Solanum nigrum and Eclipta alba leaf pigments for dye sensitized solar cell applications

Gokilamani, N.; Muthukumarasamy, N.; Thambidurai, M.; Ranjitha, A.; Velauthapillai, Dhayalan

doi:10.1007/s10971-013-3172-9

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…Kenhārāj is an annual herb, with leaves which are a rich source of natural dyes. The presence of flavones apigenin and luteolin in flavone‐7‐O‐glycoside and flavone‐C‐glucoside are the main colorants responsible for the absorption of light energy . The presence of iron caused a decrease in the QY for all pairs of Mahī samples except M1–M8.…”

Section: Resultsmentioning

confidence: 99%

A physicochemical characterisation of a medieval herbal ink, Mahī, of Assam, India

Goswami

Chamuah

Dutta

2018

Coloration Technology

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Mah ı, a unique herbal ink used in medieval Assam in India for writing and illustrating manuscripts, is known for its intense colour and durability for centuries, and its non-corrosive nature. Mah ı is distinctly different from the other contemporary inks used elsewhere in the world, including other parts of India. The interesting features of Mah ı are due to its special recipe involving several herbal ingredients in addition to iron sourced from fish blood or the rust of iron tools, with cow urine as an extractant and solvent. The objective of the current study is an in-depth understanding of the traditional method of the preparation of Mah ı, and its characterisation through analysis of the physicochemical properties using spectroscopic and imaging techniques as well as biochemical analysis. A series of model Mah ı samples are prepared following the traditional method with varying ingredients, and their compositions and physicochemical properties are evaluated with respect to the ingredients using standard methods and analytical tools including atomic absorption spectroscopy, tensiometry, ultraviolet ( UV )-visible, Fourier Transform-infrared ( FT-IR), Raman, steady-state fluorescence, UV fluorescence and emission microscopy. The colour of the ink has been attributed to various polyphenols, gallic acid, epigallocatechin gallate, epicatechin, quercetin, kaempferol and tannic acid, and their iron complexes. UV fluorescence and emission microscopy confirmed an autofluorescence indicative of the presence of phenolic and chlorophyll pigments. Solubilisation by glycosidic biosurfactant contributes to stabilisation of Mah ı. The non-corrosive nature of Mah ı has been attributed to its neutral pH and absence of free iron and copper ions.

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Section: Resultsmentioning

confidence: 99%

A physicochemical characterisation of a medieval herbal ink, Mahī, of Assam, India

Goswami

Chamuah

Dutta

2018

Coloration Technology

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“…The production cost of silicon based-conventional solar cell is relatively high and it consumes more energy. This device has been attracting many researchers at last decade since the first report made by Gratzel dan coworkers 2 due to DCCS is produced at relatively low cost 1,3 , easy prepared and fabricated, simple design structure 4 , light, potentially applicable in flexible devices as if compared with conventional pn junction devices 5 , transparent module construction, better performance on wider tap, lower sensitivity to the angle of incidence and condition of darkness 6 , and has a high conversion efficiency 7 . Silicon basedconventional solar cell has achieved efficiency as high as 20% while highest organic solar cell efficiency ever achieved is 1,49% 8 .…”

Section: Introductionmentioning

confidence: 99%

“…The selected material advantages include 1,7 : available in nature in large quantities 1,4 , easy to use, non-toxic, ecofriendly and easily biodegradable. The types of materials that will be developed 2 include flowers, plant leaves, fruits, fruit peels and roots.…”

Section: Introductionmentioning

confidence: 99%

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An Investigation of pH Effects on the Properties of the Fabricated Banana Flower Extracts-based Organic Solar Cell

Yulianti¹,

Saputra²

2017

Orient. J. Chem

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The purpose of this research is to fabricate banana flower extracts-based dye-sensitized solar cell (DSSC) using spin coating method. DSSC is made of photoactive material of banana extract by spincoating method and thermal evaporation, using indium tin oxide (ITO) substrate. Spincoater speed, coating duration and heating temperature are fixed as controlled variables, anthocyanin pH is fixed as independent variable, while optical and electrical properties of solar cell device are fixed as dependent variables. The anthocyanin content decreased as well as the pH increased and the voltage knee also increased. The pH enhance has caused the current generation of device decreased.

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“…These electrons migrate through the host semiconductor particles until they reach the collector; also the holes simultaneously generated are reduced by a redox electrolyte or hole carrier at the back electrode (Pt). Because of low material cost, simple preparation, and lack of heavy metals, natural dyes are more favorable to be applied in such device [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Grape pigment (malvidin-3-fructoside) as natural sensitizer for dye-sensitized solar cells

Gokilamani¹,

Muthukumarasamy²,

Thambidurai

et al. 2014

Mater Renew Sustain Energy

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TiO 2 nanocrystalline thin films have various applications, among them dye-sensitized solar cells are more promising and low-cost alternative to conventional inorganic photovoltaic devices. TiO 2 nanocrystalline thin films have been sensitized with the natural dye (malvidin-3-fructoside) extracted from grape fruits. The interaction between the semiconductor and the dye has been studied. The maximum absorption band of grape extract at 525 nm has been shifted to 545 nm after incorporation of the dye indicating interaction of the dye molecules with TiO 2. The grape extract has polyphenolic anthocyanin pigment (malvidin-3-fructoside), which has carboxylic and hydroxyl groups that can attach effectively to the surface of TiO 2 film. The dye-sensitized TiO 2-based solar cell sensitized using grape dye exhibited a J sc of 4.06 mA/cm 2 , V oc of 0.43 V, FF of 0.33 and efficiency of 0.55 %. Natural dyesensitized TiO 2 photo electrodes present the prospect to be used as an environment-friendly, low-cost alternative system.

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Solanum nigrum and Eclipta alba leaf pigments for dye sensitized solar cell applications

Cited by 7 publications

References 14 publications

A physicochemical characterisation of a medieval herbal ink, Mahī, of Assam, India

A physicochemical characterisation of a medieval herbal ink, Mahī, of Assam, India

An Investigation of pH Effects on the Properties of the Fabricated Banana Flower Extracts-based Organic Solar Cell

Grape pigment (malvidin-3-fructoside) as natural sensitizer for dye-sensitized solar cells

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