The III-V semiconductor InGaAs is a key material for photonics because it provides optical emission and absorption in the 1.55 μm telecommunication wavelength window. However, InGaAs suffers from pronounced nonradiative effects associated with its surface states, which affect the performance of nanophotonic devices for optical interconnects, namely nanolasers and nanodetectors. This work report...

A simple method to obtain homogeneous sub-monolayer coverage of metal oxide and chalcogenide nanocrystals onto porous oxide supports is described. Quantitative nanoparticle coverage was probed using photonic macroporous oxide supports. Composites of nanocrystals of TiO₂, Fe₃O₄ or CdS dispersed onto macroporous SiO₂ or ZrO₂ all show a predictable linear shift in the photonic stop band position.

DOI: 10.1002/aenm.201602923 suffer from safety problems arising from lithium anode and fast capacity fading due to the insulating nature of sulfur, the dissolution-induced polysulfide shuttle reaction, and large volume changes.[4–6] To address these issues, carbonaceous material[7,8] and conducting polymers[9] have been used to trap the high-order polysulfides in the cathodes; protective layers...

Yuan Yang, Guihua Yu, Judy J. Cha, Hui Wu, Michael Vosgueritchian, Yan Yao, Zhenan Bao,* and Yi Cui* Department of Materials Science and Engineering, and Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States and, SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences, 2575 Sand Hill Road, Menlo Park, California 940...

P-type Cu2FeSnS4 (CFTS) and Cu2ZnSnS4 (CZTS) quaternary chalcogenide films have been grown by the method of spin coating on glass substrates relate to 30 40 sccm sulfur flux. Physical properties obtained samples were investigated X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force (AFM) ultraviolet visible spectroscopy (UV-Vis) see effect deposition parameters thin film. T...

Li-SeS2 batteries balance the opposing and complimentary qualities of Li-S Li-Se by having a high specific capacity electrical conductivity. However, there is still lack knowledge regarding electrochemical characteristics all-solid-state (ASSB). Herein, transmission electron microscopy (TEM) used to reveal electrochemistry battery. It discovered that, without Polyethylene glycol (PEG), amorphou...

Red Pompeian paintings, very famous for their deep intensity, are currently suffering from darkening. The origins of this darkening degradation are not clearly identified yet and remain a major issue for curators. In the specific case of cinnabar (HgS)-based red pigment, a photoinduced conversion into black metacinnabar is usually suspected. This work is focused on the blackening of red cinnaba...