Electrochromic Properties of Li- Doped NiO Films Prepared by RF Magnetron Sputtering
Source abstract
Abstract
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).
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Conducting polymers and applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan
Department of Electrical Engineering, Cheng Shiu University, Kaohsiung 833, Taiwan
Funding
Ministry of Science and Technology of the Republic of China, Taiwan
References (18)
Show source-provided references
1. Low-E glass building materials market development
2. Alesanco, Y., Viñuales, A., Rodriguez, J., and Tena-Zaera, R. (2018). All-in-One Gel-Based Electrochromic Devices: Strengths and Recent Developments. Materials, 11.10.3390/ma11030414 ↗
3. Electrochromic devices10.1016/j.jeurceramsoc.2005.03.162 ↗
4. High contrast ratio and fast-switching dual polymer electrochromic devices10.1021/cm9801237 ↗
5. Electrochromism, a possible change of color producible in dyes by an electric field10.1063/1.1731686 ↗
6. Improved electrochromic performances of NiO based thin films by lithium doping: From single layers to devices10.1016/j.electacta.2012.03.123 ↗
7. Electrical properties of Li-doped NiO films10.1016/j.jeurceramsoc.2009.05.041 ↗
8. The effects of UV-ozone treated ultra-thin Li2CO3-doped NiO film as the anode buffer layer on the electrical characteristics of organic light-emitting diodes10.1016/j.jallcom.2016.04.271 ↗
9. One-step synthesis of Li-doped NiO as high-performance anode material for lithium ion batteries10.1016/j.ceramint.2016.06.071 ↗
10. Valence band edge shifts and charge-transfer dynamics in Li-Doped NiO based p-type DSSCs10.1016/j.electacta.2015.12.026 ↗
11. Chang, J.Y., Chen, Y.C., Wang, C.M., Wang, W.N., Wen, C.-Y., and Lin, J.M. (2019). Electrochromic properties of lithium-doped tungsten oxide prepared by electron beam evaporation. Coatings, 9.10.3390/coatings9030191 ↗
12. Electrochemical intercalation of cations into an amorphous WO3 film and accompanying changes in mass and surface properties10.1016/0022-0728(94)03769-Y ↗
13. Electron spectroscopy: Applications for chemical analysis10.1021/ed081p1751 ↗
14. Chen, Y.C., Wen, C.Y., Wang, C.M., Ho, C.W., Lin, S.Y., and Chen, Y.L. (2016). Characterization of transition-metal oxide deposition on carbon electrodes for supercapacitor. Appl. Sci., 6.10.3390/app6120413 ↗
15. Intercalation in WO3 and WO3: Li films10.1016/j.ssi.2003.08.013 ↗
16. Thermoelectric properties of silver-doped n-type Bi2Te3-based material prepared by mechanical alloying and subsequent hot pressing10.1016/j.jallcom.2005.06.041 ↗
17. Polaron lattice in highly conducting polyaniline: Theoretical and optical studies10.1103/PhysRevLett.59.1464 ↗
18. Enhanced electrochromic performances and cycle stability of NiO-based thin films via Li-Ti co-doping prepared by sol-gel method10.1016/j.electacta.2015.10.154 ↗