Bitter Leaf (Vernonia amygdalin) for Dye Sensitized Solar Cell

Boyo, A. O.; Shitta, M.B.O.; Oluwa, T.; Adeola, Salawu Oluwakanyinsola

doi:10.3923/tasr.2012.558.564

Cited by 20 publications

(8 citation statements)

References 15 publications

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“…6. It was reported that there is better DSSC stability as pH decreases because anthocyanin existed as flavylium ion, which is stable form of anthocyanin [15]. An increasing pH hydrates this ion to quinonoidal bases.…”

Section: Effect Of Ph Of Dianthus Barbatus Extract Solutionsmentioning

confidence: 99%

“…The redox is sandwiched between the dye monolayer and the platinum film. Natural dyes, which can be simply extracted from plant flowers, seeds, roots and leaves, have attracted much more interest [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In these works, it has been emphasized that efficient dyes can be extracted from natural products and used as photosensitizers for efficient DSSCs.…”

Section: Introductionmentioning

confidence: 99%

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Three Fresh Plant Seeds as Natural Dye Sensitizers for Titanium Dioxide Based Dye Sensitized Solar Cells

Taya

El-Ghamri

El-Agez

et al. 2015

BJAST

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In this paper, we used the extracts of three fresh plant seeds as photosensitizers for DSSCs based on TiO 2 nanopowder as a semiconducting material. Ethanol was used to extract the dyes from the seeds. The fill factors of the cells sensitized with the seeds of Raphanus raphanistrum, Lepidium sativum and Dianthus barbatus were 0.45, 0.40, and 0.48, respectively, whereas the efficiencies were 0.05, 0.03, and 0.15. The performance of the DSSC sensitized with Dianthus barbatus was investigated at various pH values of the dye solution and found to have a considerable effect of the cell efficiency.

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Section: Effect Of Ph Of Dianthus Barbatus Extract Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three Fresh Plant Seeds as Natural Dye Sensitizers for Titanium Dioxide Based Dye Sensitized Solar Cells

Taya

El-Ghamri

El-Agez

et al. 2015

BJAST

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show abstract

“…Dye-sensitized solar cells [8][9][10][11], triplet excited states creation in organic molecules [12][13],…”

Section: Introductionmentioning

confidence: 99%

Improving the Electrical and Optical Properties of C40 Fullerene Using the Donor–Acceptor Groups

2021

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In this research, the C50 fullerene was employed as the source of the π electrons and the electron donor-acceptor groups were used to enhance its optical properties. Considerable enhancement in its electronic and optical property of as the result of donor and acceptor group presence was observed. For instance, in UV-Visible absorption spectrum, the number of absorption lines significantly increase which may be the relaxation of the electronic transition selection rules.Considerably, the substituted forms of C50, has numbers of absorption bands in near infrared region. The BH2-C50-NCH3Li and NO-C50-NCH3Li molecules have superior improvement in optical properties. Finally, the donor and acceptor groups influence on non-linear optical properties (NLO) of C50 were explored and the considerable improvement in NLO properties of C50 was observed which the NLO improvements for BH2-C50-NCH3Li and NO-C50-CH2Li cases is higher than others.

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“…The photosensitizers are known as molecules that may be used to cause photochemical changes in other molecules [1]. Common uses of photosensitizers may be listed as the hydrogen production process [2][3], polymerization by light [4][5], degradation of material by light [6][7], Dye-sensitized solar cells [8][9][10][11], triplet excited states creation in organic molecules [12][13], photodynamic therapy [14][15], etc. Absorption of ultraviolet or visible light and its transmission to adjacent molecules is an important feature of photosensitizers.…”

Section: Introductionmentioning

confidence: 99%

Improving the electrical and optical properties of C50 fullerene using the Donor-Acceptor groups

Ayoubikaskooli

Ghaedi

Shamlouei

et al. 2021

Preprint

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In this research, the C50 fullerene was employed as the source of the π electrons and the electron donor-acceptor groups were used to enhance its optical properties. Considerable enhancement in its electronic and optical property of as the result of donor and acceptor group presence was observed. For instance, in UV-Visible absorption spectrum, the number of absorption lines significantly increase which may be the relaxation of the electronic transition selection rules. Considerably, the substituted forms of C50, has numbers of absorption bands in near infrared region. The BH2–C50-NCH3Li and NO–C50-NCH3Li molecules have superior improvement in optical properties. Finally, the donor and acceptor groups influence on non-linear optical properties (NLO) of C50 were explored and the considerable improvement in NLO properties of C50 was observed which the NLO improvements for BH2-C50-NCH3Li and NO-C50-CH2Li cases is higher than others.

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Bitter Leaf (Vernonia amygdalin) for Dye Sensitized Solar Cell

Cited by 20 publications

References 15 publications

Three Fresh Plant Seeds as Natural Dye Sensitizers for Titanium Dioxide Based Dye Sensitized Solar Cells

Three Fresh Plant Seeds as Natural Dye Sensitizers for Titanium Dioxide Based Dye Sensitized Solar Cells

Improving the Electrical and Optical Properties of C40 Fullerene Using the Donor–Acceptor Groups

Improving the electrical and optical properties of C50 fullerene using the Donor-Acceptor groups

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