High efficiency flexible dye-sensitized solar cells by multiple electrophoretic depositions

Chiu, Wei‐Hao; Lee, Kun‐Mu; Hsieh, Wen–Feng

doi:10.1016/j.jpowsour.2010.12.063

Cited by 72 publications

(46 citation statements)

References 15 publications

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“…On the other hand, in the sample heat-treated at T p , rutile was precipitated as main crystalline phase, and the diffraction peaks of anatase were not detected. In our previous report, 8 anatase is precipitated in glass sample first. After that, the phase transition to rutile phase occurred during heat-treatment at 709 • C in this glass system.…”

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confidence: 88%

“…This tendency accords with the SEM images reported in our previous paper. 8 Surface areas in Fig. 6 are evaluated to be 4.0 and 6.4 µm 2 for before and after chemical etching, respectively, therefore, the etched sample has 1.6 times larger surface area than before etching.…”

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confidence: 99%

“…In addition, porous TiO 2 nanomaterials are also widely used in energy-related applications. [7][8][9][10][11] However, on the other hand, very few applications of photocatalyst of bulk TiO 2 are used today. In future applications, bulk-form photocatalytic materials with useful properties, as easy forming of large size and cost-effective production, are quite important to realize the mega-photocatalytic system such as hydrogen creation by water-splitting, similar situation of mega-solar plants for energy sustainability [ Fig.…”

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Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass

et al. 2014

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The authors aim to report the largest enhancement of photocatalytic activity by chemical etching in anatase-type TiO2 crystallized glass. Optimization of several conditions for crystallization behavior and chemical etching to realize the nano-structured ceramics (NSC) has been performed in the crystallized glass. NSC-fabrication by chemical etching in the crystallized glass is one of the most effective solutions to provide bulk materials with high specific surface area. We have found that the best condition for the NSC fabrication as a novel bulk photocatalyst in our glass system, and have obtained 16 times higher catalytic activity than that of non-etched one.

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Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass

et al. 2014

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“…With EPD, it is possible to prepare homogeneous coated layers and the thickness of deposited films may be controlled by varying the EPD deposition parameters such as the choice of solvent (suspension), the zeta potential (through the charging mechanism), solid loading of the particles in the suspension and the deposition conditions such as the DC voltage and deposition time [15][16][17]. Different combinations of EPD deposition parameters have been applied by various authors to deposit TiO 2 thin films for applications in DSCs [18][19][20][21][22][23][24][25][26][27][28], in ceramic coatings [29][30][31][32] and biomedical applications [33][34][35].…”

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Electrophoretic Deposition of Titanium Dioxide Thin Films for Photocatalytic Water Purification Systems

Nyongesa¹

2017

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Abstract:In this study, electrophoretic deposition (EPD) technique was used to deposit titanium dioxide (TiO 2 ) thin films on conducting glass substrates for application in water purification from organic contaminants. Phenol was used as a model pollutant. The EPD suspension related parameters and deposition conditions were first optimized for good quality film deposits. The suspension stability and deposition conditions that result in good adherence of TiO 2 particles to the substrate with homogeneous film coatings, is ethanol with a pH of 3.0, a TiO 2 solid loading of 4.0 wt%, a 0.2 wt% iodine concentration in the solvent and a deposition voltage of 20.0V in a time of 210.0s. The photocatalytic activity of TiO 2 thin films decreases exponentially with the ultraviolet light (UV) illumination time and it is also dependent on film thickness, sintering temperature and the intensity of the UV light. Highest rate of photocatalytic activity is observed at an optimal film thickness of 95.0 ± 2.0µm sintered at 300.0°C. The implications of these results are discussed for design of inexpensive waste water purification systems for light industries before discharge into the ecosystem.

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“…6 Utilizando a técnica de deposição eletroforética, Chiu e colaboradores conseguiram uma conversão de energia de 6,63%, preparando um filme de TiO 2 sobre um substrato polimérico. 39 Minoura e colaboradores desenvolveram uma pasta de partículas de TiO 2 com um precursor de Ti, que após aplicação em um substrato FTO e cristalização hidrotermal a 100 o C produziu filmes mesoporosos estáveis que renderam eficiências de até 4,2%. 40 Park e colaboradores desenvolveram um método usando uma pasta de TiO 2 altamente viscosa sem aglutinante e obteve eficiências de 2,5% para u eletrodo de μ de espessura seco a 150 o C. 41 Apesar das altas eficiências das CSSCs flexíveis obtidas nesses estudos prévios, os esforços de pesquisa foram confinados a células de tamanho pequeno que limitam o domínio do aplicativo.…”

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Titanium dioxide application in solar cells

Vitoreti¹,

Pena²,

Vaz³

et al. 2017

Rev. Virtual Quim.

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Abstract:Extensive research has been performed in solar cells field, due the fact that the main current energy sources are derived from finite fossil fuels, and cause environmental problems. In this perspective the sun can be seen as the energy future of the planet, being the most abundant renewable energy source. The solar cell basic operation is based on the semiconductors ability in converting sunlight into electricity when exposed to sun radiation. A semiconductor that has been highlighted in solar cells application is titanium dioxide (TiO 2 ), due to its intrinsic properties, such as a wide bandgap, transparence to visible light, photostability, a low cost material, and others. Among the main types of solar cells applying TiO 2 are the dye-and the quantum dots-sensitized solar cells, and perovskites cells. In this review the main aspects related to synthesis, textural and morphological properties of TiO 2 of interest for application in solar cells are discussed.Keywords: Titanium dioxide; semiconductor; solar cells. ResumoExtensivas pesquisas têm sido desenvolvidas com células solares (CSs), uma vez que as principais fontes de produção de energia atuais são derivadas de combustíveis fósseis finitos e que causam problemas ambientais. Nesta perspectiva, o sol pode ser visto como o futuro energético do planeta, sendo a fonte de energia renovável mais abundante. O funcionamento básico de uma CS se baseia na habilidade em que os semicondutores apresentam de converter a luz solar em eletricidade, quando expostos à radiação solar. Um dos semicondutores que têm se destacado em CSs é o dióxido de titânio (TiO 2 ), devido às suas propriedades intrínsecas, como uma larga banda proibida, transparência à luz visível, fotoestabilidade, baixo custo, dentre outras. Dentre os principais tipos de CSs que utilizam TiO 2 , estão as CSs sensibilizadas por corantes, por pontos quânticos e as de perovsquitas. Nesta revisão os principais aspectos relacionados à síntese, propriedades texturais e morfológicas do TiO 2 de interesse para aplicação em CSs são discutidos.

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High efficiency flexible dye-sensitized solar cells by multiple electrophoretic depositions

Cited by 72 publications

References 15 publications

Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass

Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass

Electrophoretic Deposition of Titanium Dioxide Thin Films for Photocatalytic Water Purification Systems

Titanium dioxide application in solar cells

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