Fabrication of anthocyanin-sensitized nanocrystalline titanium dioxide solar cells using supercritical carbon dioxide

Liao, Shen‐Kung; Chang, Y . H.; Wu, Chung-Tse Michael; Lai, Yan-Rong; Chen, Wei-Yu

doi:10.1016/j.jcou.2017.07.006

Cited by 4 publications

(6 citation statements)

References 16 publications

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“…In general, when working with anthocyanins, alcoholic solvents are used [23,35,[49][50][51][52][53][54]. For example, anthocyanin extracts from five fruits were studied by Teoli and coworkers [54].…”

Section: Flavonoidsmentioning

confidence: 99%

“…The dye must have at least one functional group that helps the dye molecules to attach on the surface of the semiconductor, so the chemical structure of natural dyes ( [7,16]) must be considered. Anthocyanin's basic structure has -OH groups favoring bonding to TiO 2 [53]. Betalains have also anchor groups, such as carboxyl (-COOH), capable of binding to the atoms of the semiconductor.…”

Section: How the Dye Solution Adsorbs Onto Semiconductor Dssc Filmmentioning

confidence: 99%

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Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

García-Salinas

Ariza

2019

Applied Sciences

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We present a study about the sensitizers extracted from natural resources. This paper focuses on how to select, extract and characterize natural dyes, giving some guides to establish a protocol for the whole process of fabricating and using these dyes. The influence of the extraction solvent and method, and of parameters such as pH are analyzed. Also, dye precursor and dye extract stability have been studied, as well as how the dye adsorbs onto substrates and the effect of mixing or concentrating the extracts. Results concerning betalain pigments present in bougainvillea and beetroot extracts, and anthocyanins in eggplant extracts, analyzed by using UV-Vis spectrometry, are included. As an example of application, we report procedures intended to test and enhance the dye potential as a main component of dye-sensitized solar cells (DSSCs). DSSCs mimic nature’s photosynthesis and have some advantages like an easy and low-cost fabrication procedure. Their efficiency depends on its design and fabrication process and also on the different components involved. Hence, optimizing each component is essential to achieve the best performance, and thus the dye used as a sensitizer is crucial. We fabricate cells by using a simple procedure: As the interest is focused on the sensitizer, the same consecutive steps are followed, varying only the dye extract. Among all the natural-dyes tested, beetroot extract reaches up to 0.47% cell efficiency, which is near the highest values found in literature for this pigment.

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Section: Flavonoidsmentioning

confidence: 99%

Section: How the Dye Solution Adsorbs Onto Semiconductor Dssc Filmmentioning

confidence: 99%

Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

García-Salinas

Ariza

2019

Applied Sciences

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“…109 SFD has also been proposed to improve the preparation of dye-sensitised solar cells (DSSC). 110 According to the authors, anthocyanin-sensitised titanium dioxide solar cells show improved photoelectric conversion efficiency. The use of supercritical carbon dioxide was proposed as an alternative solvent medium to achieve the incorporation of anthocyanin, a natural flavonoid dye, in nanocrystalline titanium dioxide photo-electrodes.…”

Section: Dyeing Of Non-textile Materialsmentioning

confidence: 99%

“…Furthermore, the voltage-current testing of the photocells obtained using supercritical carbon dioxide resulted in higher current and voltage production with respect to the conventional dye-dipped products. 110 Another recent application is the SFD of buttons made of different materials. 111 Even though buttons are non-textile materials, this application may have potential interest for the textiles industry.…”

Section: Dyeing Of Non-textile Materialsmentioning

confidence: 99%

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Recent advances in supercritical fluid dyeing

Banchero

2020

Coloration Technology

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Supercritical fluid dyeing is a promising technology that was first proposed in the 1980s to overcome the high energy demand and water consumption of conventional textile coloration. This review covers its advances from 2014 to the present, from the successful industrial implementation of supercritical fluid dyeing of polyethylene terephthalate to the most recent results obtained for the dyeing of other synthetic and natural textiles. Specific attention is also dedicated to the most innovative applications of supercritical fluid dyeing such as the functionalisation of textile and non-textile substrates, which may give rise to the development of other sustainable processes or novel advanced materials in the near future.

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Boosting solar hydrogen production via electrostatic interaction mediated E. coli-TiO2−x biohybrid system

Lv,

Huang,

Gao

et al. 2024

Nano Res.

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Fabrication of anthocyanin-sensitized nanocrystalline titanium dioxide solar cells using supercritical carbon dioxide

Cited by 4 publications

References 16 publications

Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

Recent advances in supercritical fluid dyeing

Boosting solar hydrogen production via electrostatic interaction mediated E. coli-TiO2−x biohybrid system

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