Dye sensitized solar cells: From genesis to recent drifts

Sharma, Sunita; Siwach, Bulkesh; Ghoshal, S.K.; Mohan, Devendra

doi:10.1016/j.rser.2016.11.136

Cited by 113 publications

(54 citation statements)

References 38 publications

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“…At first, the Zn 2+ moves to the FTO-coated cathode, induced by the electrical field, which causes the increase of the OH -concentration and the formation of Zn(OH) 2 …”

Section: Morphologymentioning

confidence: 99%

“…This photo electrochemical conversion can be explained by the light harvesting of the dye molecules found on a typical DSSC 2 . In addition, by using dye, DSSCs can be colored or transparent, which increases the commercial use on locations where the appearance of the cell is important, like sunroofs and automobile panels 2 . Overall, a DSSC is composed by a photoanode, an oxide layer for electronic conduction, a monolayer of charge transfer dye, a redox electrolyte, usually an organic solvent that restores the dye by electron donation, and a counter electrode 3 .…”

Section: Introductionmentioning

confidence: 99%

“…The electrons circulate through the external circuit and, at the cathode; the electrolyte is regenerated by reduction 2 . Figure 1, adapted from Grätzel (2003), exemplifies the working principle of a DSSC, using titanate as photoanode 3 .…”

Section: Introductionmentioning

confidence: 99%

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Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

et al. 2018

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Dye-sensitized solar cells (DSSCs) are a feasible option for photovoltaic energy. Zinc oxide is an n-type semiconductor employed as photoanode on DSSCs. ZnO thin films were electrodeposited to study the effects of different potentials applied during deposition. SEM images, XRD and UV-Vis analysis were conducted to reveal the morphologic, structural and optical properties of the films at three potentials. DSSCs were assembled and the photovoltaic parameters were obtained through J-V plots. DSSC with 0.031% of efficiency was demonstrated at -1.4 V of deposition potential.

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“…At first, the Zn 2+ moves to the FTO-coated cathode, induced by the electrical field, which causes the increase of the OH -concentration and the formation of Zn(OH) 2 …”

Section: Morphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

et al. 2018

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“…1,5 O método de extração e a falta de grupos cromóforos mais eficientes na molécula, como COOH, H 2 PO 3 , SO 3 H, entre outros, como comprovado por espectroscopia na região do infravermelho, ligados na molécula, quando comparado aos fotossensibilizantes comercias, também podem ser os responsáveis por esse valor mais baixo, visto que não foram utilizados outras metodologias de extração que pudessem ocasionar em espécies ativas mais eficientes, capazes de se adsorverem na superfície do TiO 2 com maior facilidade e absorverem luz num espectro mais amplo. 4,20,[35][36][37] O melhor valor de fator de preenchimento encontrado para estas células foi de FF = 0,55. Kumara et al 7 encontraram um valor equivalente de fator de preenchimento, quando se utiliza o Hibiscus extraído em etanol, mostrando que a idealidade da célula produzida é a mesma do que se encontra na literatura e equivalente ao uso de células produzidas com corantes comerciais, como o N719 (FF = 0,52).…”

Section: Caracterização Eletroquímicaunclassified

Avaliação Da Adsorção E Estudo Eletroquímico De Células Solares Produzidas Com Tio2 E Corante Extraído Do Hibiscus

