Symmetric naphthalenediimidequaterthiophenes for electropolymerized electrochromic thin films

2015 ◽  
Vol 3 (23) ◽  
pp. 5985-5994 ◽  
Author(s):  
V. Figà ◽  
C. Chiappara ◽  
F. Ferrante ◽  
M. P. Casaletto ◽  
F. Principato ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Properties ◽  
Electrochromic Devices ◽  
Coloration Efficiency ◽  
Physico Chemical ◽  
Donor Acceptor

Novel electropolymerized copolymers with a controlled donor/acceptor ratio obtained from symmetric naphthalenediimidequaterthiophene showed prominent physico-chemical properties and high coloration efficiency in electrochromic devices.

Oxide thin film properties

2021 ◽  
pp. 84-126
Author(s):  
Falko P. Netzer ◽  
Claudine Noguera
Keyword(s):  
Thin Films ◽  
Chemical Reactivity ◽  
Finite Thickness ◽  
Chemical Properties ◽  
Local Environment ◽  
Oxide Thin Film ◽  
Special Focus ◽  
Physico Chemical ◽  
Oxide Substrates ◽  
Interfacial Dislocations

Chapter 4 focuses on the various physico-chemical properties of thin films, and in particular on their thickness dependence. It aims at bridging the gap between the well established knowledge acquired on oxide surfaces and truely two-dimensional oxides. It reviews the consequences of the reduced local environment of their atoms and of the confinement effects due to their finite thickness. It analyzes the various manifestations of structural, electronic, vibrational, ferroelectric and magnetic modifications. A special focus is put on the interaction of thin films with metal or oxide substrates, possibly leading to interfacial dislocations, electron transfer or mixing, with consequences on their chemical reactivity.

Physico-chemical properties of photo-CVD silicon nitride thin films

1988 ◽  
Vol 165 (1) ◽  
pp. 279-290 ◽  
Author(s):  
M. Berti ◽  
M. Meliga ◽  
G. Rovai ◽  
S. Stano ◽  
S. Tamagno
Keyword(s):  
Thin Films ◽  
Silicon Nitride ◽  
Chemical Properties ◽  
Physico Chemical

scholarly journals PHYSICO-CHEMICAL PROPERTIES OF ELECTROCHROMIC COMPLEX TUNGSTEN OXIDES

2021 ◽  
pp. 421-429
Author(s):  
Борис Магометович Хуболов
Keyword(s):  
Electronic Structure ◽  
Condensed System ◽  
Tungsten Bronze ◽  
Chemical Properties ◽  
Electrochromic Devices ◽  
Strong Electron ◽  
Tungsten Oxides ◽  
Physico Chemical ◽  
Starting Point ◽  
Condensed Systems

Приведён краткий обзор проблемы электрохромизма в неупорядоченных тонких пленках сложных оксидов вольфрама на основе экспериментальных результатов, опубликованных ранее. Рассмотрены проблемы ионно-электронного упорядочения в сложных оксидах вольфрама MWO ( M = Na, K и x = 0,3), их взаимосвязь с динамикой процесса электрохромного окрашивания в этих конденсированных системах. Рассмотрены возможные пути решения обозначенных проблем. Отправной точкой нашего похода к исследованию электрохромизма и разработки физических основ технологии электрохромных устройств явился отказ от общепринятого электрохимического рассмотрения этого явления. Мы убеждены в том, что электрохромный эффект является чисто твердотельным эффектом, происходящим в конденсированной системе с сильной электронной корреляцией. Электронная структура твердого тела, имеющаяся на границе раздела твердое тело-электролит в значительной степени, управляет характером и скоростью реакций, которые протекают на его поверхности. В случае окислов роль, которую играет электронная структура особенно сложна. Все изложенное указывает на необходимость рассмотрения влияния глубоких уровней в объеме оксидной вольфрамовой бронзы и на ее поверхности, граничащей с электролитом на процесс электрохромного окрашивания. A brief review of the problem of electrochromism in disordered thin films of complex tungsten oxides is given on the basis of experimental results published earlier. The problems of the ion-electron ordering in complex tungsten oxides MWO (M = Na or K and x = 0,3) are regarded as well as their relationship with the dynamics of the process of electrochromic coloring in these condensed systems. Possible ways of solving the indicated problems are considered. The starting point of our campaign to study the electrochromism and to develop the physical grounds of the technology of electrochromic devices was the rejection of the generally accepted electrochemical consideration of this phenomenon. We are convinced that the electrochromic effect is a purely solid-state one occurring in a condensed system with a strong electron correlation. The electronic structure of a solid at the solid-electrolyte interface largely controls the nature and rate of reactions that take place on its surface. In the case of oxides, the role played by the electronic structure is particularly complex. All of the above indicates the need to consider the effect of deep levels in the bulk of the oxide tungsten bronze and on its surface, bordering the electrolyte, on the process of electrochromic coloring.

Influence of growth temperature on the physico-chemical properties of sprayed cadmium oxide thin films

2015 ◽  
Vol 41 (3) ◽  
pp. 4867-4873 ◽  
Author(s):  
S.P. Desai ◽  
M.P. Suryawanshi ◽  
S.M. Bhosale ◽  
J.H. Kim ◽  
A.V. Moholkar
Keyword(s):  
Thin Films ◽  
Growth Temperature ◽  
Cadmium Oxide ◽  
Chemical Properties ◽  
Oxide Thin Films ◽  
Physico Chemical
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