and mineralogical characterization copper slag, along with preliminary tests. article focuses flotation, which two oneyear campaigns (2016 2017). The first campaign carried out using existing circuit plant. During second (2017), for sulfide o...

A copper(I)-catalyzed, (diacetoxyiodo)benzene [PhI(OAc)2]-mediated ring-expansion/thiolactonization of a-oxo ketene dithioacetals was efficiently realized via azidation of the internal olefinic C@H bond with sodium azide under mild conditions. Sequential amination, ring-expansion rearrangement, and thiolactonization occurred to form aminated thiolactones in the presence of acetic anhydride as t...