ZnO and TiO2 Nanostructured Dye sensitized Solar Photovoltaic Cell

Sinha, Debabrata; De, D.; Goswami, Diganta; Mondal, Abhay Kumar; Ayaz, A.

doi:10.1016/j.matpr.2019.03.043

Cited by 23 publications

(10 citation statements)

References 11 publications

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“…Further, ZnO has strong radiation resistance. Therefore, ZnO has applications in many fields, including photocatalysis [ 13 , 14 ], photovoltaics [ 15 ], and gas sensing [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Yan

2022

Nanomaterials

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The degradation of pollutants in wastewater using abundant resources and renewable energy sources, such as light, is attractive from an environmental perspective. ZnO is a well-known photocatalytic material. Therefore, in this study, a hierarchical ZnO microsphere precursor was prepared using a hydrothermal method. The precursor was subsequently annealed at different temperatures, which enabled the production of a ZnO catalyst having a controllable morphology. Specifically, as the annealing temperature increased, the precursor crystallized into hexagonal wurtzite and the crystallinity also increased. The catalysts were tested for their photocatalytic activity for the degradation of dye molecules (methylene blue and rhodamine B), and the catalyst sample annealed at 400 °C showed the best photocatalytic activity. The origin of this activity was studied using electron paramagnetic resonance spectroscopy and transient photocurrent measurements, and the structure of the optimal catalyst was invested using electron microscopy measurements, which revealed that it was formed of two-dimensional nanosheets having smooth surfaces, forming a 2D cellular network. Thus, we have presented a promising photocatalyst for the mineralization of organic contaminants in wastewater.

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“…Further, ZnO has strong radiation resistance. Therefore, ZnO has applications in many fields, including photocatalysis [ 13 , 14 ], photovoltaics [ 15 ], and gas sensing [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Yan

2022

Nanomaterials

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“…Over the past decade, Ti-and Zn-based oxides have received much attention due to their competitive cost, non-toxicity, excellent stability, availability, and ability to produce highly oxidizing radicals [1][2][3][4]. Titanium oxide (TiO 2 ) and zinc oxide (ZnO) are two well-known semiconductors that have been widely used to construct electron transport channels due to their appropriate bandgaps, efficient electron mobilities, and simple synthesis methods [5][6][7][8]. In addition, these oxides are promising semiconductors to eliminate organic pollutants with incomparable efficiency due to their tunable surface and structural functionality [9].…”

Section: Introductionmentioning

confidence: 99%

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

et al. 2021

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The search for alternative materials with high dye adsorption capacity, such as methylene blue (MB), remains the focus of current studies. This computational study focuses on oxides ZnTiO3 and TiO2 (anatase phase) and on their adsorptive properties. Computational calculations based on DFT methods were performed using the Viena Ab initio Simulation Package (VASP) code to study the electronic properties of these oxides. The bandgap energy values calculated by the Hubbard U (GGA + U) method for ZnTiO3 and TiO2 were 3.17 and 3.21 eV, respectively, which are consistent with the experimental data. The most favorable orientation of the MB adsorbed on the surface (101) of both oxides is semi-perpendicular. Stronger adsorption was observed on the ZnTiO3 surface (−282.05 kJ/mol) than on TiO2 (–10.95 kJ/mol). Anchoring of the MB molecule on both surfaces was carried out by means of two protons in a bidentate chelating (BC) adsorption model. The high adsorption energy of the MB dye on the ZnTiO3 surface shows the potential value of using this mixed oxide as a dye adsorbent for several technological and environmental applications.

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“…The better performance of DSSC is due to the molecular structure of riboflavin and chlorophyll pigment. Chlorophyll is used as a sensitizer for the manufacture of DSSCs, 80 where the ability to absorb solar energy by chlorophyll molecules promotes higher electron transfer performance 34 …”

Section: Dyes As Photosensitizersmentioning

confidence: 99%

“…35 The efficiency value of fruit ranges from 0.17% to 1.10%, while that of vegetables is 0.73%. The better performance of DSSC is due to the molecular structure of riboflavin and chlorophyll pigment, 80 where the ability to absorb solar energy by chlorophyll molecules promotes higher electron transfer performance. 34 In addition to the coloring factor, the composition of the constituent materials is also essential.…”

Section: Natural Dyes In Dssc Applicationmentioning

confidence: 99%

Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites

Mujtahid

Gareso

Armynah

et al. 2021

Intl J of Energy Research

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The energy demand for supporting the activity of human life is increasing where fossil fuels decreasing sharply every year and have an impact on increasing CO 2 emissions in the environment. An alternative solution for providing practical energy needs is using renewable energy such as solar cells. For environmentally friendly, economical, and efficient concepts, dye-sensitized solar cell (DSSC) is a promising alternative for the photovoltaic field. The performance of a DSSC depends on many factors, such as electron collection at the photoanode, photoanode light-harvesting efficiency, and others. In this review article, we observe the influence of synthetic and natural dye materials on light-harvesting efficiency at photoanodes. The chemical structure of dyes plays an essential role in increasing photon absorption, thereby increasing electron injection and conversion efficiency. In addition to dyes, we also reviewed the influence of the shape of the DSSC structure, namely the sandwich, monolithic, and honeycomb structures, on the performance of DSSCs.This approach helps develop a narrative about the potential and relationship of dyes and structure in increasing efficiency as a guide for synthesizing new materials in the future.

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ZnO and TiO2 Nanostructured Dye sensitized Solar Photovoltaic Cell

Cited by 23 publications

References 11 publications

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites

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ZnO and TiO2 Nanostructured Dye sensitized Solar Photovoltaic Cell

Cited by 23 publications

References 11 publications

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO 2 ‐based nanocomposites

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Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites