Showing papers in "Optical Materials in 2020"

TL;DR: In this article, a device simulation of FASnI3-based solar cells is performed by using SCAPS to inspect their impact on device performance, including the effect of changing conduction band offset and valence band offset, doping concentration and thickness of electron transport layer and hole transport layer (HTL).

TL;DR: In this article, the effect of different kinds of electron transporting layer (ETL) materials on Ge-perovskite solar cell design is studied and investigated to enhance the conversion efficiency of perovsite devices.

TL;DR: In this paper, the crystalline structure and phase formation of Ag+doped TiO2 (Ag-TiO2) thin films were examined using XRD and it was revealed that the particles are spherical in shape with sizes around 23.8 and 11.6 nm respectively.

TL;DR: In this article, a new type of LaFeO3/BiOBr heterojunction photocatalysts with Z-scheme charge transfer mechanism was designed and fabricated.

TL;DR: In this article, a planar device structure of a light harvester was modeled and investigated using SCAPS 1D simulation software and the optimum power conversion efficiency (PCE) of 18.97% was obtained using 1D SCAPS simulation software.

TL;DR: In this paper, a novel idea for enhancing the properties of the CdO thin film onto the quartz substrate by doping CuO on the catalytic activity for degradation of 4-nitrophenol was presented.

TL;DR: In this article, the fabrication of TiO2 nanoparticles (TNPs) functionalized ZnO nanoflakes (ZNFs) and their outstanding detoxification ability towards the methylene blue (MB), rhodamine 6G (R6G) and Oxytetracycline (OTC) molecules solution in water TEM studies confirm the formation of 3D architecture of ZNO-TiO2 nanohybrids while high-resolution transmission electron microscopy assures the uniform functionalization of TNPs over ZNFs.

TL;DR: In this paper, an organic-inorganic perovskite formamidinium tin iodide (HC(NH2)2SnI3)-FASnI3-based solar cell was used as light absorbing layer in photovoltaics.

TL;DR: In this paper, the effects of different dopant concentrations (1, 2, 3, 4 and 5) on the characteristics of the as-prepared samples were systematically investigated using various techniques.

TL;DR: In this paper, the photocatalytic performance of ZnO composites sensitized by carbon quantum dots (CQDs) has been investigated under visible-light illumination.

TL;DR: In this paper, four new acceptor-donor-acceptor (A-D-A) type novel chromophores (Y1-Y4) have been designed with subphthalocyanine (SubPc) as a common donor and different benzene bridged end-capped 2-methylenemalononitrile (A1), 6-methylene-2-thioxo-1,3-thiazinan-4-one (A2), 2-(2-methylenes-3-oxo-2,3

TL;DR: In this article, a photonic crystal fiber (PCF) sensor composed of an indium tin oxide (ITO) coating on the outer surface based on surface plasmon resonance (SPR) is designed and investigated.

TL;DR: In this article, a broadband tunable terahertz metasurface absorber (MSA) is proposed, which is composed of a periodic array of complementary-wheel-shaped (CWS) graphene sheets and a lossy polyimide layer backed with a groundplane.

TL;DR: In this paper, a numerical modeling of methylammonium germanium tri-iodide-based perovskite solar cells using 1D-SCAPS simulation program is reported.

TL;DR: In this paper, the structure and optical properties of polyvinyl alcohol (PVA) and Ni nanocomposite films are investigated by a scanning electron microscope (SEM), X-ray diffractometer (XRD), and UV-Vis spectroscopy.

TL;DR: Pristine and neodymium-doped (3, 6, and 9 ¼ ) ZnO nanostructured thin films were deposited on glass substrates using the chemical bath technique as discussed by the authors.

TL;DR: In this paper, the effect of each method of preparation on the structural, morphological, and optical properties of MAPbI3 has been investigated, and it was shown that the quality of the film produced by two-step is much better than that formed via one-step.

TL;DR: In this paper, the phase transition, optical, and photoluminescence properties of CaWO4 nanophosphors with different phase purity were synthesized by a wet chemistry method.

TL;DR: In this paper, the effect of Triton X-100 (TX-100) surfactant usage in synthesis process was also studied, which led to a decrease in crystallite size to 14nm, increase of specific surface area to 116 m2/g and decrease of band gap energy to 1.75 eV.

TL;DR: In this article, both pure and doped polyvinyl alcohol (PVA) with 1 ¼ % of Fe2O3 or NiO nanoparticles (NPs) were prepared using casting method.

TL;DR: In this paper, the effect of variation of band gap and electronic defect energy levels within the band gap on nonlinear optical absorption of 532nm (green) laser light by coral-like yttrium aluminium-iron garnet (YAIG, Y3Al5-xFexO12) ceramics prepared by solution combustion route is investigated using Z-scan technique.

TL;DR: In this article, a smooth and effective protocol was proven to produce 2-amino-4-(2-hydroxy-3-methoxy-phenyl)-6-oxo-4H-thiazolo[3,2-a][1,3,5]triazine [2aTZ] via one-pot ternary condensation of easily available mercaptoacetic acid, o-vanillin and dicyandiamide along with ammonium acetate (CH3COONH4) as a catalyst.

TL;DR: In this paper, a novel organic, crystalline and conjugated semiconductor copolymer, the poly (4-nitroaniline-4-toluidine) [DPPNPT] was prepared by oxidative polymerization in acidic medium.

TL;DR: In this article, the effects of Na+/Sn2+ substituent using a solution-based method for improving characteristics and functions of Zn1-xNaxS/Zn 1-xSnxS (x = 0-15%) thin films for such applications.

TL;DR: In this article, a 2D/2D BiOCl/g-C3N4 nanosheet-like composite was prepared by hydrothermal method, which exhibited a remarkable photocatalytic efficiency and antimicrobial activity for tetracycline (TC).

TL;DR: In this article, transparent pristine and boron (B) doped zinc oxide (ZnO) thin films were synthesized by spray pyrolysis method and the crystalline structure, morphology and optical properties of the produced films were investigated with X-ray diffractometer (XRD), scanning electron microcopy (SEM) and Uv-vis spectrometer.

TL;DR: In this article, an overt hydrothermal approach for the synthesis of rGO-Bi2WO6 based catalyst, which were later probed with XRD, FTIR, PL, BET surface area, XPS, FE-SEM and HR-TEM for their structural, optical and morphological characteristics was explored to degrade levofloxacin, an antibiotic, using visible light at room temperature.

TL;DR: In this article, a carbon quantum dots (CQDs)/nanofibrillated cellulose (NFC) composite aerogel was used for the adsorption and detection of heavy metal ions (Cr3+) in water.

TL;DR: In this article, the authors have carried out simulation studies to explore a non-toxic and inorganic perovskite solar device utilizing Cs2AgBiBr6 as the active layer and Cu2O as the hole transport layer (HTL).