Tractz¹,

Maia²,

Dias³

et al. 2018

Quim. Nova

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HIBISCUS. Dye-sensitized solar cells using natural dyes have lower cost when compared to rutheniumbased dyes. This paper aims to evaluate, electrochemically, solar cells composed of TiO 2 with dye extracted from the Hibiscus (var. Sabdariffa) and propose an adsorption model capable of predicting the adsorption mechanism of the dye on the semiconductor surface. The characterization techniques used were: Fourier Transform Infrared Spectroscopy, UV-VIS Spectroscopy, Measurement of the Open Circuit Potential, Photocronoamperometry, and Current Density Curves vs. Potential. The infrared spectroscopy confirmed there was adsorption of dye on the TiO 2 surface. The adsorption isotherm with the better value of linear coefficient (R= 0.9874) was the Langmuir isotherm. The electrochemical techniques showed that the best cell prepared from a solution with a concentration of 5.27 mg L -1 of the natural dye, had an E ca = 516 mV, j = 0.15 mA cm -2 and an energy efficiency (η) of 0.15%.Keywords: photovoltaic cells; natural dyes; anthocyanin. INTRODUÇÃOCom o principal objetivo de reduzir custos e expandir o uso de dispositivos fotovoltaicos ao redor do mundo, o desenvolvimento de células solares sensibilizadas por corante (CSSC) vem crescendo muito nas últimas décadas. Gratzel et al., 1 em 1991, desenvolveram um dispositivo fotovoltaico baseado na junção de eletrodos nanoestruturados de TiO 2 , com fotossensibilizante eficiente em injeção de elétrons, que alcançou um aproveitamento energético de 7,9% sendo que valores de até 13% podem ser encontrados quando se utiliza corantes baseados em porfirina de Zn(II) e eletrólitos líquidos contendo Co(II)/ Co(III). O anodo do dispositivo é formado por um material semicondutor nanocristalino, depositado em um substrato condutor e impregnado por um fotossensibilizante. O contra eletrodo, geralmente formado por platina é o responsável por receber os elétrons, fechando o circuito. E por usa vez, o eletrólito, realiza a intermediação de cargas, ou seja, sofre redução, para regenerar o corante e se oxida posteriormente, recebendo os elétrons oriundos da platina. Estas reações, com seus respectivos tempos de vida são apresentados na Tabela 1. 3,4 Os corantes mais utilizados são os complexos metálicos baseados em rutênio, contendo grupos coordenantes, capazes de se adsorverem na superfície do semicondutor. Estes apresentam uma boa absorção no espectro solar, chegando a absorver na região do infravermelho. Apresentam complexas rotas sintéticas e foram devidamente desenvolvidos para aplicação nestes sistemas, o que encarece o custo do mesmo, chegando a valores próximos a U$ 3,000.00 4-6 por grama do

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“…There is an urgent need to develop sustainable energy to solve these imperative problems. Solar power is a popular sustainable energy source to help solve the energy problem [2,3].…”

Section: Introductionmentioning

confidence: 99%

Influence of thin film thickness of working electrodes on photovoltaic characteristics of dye-sensitized solar cells

Lai¹,

Hsu²,

Lai³

et al. 2017

MATEC Web Conf.

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Abstract. This paper presents the study of the influence of thin film thickness of working electrodes on the photovoltaic characteristics of dye-sensitized solar cells. Titanium dioxide (TiO 2 ) thin films, with the thickness from 7.67 to 24.3 μm, were used to fabricate the working electrodes of dye-sensitized solar cells (DSSCs). A TiO 2 film was coated on a fluorine-doped tin oxide (FTO) conductive glass substrate and then sintered in a high-temperature furnace. On the other hand, platinum (Pt) solution was coated onto an FTO substrate for the fabrication of the counter electrode of a DSSC. The working electrode immersed in a dye, the counter electrode, and the electrolyte were assembled to complete a sandwich-structure DSSC. The material analysis of the TiO 2 films of DSSCs was carried out by scanning electron microscopy (SEM) and ultraviolet-visible (UV-Vis) spectroscopy, while the photovoltaic characteristics of DSSCs were measured by an AM-1.5 sunlight simulator. The light transmittance characteristics of the TiO 2 working electrode depend on the TiO 2 film thickness. The thin film thickness of the working electrode also affects the light absorption of a dye and results in the photovoltaic characteristics of the DSSC, including open-circuited voltage (V OC ), short-circuited current density (J SC ), fill factor, and photovoltaic conversion efficiency.

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Dye sensitized solar cells: From genesis to recent drifts

Cited by 113 publications

References 38 publications

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

Avaliação Da Adsorção E Estudo Eletroquímico De Células Solares Produzidas Com Tio2 E Corante Extraído Do Hibiscus

Influence of thin film thickness of working electrodes on photovoltaic characteristics of dye-sensitized solar cells

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