Study on the optical properties and electrochromic applications of LTO/TaOx ion storage-transport composite structure films

Wang, Ding; Wang, Xiaoqiang; Li, Mingya; Hou, Junfei; Zhang, Renfu

doi:10.1007/s11581-018-2557-8

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…According to the experimental data and the calculation formulation ( d is the thickness of the film, R is the impedance value at the highest frequency, and S is the area of the film), we can get the ionic conductivity of the Al 1.98 SiO 9.79 film of about 6.25 × 10 –8 S·cm –1 . In Tables S4 and S5, we have summarized and compared the ionic conductivities of Li + -based polymer gel electrolytes ,− and inorganic solid electrolytes and the electrochromic performance of ECDs based on them has also been compared. ,− From the above table, we can tell that generally, the polymer gel electrolytes (PGEs) possess an ionic conductivity 2 or 3 orders of magnitude larger than that of the solid electrolytes. However, after being assembled into devices, the corresponding PGE-based electrochromic performance of ECDs does not show absolute superiority over inorganic solid ECDs.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance

Zhu

Xie

Chang

et al. 2020

ACS Appl. Electron. Mater.

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In the electrochromic devices (ECDs), the commonly employed active ions are monovalent ions, such as Li + , for the advantages of small ionic radius and high ion transportation. However, monovalent ions still show several disadvantages, including poor chemical stability, expensive costs, difficult waste disposal, and so on. Here, we proposed a synergistic Al 3+ /Li + all-solid-state electrochromic device prepared by magnetron sputtering, which extracts the essence of trivalent ion Al 3+ and monovalent ion Li + and remove their dross. It has been demonstrated that the introduction of Li + ions can activate the Al 3+ ions in the solid electrolyte, and both Al 3+ and Li + ions can induce the electrochromic reaction in the all-solid-state ECDs. The synergistic effect of Al 3+ /Li + can promote the performance of ECDs, which includes high optical contrast of 56%, fast coloration time of 9.73 s and bleaching time of 2.98 s, and relatively high coloration efficiency of 62.81 cm 2 •C −1 . Our findings are expected to provide a novel strategy for the utilization of trivalent ions in all-solid-state electrochromic devices.

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Section: Resultsmentioning

confidence: 99%

Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance

Zhu

Xie

Chang

et al. 2020

ACS Appl. Electron. Mater.

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“…Interference fringes in transmission spectra occur because the incident light moves between two interfaces (air-coating, coating-substrate), producing different reflected and transmitted waves that constructively or destructively interfere within the samples. The presence of these interference fringes indicates that the coatings have optically smooth surfaces, both with the air and with the substrate, and very good thickness homogeneity [35][36][37]. The deposited coating of 50Ta2O5-50ZnO has lower transmittance as well as a small number of fringes.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

Hydrophobic and Transparent Tantalum Pentoxide-Based Coatings for Photovoltaic (PV) Solar Panels

Mocioiu,

Atkinson,

Aricov

et al. 2024

Coatings

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Photovoltaic (PV) solar panels suffer from efficiency losses due to the accumulation of dust on their surface during operation, as well as the loss of transparency in the top glass. The efficiency can be increased when hydrophobic films are deposited on the top glass of the solar cells. The top glass of solar cells must have three characteristics: high transmittance in the 380–750 nm range, a band gap greater than 3.2 eV and a refractive index higher than 1.23. So, the films require the same characteristics. This work presents an increase in the contact angle (related to an increase in the hydrophobic character) when Ta2O5 is partially substituted with ZnO. The studied films, physically deposited on glass by e-gun technology, present a non-crystalline state in the form of the X-ray patterns shown. The films have a transmission of 75%–80% in the visible range. The morphology and roughness of the coatings were evaluated by atomic force microscopy. All films show the values of the Millipore water contact angle higher than 91 degrees, leading to the acquisition of hydrophobic properties on the surface. In comparison, the substrate is hydrophilic, with an average contact angle of 53.81 ± 2.16. The hydrophobic properties and self-cleaning ability make the films recommendable for application. The band gap of the coatings was calculated with the Tauc method, and they have values of 4.5–4.6 eV.

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“…This is an indication of good colouration depth and a way forward for energy saving devices. In the matter of response time, the all-solid-state ECD based on composite LTO/Ta 2 O 5 film displayed 14 s and 13 s, respectively, for colouring and bleaching time at a sweeping voltage of ±3 V [55].…”

Section: Ta 2 O 5 Based Spe Ecdmentioning

confidence: 99%

Towards an All-Solid-State Electrochromic Device: A Review of Solid-State Electrolytes and the Way Forward

Chan

2022

Polymers

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In order to curb high electricity usage, especially in commercial buildings, smart windows, also known as “switchable” or “smart” glasses, have attracted a significant amount of attention in an effort to achieve energy savings in eco-friendly buildings and transportation systems. Smart windows save energy by regulating the input of solar heat and light and hence cutting down air-conditioning expenses, while maintaining indoor comfort. This is achieved by electrochromism, which is defined as the reversible colour change in electrochromic (EC) materials from transparent to dark blue and vice versa under a small applied voltage. Recent state-of-the-art electrochromic devices (ECD) adopt liquid-based electrolytes as the main source of energy for basic operations. While this has resulted in much success in ECDs as reported in past studies, there remain several drawbacks to this aspect, such as liquid electrolyte leakage and evaporation, not to mention safety concerns related to the harmful nature of electrolyte materials. This paper aims to review the recent advances in various solid electrolytes that are potential solutions to the mentioned problems.

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Study on the optical properties and electrochromic applications of LTO/TaOx ion storage-transport composite structure films

Cited by 8 publications

References 35 publications

Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance

Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance

Hydrophobic and Transparent Tantalum Pentoxide-Based Coatings for Photovoltaic (PV) Solar Panels

Towards an All-Solid-State Electrochromic Device: A Review of Solid-State Electrolytes and the Way Forward

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Study on the optical properties and electrochromic applications of LTO/TaOx ion storage-transport composite structure films

Cited by 8 publications

References 35 publications

Synergistic Effect of Al3+/Li+-Based All-Solid-State Electrochromic Devices with Robust Performance

Synergistic Effect of Al3+/Li+-Based All-Solid-State Electrochromic Devices with Robust Performance

Hydrophobic and Transparent Tantalum Pentoxide-Based Coatings for Photovoltaic (PV) Solar Panels

Towards an All-Solid-State Electrochromic Device: A Review of Solid-State Electrolytes and the Way Forward

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Product

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Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance

Synergistic Effect of Al³⁺/Li⁺-Based All-Solid-State Electrochromic Devices with Robust Performance