Preparation and characterization of F doped SnO2 films and electrochromic properties of FTO/NiO films

2009 ◽  
Vol 9 (1) ◽  
pp. 67-72 ◽  
Author(s):  
K.K. Purushothaman ◽  
M. Dhanashankar ◽  
G. Muralidharan
2010 ◽  
Vol 654-656 ◽  
pp. 1904-1907 ◽  
Author(s):  
Chih Ming Wang ◽  
Kuo Sheng Kao ◽  
Da Long Cheng ◽  
Chien Chuan Cheng ◽  
Po Tsung Hsieh ◽  
...  

Electrochromic properties of transition metal oxides had much attention in recent years. The electrochromic thin films can be assembly as electrochromic devices (ECDs) and then used for applications in devices such as mirrors, panels and smart windows. A kind of complementary ECD is popular in resent years. Therefore, a specific investigation on nickel oxide (NiO) electrochromic properties is completed in this study. The crystalline structure of the NiO films was analyzed using XRD (PANalytical X’Pert PRO) with Cu-Kα radiation. The atmosphere of oxygen concentration increasing has changed the NiO films crystalline from (200) to (111). The thicknesses and surface microstructures of the NiO films were investigated using a scanning electron microscope (SEM, Philips/FEI XL40 FEG). It is observed that films are relatively smooth deposited without oxygen. The characterization of the electrochromic properties was carried out in a two-electrode cell with an electrochemical analyzer (CHI 611B). The NiOx changes the transmittance of NiO films in the wavelength range of 300-1500 nm and the color of the film changes from transparent to brown. The nano-crack exhibits in the NiO film did enhance the electrochromic properties.


2008 ◽  
Vol 8 (5) ◽  
pp. 2703-2706 ◽  
Author(s):  
J. R. Vargas Garcia ◽  
E. M. Lazcano Ugalde ◽  
F. Hernandez Santiago ◽  
J. M. Hallen Lopez

The influence of the deposition conditions on the structural features and electrochromic properties of nickel oxide (NiO) films prepared by chemical vapor deposition has been investigated. NiO films have been prepared on fluorine doped tin oxide (FTO) coated glass substrates from nickel-acetylacetonate precursor and their electrochromic properties have been studied by cyclic voltammetry in a 0.1 M KOH solution at room temperature. Films exhibiting only the NiO phase were obtained at deposition temperatures higher than 450 °C in a wide range of reactor pressures (0.13 to 66.6 kPa). Particularly, NiO films prepared at 500–550 °C from 0.13 to 53.3 kPa are transparent in nature and exhibit a crystallite size varying from 10 to 60 nm. An appreciable anodic electrochromic change from transparent to black coloured resulted from a very porous surface morphology and film thickness of about 3.5 μm. The electrochromic change was maintained over 3000 switching cycles. Nanostructured 3.5 μm-thick NiO films showed a maximum difference in optical transmittance of about 40% in the near-infrared region. These results make the nanostructured NiO films comparables with those prepared by other deposition techniques.


2020 ◽  
Vol 109 ◽  
pp. 110280
Author(s):  
Shiqi Jin ◽  
Shangsheng Wen ◽  
Muyun Li ◽  
Huien Zhong ◽  
Yanwei Chen ◽  
...  

2021 ◽  
Vol 367 ◽  
pp. 137457
Author(s):  
Yingming Zhao ◽  
Xiang Zhang ◽  
Xi Chen ◽  
Wenjie Li ◽  
Lebin Wang ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21252-21264 ◽  
Author(s):  
Yan Zhang ◽  
Lingqian Kong ◽  
Xiuping Ju ◽  
Hongmei Du ◽  
Jinsheng Zhao ◽  
...  

Two novel neutral green D–A type conjugated polymers were synthesized, illustrating satisfactory electrochromic properties, such as low band gaps, desirable color switches, excellent solubility and favorable thermal stability.


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