The e ect of a bu er layer on organic bulk hetrojunction solar cells of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61 butyric acid methyl ester fullerene derivative (PCBM) has been studied using impedance spectroscopy in the frequency range between 100 Hz and 1 MHz. The bu er layer interfaces with a metallic contact and with the organic bulk materials in uence the e ciency and the stabilit...

We studied growth, structure, stress, oxidation state as well as surface and interface structure and composition of thermally-evaporated thin MoO3 films on the technologically important III/V-semiconductor substrate GaAs(0 0 1). The MoO3 films grow with Mo in the 6+  oxidation state. The electrical resistance is tunable by the oxygen partial pressure during deposition from transparent insulatin...

UNLABELLED Molybdenum oxide (MoO3) is one of most suitable antireflection (AR) layers for silicon/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (Si/ PEDOT PSS) hybrid solar cells due to its well-matched refractive index (2.1). A simulation model was employed to predict the optical characteristics of Si/ PEDOT PSS hybrid solar cells with the MoO3 layers as antireflection coatings (...

Oxidative dehydrogenation (ODH) of propane was studied on zirconia-supported molybdenum oxide catalysts. The structure of the ZrO2 support and of the dispersed MoOx species was characterized by X-ray diffraction and by Raman and UV–visible spectroscopies. The structure of dispersed molybdena depends on the Mo surface density and on the temperature at which catalyst precursors are treated in air...

High power conversion efficiency (PCE) inverted organic photovoltaics (OPVs) usually use thermally evaporated MoO3 as a hole transporting layer (HTL). Despite the high PCE values reported, stability investigations are still limited and the exact degradation mechanisms of inverted OPVs using thermally evaporated MoO3 HTL remain unclear under different environmental stress factors. In this study,...

In this paper, the mesoporous molecular sieve SBA-16 with good dispersion was prepared by hydrothermal method. Under condition of Si/Mo= 1.0, MoO3/SBA-16 catalysts were iso-dipping method at 550 °C, 650 °C and 750 calcination temperature, which for synthesis diphenyl carbonate (DPC) from dimethyl (DMC) phenyl acetate (PA) used, uncalcined used as a reference. XRD, TG-DTA, XPS, ICP-MS, FT-IR, BE...

Lignin is an attractive feedstock for low molecular weight biobased phenols using depolymerization strategies such as reductive catalytic fractionation or fast pyrolysis. Such often yield a product mixture enriched in lignin-derived monomers with methoxy substituents. Selective hydrodeoxygenation (HDO) effective methodology to demethoxylate these into valuable alkylated phenols. Here, we report...

In this work, planar heterojunction organic photovoltaic cells (PHJ-OPVs) based on alpha-sexithiophene (α-6T) and fullerene active materials were investigated. We have studied the effect of hole transporting layer (HTL) performances PHJ-OPVs. The HTLs are molybdenum trioxide (MoO3), cuprous iodide CuI MoO3 coupled with (MoO3/CuI). PHJ-OPVs fabricated using thermal evaporation/sublimation techni...

The modification by molybdenum trioxide (MoO3) buffer layer on the electronic structure between Co and black phosphorus (BP) was investigated with ultraviolet photoemission spectroscopy (UPS) X-ray (XPS). It found that MoO3 could effectively prevent destruction of outermost BP lattice during deposition, symmetry remaining maintained. There is a noticeable interfacial charge transfer in addition...