Highly efficient betanin dye based ZnO and ZnO/Au Schottky barrier solar cell

Thankappan, Aparna; Divya, Sasidharan Padmaja; Augustine, Anju K; Girijavallaban, C.P.; Radhakrishnan, P.; Thomas, Sheenu; Nampoori, V. P. N.

doi:10.1016/j.tsf.2015.03.052

Cited by 10 publications

(12 citation statements)

References 34 publications

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“…The better conversion was achieved due to the wider light absorption of mixture dye than the individual dyes [20]. Aparna et al used betanin dye from beet roots to study the effect of Au doping on ZnO, thus improved the efficiency of the solar cell from 0.086 to 1.71 % [21].…”

Section: Introductionmentioning

confidence: 99%

Betalain and anthocyanin dye-sensitized solar cells

Ramamoorthy

Radha²,

Maheswari³

et al. 2016

J Appl Electrochem

104

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In the present work, the mechanism behind the functioning of the eco-friendly dye-sensitized solar cell was explored. Dye-sensitized solar cells were fabricated using natural dyes extracted from common pear (Opuntia dillenii) and red tamarind (Tamarindus indica), and 1:1 mixture. Betalain and anthocyanin were identified as the main pigments that sensitize the semiconductor TiO 2 film. The best conversion efficiency of 0.47 % was achieved from betalain dyes and 0.14 % from anthocyanin dyesensitized solar cell [under standard Air Mass 1.5 illumination (85 mW cm -2 )]. The mixture of dye (1:1 mixture) adsorbed onto TiO 2 exhibited an efficiency of 0.20 %. The light absorption behavior of extracted dyes was studied using ultraviolet-visible analysis. The influence of the binding nature of the dyes with TiO 2 surface on the efficiency of the solar cells was analyzed through Fourier transform infra-red analysis. The electrochemical impedance spectroscopy was used to find out the internal charge transfer resistance of the cells. The device incident photonto-current efficiency was obtained from 5 to 25 % for different natural dyes and found to coincide with the photocurrent-voltage characteristics and electrochemical impedance spectroscopy analysis. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Betalain and anthocyanin dye-sensitized solar cells

Ramamoorthy

Radha²,

Maheswari³

et al. 2016

J Appl Electrochem

104

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“…For DSSC technology, SPR can be utilized to boost the absorption ability of the incident radiation by the photoelectrode because Au nanoparticles produce a light scattering process of the incident radiation when both the incident radiation and SPR wavelength are close to each other. In this work, the absorption peaks located between 513 and 577 nm are adjacent to the absorption band of N719 dye in 525 nm, then the dispersed light due to the SPR effect can be absorbed by the N719 dye (Bora et al, 2013;Thankappan et al, 2015;Lu et al, 2016).…”

Section: Resultsmentioning

confidence: 90%

ZnO Nanowires/N719 Dye With Different Aspect Ratio as a Possible Photoelectrode for Dye-Sensitized Solar Cells

et al. 2021

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The vapor-liquid-solid (VLS) process was applied to fabricate zinc oxide nanowires (ZnO NWs) with a different aspect ratio (AR), morphological, and optical properties. The ZnO NWs were grown on a system that contains a quartz substrate with transparent conductive oxide (TCO) thin film followed by an Al-doped ZnO (AZO) seed layer; both films were grown by magnetron sputtering at room temperature. It was found that the ZnO NWs presented high crystalline quality and vertical orientation from different structural and morphological characterizations. Also, NWs showed a good density distribution of 69 NWs/μm2 with a different AR that offers their capability to be used as possible photoelectrode (anode) in potential future device applications. The samples optical properties were studied using various techniques such as photoluminescence (PL), absorption, and transmittance before and after sensitization with N719 dye. The results demonstrated that NW with 30 nm diameter had the best characteristics as feasible photoelectrode (anode) (high absorption, minimum recombination, high crystallinity). Also, the present samples optical properties were found to be improved due to the existence of N719 dye and Au nanoparticles on the tip of NWs. NWs grown in this work can be used in different photonic and optoelectronic applications.

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“…Notably, this pigment can be extracted from Caryophyllales plants [66,97]. Betanins have inspired researchers to utilize these compounds for sensitizers in DSSCs [70][71][72][73][74][75][76][77][78].…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…(3) the incorporation of a small amount of metal/cation to tune the electronic properties of the photoanode [73,74,77]; and (4) the choice of the electrolyte system [70,72,74,77].…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Natural resources for dye-sensitized solar cells

Kusumawati

Hutama

Wellia

et al. 2021

Heliyon

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Highly efficient betanin dye based ZnO and ZnO/Au Schottky barrier solar cell

Cited by 10 publications

References 34 publications

Betalain and anthocyanin dye-sensitized solar cells

Betalain and anthocyanin dye-sensitized solar cells

ZnO Nanowires/N719 Dye With Different Aspect Ratio as a Possible Photoelectrode for Dye-Sensitized Solar Cells

Natural resources for dye-sensitized solar cells

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