Photosensitization of nanoporous TiO<sub>2</sub>films with natural dye

Jin, En Mei; Park, Kyung-Hee; Jin, Bo; Yun, Je-Jung; Gu, Hal-Bon

doi:10.1088/0031-8949/2010/t139/014006

Cited by 35 publications

(12 citation statements)

References 30 publications

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“…Since the incident of solar light often produce local heat on the cell, it is important to study the light absorption behaviour of the extracted dyes by varying the temperature. Here, the light absorption characteristics of the dyes are studied by varying the temperature (in the range 25-70 o C) and pH (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) of the extracted dyes.…”

Section: Extraction and Characterisation Techniques For Dyesmentioning

confidence: 99%

“…Such bonding is not sufficient to delocalize the photo-excited electrons from dye to photo-anode resulting low V OC . The presence of carboxylic acid group in beetroot extract has an advantage for anchoring the dye to the ZnO surface [12].…”

Section: Photocurrent-photovoltage Characteristics Of Developed Dye-smentioning

confidence: 99%

“…achiote seeds, rosa xanthina, bamboo leaves, red-perilla, red cabbage etc.) and investigated in terms of their photosensitizing behaviour for DSSC application [10][11][12][13][14]. The performances of natural dyes in 4 DSSCs are studied mostly when these are anchored with titania (TiO 2 ) based photo-anode.…”

Section: Introductionmentioning

confidence: 99%

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Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Sengupta

Mondal

2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

113

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Section: Extraction and Characterisation Techniques For Dyesmentioning

confidence: 99%

Section: Photocurrent-photovoltage Characteristics Of Developed Dye-smentioning

confidence: 99%

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Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Sengupta

Mondal

2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

113

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“…The DSSC sensitized by red Sicilian orange achieved higher photoelectric conversion efficiency at 0.66% maximum [14]. Jin et al took wormwood as a natural dye, and the photoelectric conversion efficiency of the prepared DSSC was 0.9% [15]. Calogero et al used carrot and fruit of the overlord tree as natural dyes, and the photoelectric conversion efficiencies of the prepared DSSCs were 1.7% and 1.26%, respectively [16].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Natural Dye Extracted from Wormwood and Purple Cabbage for Dye-Sensitized Solar Cells

Chang

Kao

Chen

et al. 2013

International Journal of Photoenergy

104

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This study used natural dyes as sensitizers of dye-sensitized solar cells (DSSCs) to replace expensive chemical synthetic dyes. We prepared two natural dyes, chlorophyll dye and anthocyanin dye, by extracting them from wormwood and purple cabbage, respectively. Moreover, we mixed the prepared chlorophyll dye and anthocyanin dye at 5 different volume ratios to form cocktail dyes. For preparation of photoelectrode, P25 TiO2nanoparticles were used to prepare paste, which was coated on fluorine-doped tin oxide (FTO) conductive glass by the spin coating method at different spin coating speeds in order to form TiO2thin films with different thicknesses. The DSSC prepared by the cocktail dye achieves photoelectric conversion efficiency (η) of 1.95%, open-circuit voltage (VOC) of 0.765 V, and short-circuit current density (JSC) of 5.83 mA/cm2. Moreover, the prepared DSSC sensitized solely by chlorophyll extract of wormwood achieved a photoelectric conversion efficiency (η) of 0.9%, whereas the DSSC sensitized solely by anthocyanin extract of purple cabbage achieved a photoelectric conversion efficiency of 1.47%, achieving the longest lifetime of electrons amongst these three dyes.

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“…Considering other similar DSSCs the J sc of 2.3 mA/cm 2 is high and the fill factor of 0.71 is noticeably high [29,[35][36][37][38][39][40]. The good J sc may be due to the capability of the sensitizer to absorb sunlight over a wider region of the solar spectrum, and the higher power conversion efficiency, which is fairly good in comparison with the other similar studies [29,36,38,[41][42][43][44][45][46]. The high fill factor shows a low equivalent series resistance and high equivalent shunt resistance [47] and it can be related to the good sensitization properties of saffron petal dye extract.…”

Section: Resultsmentioning

confidence: 83%

Dye-Sensitized Solar Cell Using Saffron Petal Extract as a Novel Natural Sensitizer

Hosseinpanahi

Abbaspour‐Fard

Feizy³

et al. 2016

Journal of Solar Energy Engineering

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Natural dye extract of the saffron petal, purified by solid-phase extraction (SPE) technique, has been studied as a novel sensitizing dye to fabricate TiO2 nanoparticles-based dye-sensitized solar cells (DSSC). The extract was characterized using ultraviolet–visible (UV–Vis) and Fourier transform infrared (FTIR) spectroscopies to confirm the presence of anthocyanins in saffron petals. The typical current–voltage and the incident photon to current efficiency (IPCE) curves were also provided for the fabricated cell. The saffron petal extract exhibited an open-circuit voltage (Voc) of 0.397 V, short circuit current density (Jsc) of 2.32 mA/cm2, fill factor (FF) of 0.71, and conversion efficiency of 0.66%, which are fairly good in comparison with the other similar natural dye-sensitized solar cells. These are mainly due to the improved charge transfer between the dye extract of saffron petal and the TiO2 anode surface. Considering these results, it can be concluded that the use of saffron petal dye as a sensitizer in DSSC is a promising method for providing clean energy from performance, environmental friendliness, and cost points of view.

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Photosensitization of nanoporous TiO₂films with natural dye

Cited by 35 publications

References 30 publications

Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Characterization of Natural Dye Extracted from Wormwood and Purple Cabbage for Dye-Sensitized Solar Cells

Dye-Sensitized Solar Cell Using Saffron Petal Extract as a Novel Natural Sensitizer

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Photosensitization of nanoporous TiO2films with natural dye

Cited by 35 publications

References 30 publications

Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Visible light absorption and photo-sensitizing properties of spinach leaves and beetroot extracted natural dyes

Characterization of Natural Dye Extracted from Wormwood and Purple Cabbage for Dye-Sensitized Solar Cells

Dye-Sensitized Solar Cell Using Saffron Petal Extract as a Novel Natural Sensitizer

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Photosensitization of nanoporous TiO₂films with natural dye