Buscar
Mostrando ítems 11-20 de 179
Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance
(Elsevier Science, 2020-01)
Halide perovskites have shown great potential in photocatalytic applications. In order to enhance the charge transportation efficiency, the chemical stability, and the light absorption ability, we anchored a lead-free ...
Communication—large electron-hole diffusion lengths in methylammonium lead triiodide perovskite films prepared by an electrochemical-chemical approach
(Electrochemical Society Inc., 2017-11)
Methylammonium lead triiodide (CH3NH3PbI3) perovskite films were generated by chemical conversion of PbO2 layers electrodeposited over NiO hole selective contact, by simple immersion in CH3NH3I isopropanol solution under ...
New ferromagnetic La3Co2TaO9 double perovskite: Structural and magnetic properties
(Elsevier Science, 2009-10)
The new double perovskite La3Co2TaO9 has been prepared by a solid-state procedure. The crystal and magnetic structures have been studied from X-ray powder diffraction (XRPD) and neutron powder diffraction (NPD) data. ...
Study of the reverse saturation current and series resistance of p-p-n perovskite solar cells using the single and double-diode models
(Academic Press Ltd - Elsevier Science Ltd, 2018-11)
The effects of the offset level and of the doping level in the perovskite layer upon both the reverse saturation current (J 0 ) and the series resistance (R s ) of p-p-n perovskite solar cells have been researched in this ...
Combining Thickness Reduction and Light Trapping for Potential Efficiency Improvements in Perovskite Solar Cells
(Wiley VCH Verlag, 2018-03)
In this contribution it is shown that the efficiency of perovskite solar cells based on CH3NH3PbI3 can be increased further by combining thickness reduction of the perovskite layer and light trapping. A physical model for ...
Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
(Wiley VCH Verlag, 2017-09)
With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different ...
Crystal Structure Features of CsPbBr3 Perovskite Prepared by Mechanochemical Synthesis
(American Chemical Society, 2020-03)
We present a mechanochemical procedure, with solvent-free, green-chemistry credentials, to grow all-inorganic CsPbBr3 perovskite. The crystal structure of this perovskite and its correlations with the physicochemical ...
Elucidation of the role of support in Rh/perovskite catalysts used in ethanol steam reforming reaction
(Elsevier Science, 2021-07-15)
Rh/perovskite catalysts were prepared and evaluated in ethanol steam reforming reaction. The samples were characterized by SBET, XRD, XPS, TPR, TG and SEM techniques. It could be possible to obtain perovskites supports ...
Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
(Pergamon-Elsevier Science Ltd, 2015-01)
Perovskite-type oxides of composition BaTi 0.9 Rh 0.1 O 3±δ were prepared following a new chemical route that avoids the formation of hydroxyl species and precipitation, and allows the homogeneous distribution of Rh in the ...
Towards High Throughput Texturing of Polymer Foils for Enhanced Light Trapping in Flexible Perovskite Solar Cells using Roll‐to‐roll Hot Embossing
(Wiley VCH Verlag, 2019-12)
A path to further increase the power conversion efficiency of perovskite solar cells is maximizing sunlight absorption by using patterned substrates with enhanced light trapping capabilities. However, to be competitive ...