Relevant bibliographies by topics / Electrochromic, sol-gel, tungsten oxide

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Academic literature on the topic 'Electrochromic, sol-gel, tungsten oxide'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Dissertations / Theses on the topic "Electrochromic, sol-gel, tungsten oxide"

1

Isik, Dilek. "Sol-gel Derived Tungsten Oxide Based Electrochromic Coatings." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609686/index.pdf.

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The microstructural, electrochemical and optical properties of sol-gel derived tungsten oxide electrochromic coatings have been investigated. Coatings were formed by spinning of tungsten metal based aqueous sol on glass with native ITO layer. Three sol formulations<br>acetylated peroxotungstic acid (APTA), peroxotungstic acid (PTA) and titanium-doped peroxotungstic acid (Ti-PTA) were employed to obtain 200-300 nm thick multi-layered coatings. Material and electrochromic characterization of the coatings have been performed by DSC, XRD, SEM, cyclic voltammetry and UV-Vis spectroscopy. The electr
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2

Taylor, Douglas John. "Structure and properties of laser-fired, sol-gel derived tungsten oxide films." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187173.

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This investigation focuses on the use of laser radiation to fire sol-gel derived oxide films. The main emphasis of this work was to make high quality tungsten oxide films with good electrochromic properties. Laser firing was done with a carbon dioxide laser operated in continuous mode. The laser-fired tungsten oxide films were measured for density, composition, crystallinity and electrochromic behavior. Analytical tools included multi-angle ellipsometry, FTIR, TEM, XRD, spectrophotometry and electrochemistry. The effect of process variables (laser power, spot size and translation speed) on the
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3

Moura, Diego Soares de. "Obtenção de filmes de óxido de tungstênio tendo como agente estruturante o surfactante catiônico cloreto de dodeciltrimetilamônio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108370.

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Neste trabalho foram obtidos filmes de óxido de tungstênio pelo método sol-gel modificado, tendo como precursor o tungstato de sódio dihidratado (Na2WO4.2H2O) e como agente estruturante o surfactante cloreto de dodeciltrimetilamônio (DTAC). O comportamento dos sistemas em meio aquoso foi avaliado por medidas de pH, condutividade e viscosidade. Foram avaliadas duas metodologias de obtenção dos filmes de óxido de tungstênio: a primeira consistiu na obtenção de filmes de tungstato de sódio, através de sistemas contendo 10 mmol.L-1 de Na2WO4.2H2O em diferentes concentrações de DTAC, por casting, e
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4

Yin, Zhewen. "Non-precious Metal Catalysts for Oxygen Reduction Reaction in Alkaline Solutions." Scholar Commons, 2018. http://scholarcommons.usf.edu/etd/7250.

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Mesoporous WO3 powders were prepared via sol-gel processing synthesis using nonionic surfactant Pluronic (P-123) as the template. The influences of heating temperature on the pore structure and properties of WO3 powders were investigated. Three kinds of modifications were compared and evaluated after finding out the best heating condition. Different amount of lanthanum was doped into mesoporous WO3 to improve its Oxygen Reduction Reaction (ORR) activity. Several factors contributing to the increase of catalytic performance were discussed. Vulcan carbon powder was also used as a support to incr
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5

Zrikem, Khawla. "Influence du traitement UV et du dopage au lithium sur les propriétés électrochromes de couches minces d'oxyde de nickel préparées par sol-gel." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0072.

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L'oxyde de nickel est l'un des matériaux électrochromes les plus utilisés dans le domainedes fenêtres intelligentes qui contrôlent la lumière et la chaleur provenant de l'extérieur versl'intérieur des bâtiments. Il est important de mentionner que l’oxyde de nickelstoechiométrique est un isolant à température ambiante. Les propriétés microstructurales,chimiques, optiques et électrochromes des couches minces dépendent fortement du procédéde préparation et traitement final. En outre, l’un des principaux défis consiste à fabriquer lescouches minces sur des substrats souples afin de fabriquer des f
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6

Chen, Rei-Lin, and 陳瑞琳. "Preparing Electrochromic material Tungsten Oxide by Sol-Gel method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/64645832319371835409.

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碩士<br>逢甲大學<br>化學工程學所<br>92<br>Electrochromism is currently attracting more attentions from the academia and industries. There are many commercial applications for the electrochromic devices, such as sunroof window in a car, smart windows in order to balance the lighting in a house, antiglare mirror and electrochromic displays. Electrochromic materials include two types that are inorganic and organic ones. Especially for the inorganic type it can tolerate the dramatic environmentally changes, the typical materials are ITO, WO3 and NiOx, etc. The WO3 is the most investigated inorganic material,
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7

fu-sheng, Hsieh, and 謝福昇. "Fabrication of tungsten oxide electrochromic thin film by combing sol-gel and precision screen-printing technology." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/91974091598883350323.

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碩士<br>國立臺灣師範大學<br>機電科技研究所<br>99<br>This study combines sol-gel method and screen-printing technology to fabricate tungsten oxide film which applied to electrochromic element.My study can be divided into three parts.First is fabricating APTA powder and then measure its properties.The APTA powder has exothermic peak at 430℃ by DSC analysis.We learned that exothermic peak is caused crystallization behaviors from WO3 film by XRD analysis.WO3 film is amorphous phase when temperature is lower than 250℃,then turns into monoclinc phase at 450℃. Secondly, a sol–gel derived APTA solution encompassing
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8

Ching-LinWu and 吳京霖. "Synthesis of Electrochromic Tungsten Oxide Nanostructured Films by Sol-gel Method and its Application to Thermal Shielding." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/35288905008657137909.

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博士<br>國立成功大學<br>材料科學及工程學系<br>102<br>Electrochromic device have the ability to change the transmittance to block the solar radiation by controlling the applied voltage and have the application for energy-saving windows. State-of-the art, the challenges of the device are nanostructured electrodes and large-scale fabricating. In this research, porous tungsten oxide is synthesized by the surfactant-assisted sol-gel method. Porous structure, crystallinity, and composition can be modified by the concentration of surfactant, annealing temperature, and curing condition. The effects of different morpho
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9

YE, QI-ZHI, and 葉其致. "Preparation of Gel Electrolyte for the Tungsten Oxide-based Electrochromic Devices." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/14188061530111179037.

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碩士<br>國立臺南大學<br>材料科學系碩士班<br>105<br>With the increasing concern on environmental protection issues, many researchers devoted to the study of energy saving., including the development of electrochromic devices. Many materials can be used in the electrochromic devices, and many studies have been focused on the morphology and electrochemical characteristics of the electrochromic material. Since the electrochromic devices are composed of multiple layers, the function of the electrolyte also affects the performance of electrochromic devices. In this study we will focus on the effect of gel electroly
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10

Li, Ming Cong, and 李明聰. "Synthesis of Mesoporous Tungsten Oxide by Sol-gel Method." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/33204086395658895278.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>95<br>Nanomaterials have unique properties in comparison with powder materials. Mesostructured materials with tailored pore structures and high surface areas in order to improve sensitivity have gathered increasing attention in recent years. In this study, mesoporous WO3 was prepared by sol-gel process and the synthesis was accomplished by using block copolymer as the template, and tungsten chloride as the inorganic precursor. We investigated the effects of synthesis variables on the structure of mesoporous WO3, such as the concentration of triblock copolymer, hydro
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