scholarly journals Mixed Nanostructured Ti-W Oxides Films for Efficient Electrochromic Windows

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Nguyen Nang Dinh ◽  
Dang Hai Ninh ◽  
Tran Thi Thao ◽  
Truong Vo-Van

With the aim to enhance the electrochromic (EC) efficiency and electrochemical stability of electrochromic devices (ECD), mixed nanostructured TiO2/WO3films were prepared by an electrochemical deposition method with the purpose of adding WO3nanoparticles to porous nanocrystalline doctor-blade TiO2(nc-TiO2) films. The results of the characterization of electrochromic properties in 1 M LiClO4+ propylene carbonate (LiClO4+ PC) of both the nc-TiO2/F-doped tin oxide (FTO) and WO3/TiO2/FTO configurations showed the reversible coloration and bleaching of the ECDs. The response time of the ECD coloration of WO3/TiO2/FTO was found to be as small as 2 sec, and its coloration efficiency (CE) as high as 35.7 cm2× C−1. By inserting WO3nanoparticles into the porous TiO2structures, WO3/TiO2heterojunctions were formed in the films, consequently enabling both the CE and electrochemical stability of the working electrodes to be considerably enhanced. Since a large-area WO3/TiO2can be prepared by the doctor-blade technique followed by the electrochemical deposition process, mixed nanostructured Ti-W oxides electrodes constitute a good candidate for smart window applications, taking advantage of the excellent coloration and stability properties as well as the simple and economical fabrication process involved.

Author(s):  
Chan Yang Jeong ◽  
Takashi Kubota ◽  
Kazuki Tajima ◽  
Masakazu Kitamura ◽  
Hideaki Imai

2019 ◽  
Vol 7 (7) ◽  
pp. 1966-1973 ◽  
Author(s):  
Yanan Wang ◽  
Zhaohui Meng ◽  
Hou Chen ◽  
Teng Li ◽  
Dajiang Zheng ◽  
...  

Uniform and lamellar-porous WO3 films were successfully prepared on a flexible Ag nanofiber (Ag NF) network film via a pulsed electrochemical deposition method for highly flexible electrochromic devices.


2020 ◽  
Vol 8 (26) ◽  
pp. 8747-8754
Author(s):  
Hyun Joo Lee ◽  
Chanyong Lee ◽  
Juhee Song ◽  
Yong Ju Yun ◽  
Yongseok Jun ◽  
...  

Electrochromic devices (ECDs) have been widely investigated for application in next-generation displays and smart windows owing to their highly efficient optical transmittance modulation properties.


Author(s):  
Mustaqim Siddi Que Iskhandar ◽  
Huanping Luo ◽  
Krishna Ananda Ekaputera ◽  
Basim Al-Qargholi ◽  
Muhammad Mohsin Khan ◽  
...  

2010 ◽  
Vol 114 (3) ◽  
pp. 1424-1429 ◽  
Author(s):  
Dunlin Qu ◽  
Fangyan Xie ◽  
Hui Meng ◽  
Li Gong ◽  
Weihong Zhang ◽  
...  

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1246
Author(s):  
Nwanna Charles Emeka ◽  
Patrick Ehi Imoisili ◽  
Tien-Chien Jen

Niobium oxides (NbO, NbO2, Nb2O5), being a versatile material has achieved tremendous popularity to be used in a number of applications because of its outstanding electrical, mechanical, chemical, and magnetic properties. NbxOy films possess a direct band gap within the ranges of 3.2–4.0 eV, with these films having utility in different applications which include; optical systems, stainless steel, ceramics, solar cells, electrochromic devices, capacitor dielectrics, catalysts, sensors, and architectural requirements. With the purpose of fulfilling the requirements of a vast variety of the named applications, thin films having comprehensive properties span described by film composition, morphology, structural properties, and thickness are needed. The theory, alongside the research status of the different fabrication techniques of NbxOy thin films are reported in this work. The impact of fabrication procedures on the thin film characteristics which include; film thickness, surface quality, optical properties, interface properties, film growth, and crystal phase is explored with emphases on the distinct deposition process applied, are also described and discussed.


2019 ◽  
Vol 7 (41) ◽  
pp. 12761-12789 ◽  
Author(s):  
Xuefei Li ◽  
Kuluni Perera ◽  
Jiazhi He ◽  
Aristide Gumyusenge ◽  
Jianguo Mei

This review describes figures of merit, challenges and strategies during the development of solution-processable electrochromic materials and devices for large-area smart window applications.


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