Newly discovered copper silver bismuth iodide films have attracted a lot of interest as lead-free emerging material for active layers solar cells because their promising optical and photovoltaic properties. This study is the first to describe optimization annealing temperature Cu6AgBiI10 cells. By using single-step spin coating technique, were fabricated, in which hot casting drops cast onto preheated substrates. The trigonal crystal's structure was confirmed X-Ray Diffraction surface...

Bismuth oxyiodide (BiOI) is expected to be promising material for photovoltaic devices since it has good activity under the visible range. Here, we studied annealing treatment on BiOI and its effect application. Firstly, synthesized from Bi(NO3)3 KI was annealed at varied temperatures (100–550 °C). The structural investigation by X-ray diffraction Raman spectroscopy analysis supported with morphology optical scanning electron microscope (SEM) UV-Visible spectroscopy. Due heating treatment,...

Band gap photoluminescence (PL) of single-walled carbon nanotubes (SWCNTs) encapsulating C60 fullerenes (nanopeapods) is examined over a wide range diameters (∼1.25−1.55 nm). The encapsulated induce characteristic PL peak shifts that strongly depend on the tube diameter (dt) and "2n + m" family type {type I [mod(2n m, 3) = 1] II 2]}. This behavior can be explained by strain-induced band due to insertion hybridization between electronic states SWCNTs C60. present results provide significant...

An efficient and versatile growth of thin-layer carbon nanotubes on a flexible aluminum foil (for kitchen use) by catalyst-supported chemical vapor deposition is reported. The used in the present experiment commercially available for use. electron-beam dip-coating have been preparing catalysts foil. Vertically aligned CNTs with typical diameters 2.5-6.0 nm lengths up to 90 µm are obtained when ethanol combination Fe Co catalyst particles at temperature around 650 °C under an Ar/H(2) gas...

Abstract Bismuth oxyhalides are becoming a promising contender for photovoltaic applications due to its non-toxic nature and decent optical properties. This study mainly deals with clarifying the effects of phase transformations on structure, optical, electrical properties BiOI thin film prepared via dip-successive ionic layer adsorption reaction (SILAR) method at different annealing temperatures ranging from 100 400 °C. Therefore, significant (i.e., existence Bi 7 O 9 I 3 5 have been...

ABSTRACT The recent development of wireless communication technology has increased the risk electronic equipment malfunctions and information leaks. To address this issue, we developed evaluated a lightweight flexible electromagnetic shielding material that can be applied to wearable devices by combining carbon nanotubes elastomer materials.

Investigation of the Chinese crude drug "Xiebai," bulbs Allium chinense G. Don (Liliaceae), led to isolation 2 saponins, xiebai-saponin I (laxogenin 3-O-beta-xylopyranosyl (1-->4)-[alpha-arabinopyranosyl (1-->6)-beta-glucopyranoside) (1) and laxogenin 3-O-alpha-arabinopyranosyl (1-->6)-beta-glucopyranoside (2), aglycone, (3), together with chalcones, isoliquiritigenin (4) isoliquiritigenin-4-O-glucoside (5), beta-sitosterol glucoside (6). Compounds 1-5 were tested in vitro for their...

Exohedral C60-based metallofullerenes, CsC60, have been synthesized and successfully encapsulated into single-wall carbon nanotubes (SWNTs) in high yield by reducing C60 molecules anions. High-resolution transmission electron microscopy (HRTEM) images situ energy loss spectroscopy (EELS) indicate that Cs atoms align within SWNTs as CsC60 exohedral the formal charge state of encaged is expressed Cs+1C60-1. The present peapods with metallofullerenes provide a new insight possibility to...

The structural, optical, electrical, thermodynamic, superconducting, and mechanical characteristics of LiGa2Ir full-Heusler alloys with the MnCu2Al configuration were comprehensively examined in this work using first-principles computation approach premised upon density functional analysis. This theoretical is first to investigate influence pressure on optical LiGa2Ir. structural chemical bonding analysis shows that hydrostatic caused a decrease lattice constant, volume, bond length each...

We investigate the effects of ${\mathrm{C}}_{60}$ fullerene encapsulation on radial breathing mode (RBM) semiconducting single-wall carbon nanotubes (SWCNTs) under tunable laser excitations. The changes in RBM frequencies after insertions show characteristic behavior; higher frequency shifts are observed case smaller diameter tubes (${d}_{t}\ensuremath{\lesssim}1.32\text{ }\text{ }\mathrm{nm}$) and lower shifts, larger (${d}_{t}\ensuremath{\gtrsim}1.32\text{ }\mathrm{nm}$). satisfactorily...

Bismuth oxyiodide (BiOI) solar cells have been fabricated using a modified successive ionic layer adsorption and reaction (SILAR) method. To adjust the parameter of reaction, we involved precursor molarity variation from 2 to 10 mM in our BiOI films preparation. The successful formation has indicated by existence tetragonal phase BiI internal stretching mode XRD patterns Raman spectra, respectively. By gradual increase molarity, wide absorption redshift are observed UV-visible spectra. In...

Photoluminescence (PL) from purified (>90%) double-wall carbon nanotubes (DWNTs), which have been synthesized by zeolite catalyst-supported chemical vapor deposition (zeolite-CCVD), of very small diameters (0.8-nm average inner tube) is reported. The PL contour mappings for various ratios (1−90%) double- versus single-wall thermal oxidation enabled us to unambiguously identify the chirality tubes DWNTs synthesized. After extensive high-temperature at 700 °C, high-purity ∼0.8 nm diameter are...

We have investigated the effects of grain size and orientation copper substrates for growth cupric oxide nanowires by thermal oxidation method. Long, less-roughness, high-density, aligned been synthesized heating (200) oriented foils with small in air gas. Long diameter around 80 nm can only be formed within a short temperature range from 400 to 700°C. On other hand, uniform, smooth-surface, were not case larger crystallite (111) orientation. Smaller foil is favorable highly aligned, smooth...