NiO films prepared by e-beam evaporation for Mg2+ based electrochromic devices

2022 ◽  
Vol 124 ◽  
pp. 111959
Xi Chen ◽  
Yingming Zhao ◽  
Wenjie Li ◽  
Lebin Wang ◽  
Junying Xue ◽  
Coatings ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 87 ◽  
Jui-Yang Chang ◽  
Ying-Chung Chen ◽  
Chih-Ming Wang ◽  
You-Wei Chen

In this study: various amounts of Li2CO3 powders were mixed into NiO powders to fabricate the Li- added NiO (NiO:Li) targets. The electrochromic films of LiNiO were deposited on ITO glasses at room temperature (R.T.) by RF magnetron sputtering. The thicknesses of electrochromic LiNiO films were kept about 200 nm. The ECD device was constructed with structure of Glass/ITO/ LiNiO /Gel-electrolyte/ITO/Glass. The results indicated that the optimal electrochromic characteristics of Li0.16Ni0.58O thin films could be obtained by 10 wt% Li2CO3 added NiO target. The optimized characteristics of ECDs could be achieved with the intercalation charge (Q) of 11.93 mC/cm2, the optical density (ΔOD) of 0.38, the transmittance change (ΔT) of 44.1%, and the coloring efficiency (η) of 31.8 cm2/C at the wavelength of 550 nm by setting voltage of 3.2V. The results demonstrate that the doping of Li+ ions into NiO films can effectively enhance the characteristics of ECD devices. The reason may due to the increased amount of charge stored in the electrochromic devices (ECDs).

2010 ◽  
Vol 654-656 ◽  
pp. 1904-1907 ◽  
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.

2016 ◽  
Vol 60 (1) ◽  
pp. 3-12 ◽  
Ding Zhou ◽  
Dong Xie ◽  
Xinhui Xia ◽  
Xiuli Wang ◽  
Changdong Gu ◽  

2004 ◽  
Vol 9 (4) ◽  
pp. 363-372 ◽  
T. Lukaszewicz ◽  
A. Ravinski ◽  
I. Makoed

A new multilayer electrochromic device has been constructed according to the following pattern: glass1/ITO/WO3/gel electrolyte/BP/ITO/glass2, where ITO is a transparent conducting film made of indium and tin oxide and with the surface resistance equal 8–10 Ω/cm2 . The electrochromic devices obtained in the research are characterized by great (considerable) transmittance variation between coloration and bleaching state (25–40% at applied voltage of 1.5 to 3 V), and also high coloration efficiency (above 100 cm2 /C). Selfconsistent energy bands, dielectric permittivity and optical parameters are calculated using a full-potential linear muffin-tin orbital method. The numerical solution of the Debye-Smoluchowski equations is developed for simulating recombination probability of Li+ ions in amorphous electrolyte.

2011 ◽  
Vol 19 (4) ◽  
pp. 341
Joel Díaz Reyes ◽  
Aarón Pérez-Benítez ◽  
Valentín Dorantes

<span>Tungsten(VI) oxide can be easily synthesized starting from a standard light bulb. The reaction consists in the oxidation at high temperatures (T ≈ 2000 – 3000° C) of a tungsten filament in presence of air; conditions which can be easily achieved by connecting a broken light bulb (but with its intact filament) to an AC-power supply of 110 volts. The vapor of WO3 is condensed into a beaker in a quantity enough to be characterized by infrared spectroscopy. The experiment is very funny, inexpensive and allows to the teacher to link several topics in current chemistry and physics of the tungsten oxides, such as their nomenclature and technological applications (i.e. electrochromic devices, gasochromic sensors, superalloys or as it is used in home: As a “simple” emisor of light!).</span>

Sung-Ik Park ◽  
Ying-Jun Quan ◽  
Se-Heon Kim ◽  
Hyungsub Kim ◽  
Sooyeun Kim ◽  

2021 ◽  
Vol 103 (14) ◽  
Geert R. Hoogeboom ◽  
Geert-Jan N. Sint Nicolaas ◽  
Andreas Alexander ◽  
Olga Kuschel ◽  
Joachim Wollschläger ◽  

2021 ◽  
Vol 223 ◽  
pp. 110960
Chi-Ming Chang ◽  
Ya-Chen Chiang ◽  
Ming-Hsiang Cheng ◽  
Shiuan-Huei Lin ◽  
Wen-Bin Jian ◽  

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
María Taeño ◽  
David Maestre ◽  
Ana Cremades

Abstract Nickel oxide (NiO) is one of the very few p-type semiconducting oxides, the study of which is gaining increasing attention in recent years due to its potential applicability in many emerging fields of technological research. Actually, a growing number of scientific works focus on NiO-based electrochromic devices, high-frequency spintronics, fuel cell electrodes, supercapacitors, photocatalyst, chemical/gas sensors, or magnetic devices, among others. However, less has been done so far in the development of NiO-based optical devices, a field in which this versatile transition metal oxide still lags in performance despite its potential applicability. This review could contribute with novelty and new forefront insights on NiO micro and nanostructures with promising applicability in optical and optoelectronic devices. As some examples, NiO lighting devices, optical microresonators, waveguides, optical limiters, and neuromorphic applications are reviewed and analyzed in this work. These emerging functionalities, together with some other recent developments based on NiO micro and nanostructures, can open a new field of research based on this p-type material which still remains scarcely explored from an optical perspective, and would pave the way to future research and scientific advances.

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