Results 31 to 40 of about 31,227 (312)

Síntese seletiva da metil vinil cetona usando catalisadores nanoparticulados de SnO2 e MgO [PDF]

open access: yes, 2004
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em QuímicaNeste projeto, foi estudada a influência do método de obtenção nas propriedades catalíticas das amostras a base
Fajardo, Humberto Vieira
core  

All‐Solution‐Processed HgTe Quantum Dot Photodetectors for Extended Short‐Wavelength Infrared Range Enhanced by Plasmonic ITO Nanocrystals

open access: yesAdvanced Functional Materials, EarlyView.
All‐solution‐processed, low‐cost extended short‐wavelength infrared photodetectors are realized by coupling colloidal HgTe quantum dots to plasmonic In2O3:Sn,F nanocrystals. Localized surface plasmon resonances boost and spectrally tailor light absorption between 1500 and 3000 nm, enabling responsivities above 40 A W−1.
Kseniia A. Sergeeva   +9 more
wiley   +1 more source

Electrochemical Properties of Hollow, Spherical Li2O-SnO2-Cu-C Nanocomposite Powders Prepared by Spray Pyrolysis

open access: yesInternational Journal of Electrochemical Science, 2013
Hollow and spherical Li2O-SnO2-Cu-C nanocomposite powder is prepared by spray pyrolysis. Examination of the nanocomposite powder shows that Li2O-SnO2-Cu particles are uniformly distributed over a hollow C matrix.
Yong Seung Jang   +3 more
doaj   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Improvement of H2S Sensing Properties of SnO2-Based Thick Film Gas Sensors Promoted with MoO3 and NiO

open access: yesSensors, 2013
The effects of the SnO2 pore size and metal oxide promoters on the sensing properties of SnO2-based thick film gas sensors were investigated to improve the detection of very low H2S concentrations (
In Sung Son   +7 more
doaj   +1 more source

Facile synthesis of SnO2/graphene and Bi–SnO2/graphene-based nanocomposites as electrode materials for energy storage devices

open access: yesResults in Engineering, 2023
Graphene-based nanocomposites are widely investigated as cathode materials for energy storage device. Herein, tin oxide-modified graphene (SnO2/G) and bismuth-doped SnO2/G (Bi–SnO2/G) nanocomposites with nanorod-like morphology were synthesized by the ...
Muhammad Kaleem Shabbir   +9 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Effects of Sol Concentration on the Structural and Optical Properties of SnO2 Nanoparticle [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2018
In this paper, the effects of changes in Sol concentration on the structural and optical properties of SnO2 Nanoparticles are studied through the Sol-Gel method.
Alireza Razeghizadeh   +3 more
doaj  

Effect of Mn-substituted SnO2 particle toward photocatalytic degradation of methylene blue dye

open access: yesResults in Physics, 2017
SnO2 and Mn-doped SnO2 were successfully prepared by wet chemical synthetic route. The understanding of substituted Mn into SnO2 leads to transfer the energy band gap by small amount of metal dopant.
L. Sakwises   +3 more
doaj   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal   +9 more
wiley   +1 more source

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