Three-dimensional hierarchical nanostructures were synthesized by the halide chemical vapor deposition of InGaN nanowires on Si wire arrays. Single phase InGaN nanowires grew vertically on the sidewalls of Si wires and acted as a high surface area photoanode for solar water splitting. Electrochemical measurements showed that the photocurrent density with hierarchical Si/InGaN nanowire arrays in...

Halide perovskite and silicon heterojunction solar cells present sensitive contact layers prone to damage during ITO deposition. We study the effect of pulsed laser deposition pressure on mitigation improved cell performance.

Tandem solar cells constructed from a crystalline silicon (c-Si) bottom cell and a low-cost top cell offer a promising way to ensure long-term price reductions of photovoltaic modules. We present a four-terminal tandem solar cell consisting of a methyl ammonium lead triiodide (CH3NH3PbI3) top cell and a c-Si heterojunction bottom cell. The CH3NH3PbI3 top cell exhibits broad-band transparency ow...

Silicon and germanium containing heteroaromatic sulfides have been prepared using phase transfer catalytic (PTC) system thiol / Si or Ge containing alkyl halide / solid KOH / 18- crown-6 / toluene. The target sulfides were isolated in yields up to 92 %. It has been found that 2-{[dimethyl (beta-triethylgermylethyl)-silylmethyl]thio}-1-methylimidazole and 2-{[dimethyl(beta-triphenylsilylethyl) s...

Vacuum-Evaporated Mixed-Halide Perovskite Layers In article number 2200482, Ashok Vaseashta and co-workers investigate the structural optical properties of mixed-halide perovskite layers deposited on black silicon by sequential co evaporation methods. The is formed using plasma reactive ion etching. authors demonstrate a significant reduction in reflection layers. This achieved without compromi...

A urea-based tripodal receptor L substituted with p-cyanophenyl groups has been studied for halide anions using (1)H NMR spectroscopy, density functional theory (DFT) calculations, and X-ray crystallography. The (1)H NMR titration studies suggest that the receptor forms a 1:1 complex with an anion, showing a binding trend in the order of fluoride > chloride > bromide > iodide. The interaction o...

Silicon and germanium containing pyridine aldoxime, ketoxime and amidoxime O-ethers have been prepared using phase transfer catalytic systems oxime alkyl halide solid KOH 18-crown-6 benzene and oxime alkyl halide solid K(2)CO(3) or Cs(2)CO(3) 18-crown-6 toluene. Cytotoxic activity of silicon and germanium containing pyridine oxime O-ethers was tested in vitro on two monolayer tumor cell lines: ...

Films of colloidal CsPbX3 (X = I, Br or Cl) nanocrystals, prepared by solution drop-casting or spin-coating on a silicon substrate, were exposed to a low flux of X-rays from an X-ray photoelectron spectrometer source, causing intermolecular C═C bonding of the organic ligands that coat the surface of the nanocrystals. This transformation of the ligand shell resulted in a greater stability of the...

The cleavage of silicon–hydrogen bonds to generate silicon-containing metal complexes has played an essential role in the preparation organosilicon compounds. Herein, we report reaction cyclopentadienone iridium complex 1 with hydrosilanes afford hydroxycyclopentadienyl silyl 4 via umpolung Si–H bond. nucleophilicity Ir–Si bond resulting was demonstrated allyl halide and ethyl acrylate. Further...

ABSTRACT Metal halide perovskites have revolutionized the field of solution-processable photovoltaics. Within just a few years, the power conversion efficiencies of perovskite-based solar cells have been improved significantly to over 20%, which makes them now already comparably efficient to silicon-based photovoltaics. This breakthrough in solution-based photovoltaics, however, has the drawbac...