Enhanced photovoltaic performance of a dye sensitized solar cell with Cu/N Co-doped TiO2 nanoparticles

Dhonde, Mahesh; Sahu, Kirti; Murty, V. V. S.; Nemala, Siva Sankar; Bhargava, Parag; Mallick, Sudhanshu

doi:10.1007/s10854-018-8605-3

Cited by 26 publications

(16 citation statements)

References 38 publications

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“…Hence, photoactivity in presence visible light was improved and performance of the DSSC was enhanced when Cr-, Ni-or Cu-doped TiO 2 was used as the photoanode. [64][65][66] An Ag-doped TiO 2 photoelectrode can improve the surface area and visible light absorption better than undoped TiO 2 . As surface area increases, TiO 2 NPs can adsorb a greater number of dye molecules.…”

Section: Solar Cellsmentioning

confidence: 99%

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Chowdhury

Saini

Roy

2021

J. Electron. Mater.

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Nano-biotechnology deals with the role of biological species in the field of nanotechnology and has gained significant attention in the last few decades. Nano-sized materials have superior physical, chemical, optical, electrical and mechanical properties in comparison with the bulk materials. A number of techniques have been employed so far to synthesize nano-structured materials, and among these, bio-inspired methods are found to be economically viable and environmentally sustainable. Titanium dioxide (TiO 2 ) is one of the most abundant and nontoxic transition metal oxides with high thermal stability, good oxidation and corrosion resistance, good hydrophobicity and non-wettability. All these properties along with a wide band gap make TiO 2 an important material for various applications in the fields of solar cells, sensors, batteries, and supercapacitors. In this review work, a comprehensive study has been carried out on the synthesis of TiO 2 nanoparticles (NPs) using different biological extracts and applications of TiO 2 NPs in the design and development of various electronic devices. KeywordsTiO 2 NPs • bio-fabrication • solar cells • lithium-ion batteries • supercapacitor • sensor * Jagannath Roy

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Section: Solar Cellsmentioning

confidence: 99%

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Chowdhury

Saini

Roy

2021

J. Electron. Mater.

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“…It is known that TiO 2 is an excellent dielectric material with a faradaic charge storage behavior [ 8 , 9 ], is cost-effective, and is found in abundance, but when TiO 2 alone is used as a supercapacitor electrode, its behavior is relatively poor [ 10 ]. Therefore, combining TiO 2 with a different metal or nonmetal (Cu [ 11 ], Ni [ 12 ], Mn [ 13 ], Co [ 14 ]) can lower the bandgap energy, improve the optical response, and increase the charge carrier concentration, which all enhance the supercapacitive properties and power conversion efficiency of the new system [ 11 , 15 , 16 ]. For example, Krishnan et al found that Ni as a dopant in TiO 2 nanofibers increases the conductivity and improves the specific capacitance from 40 to 179 F·g −1 , for current density 1 A·g −1 [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Multi-Functional Materials Based on Cu-Doped TiO2 Ceramic Fibers with Enhanced Pseudocapacitive Performances and Their Dielectric Characteristics

Pascariu¹,

Homocianu²,

Vacareanu³

et al. 2022

Polymers

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In this work, pure TiO2 and Cu (0.5, 1, 2%)-doped TiO2 composites prepared by electrospinning technique followed by calcination at 900 °C, and having high pseudocapacitive and dielectric characteristics were reported. These nanocomposites were characterized by scanning electron microscopy, X-ray diffraction, and dynamic water sorption vapor measurements. The structural characterization of these nanostructures highlighted good crystallinity including only the rutile phase. The electrochemical characteristics were investigated by cyclic voltammetry and galvanostatic charge–discharge measurements, which were performed in a KOH electrolyte solution. Among the Cu-doped TiO2 nanostructures that were prepared, the one containing 0.5% Cu exhibited superior electrochemical properties, including high specific gravimetric capacitance of 1183 F·g−1, specific capacitance of 664 F·g−1, energy density of 45.20 Wh·kg−1, high power density of 723.14 W·kg−1, and capacitance retention of about 94% after 100 cycles. The dielectric investigation shows good dielectric properties for all materials, where the dielectric constant and the dielectric loss decreased with the frequency increase. Thus, all the interconnected studies proved that these new materials show manifold ability and real applicative potential as pseudocapacitors and high-performance dielectrics. Future work and perspectives are anticipated for characterizing electrochemical and dielectric properties for materials including larger amounts of Cu dopant.

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“…Hence, the non-metallic modified photocatalytic materials have higher visible light activity. The non-metallic element N is the most widely used modified element because it is close to the O element in both atomic radius and elemental position, and some of the O atoms can be replaced by N atoms [17]. Sato et al [18] found the N element doping can endow visible light activity to TiO 2 as early as 1986, however, it did not attract widespread attention until 2001 when Asahi [19] reported the results about N doping.…”

Section: Introductionmentioning

confidence: 99%

Preparation of N-TiO₂/SiO₂ composites by solvothermal method and their photocatalytic properties

Dong

Wang

et al. 2022

Mater. Res. Express

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In order to improve the visible light catalytic activity of titanium dioxide (TiO2) and ensure its long-term stability on the surface of concrete, an N-TiO2/SiO2 composite was prepared using tetrabutyl titanate, nitric acid, and modified SiO2 nanospheres as the precursors by a solvothermal method. The effect of nitric acid on the phase composition, morphology and photoelectric properties of the synthesized photocatalytic composites was systematically studied by various characterization methods. The results show that the optimum nitric acid/butyl titanate volume ratio is 1/6. The nitrogen-doped TiO2 nanoparticles were uniformly dispersed on the surface of spherical SiO2 with a diameter of 200 nm. The degradation rate of simulated pollutants (RhB) with pH 5 and 7 exceeded 95% within 30 minutes and the catalytic effect remained excellent after five repetitions without much weakening. The excellent visible photocatalytic performance can be attributed to the doping of N replacing part of the oxygen atoms in TiO2, forming the energy level of N 2p at the O 2p energy level and reducing the TiO2 energy band gap to 2.99 eV. At the same time, the better dispersion of N-TiO2/SiO2 prepared by this new synthesis method also plays an important role in the improvement of visible light photocatalytic activity.

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Enhanced photovoltaic performance of a dye sensitized solar cell with Cu/N Co-doped TiO2 nanoparticles

Cited by 26 publications

References 38 publications

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Multi-Functional Materials Based on Cu-Doped TiO2 Ceramic Fibers with Enhanced Pseudocapacitive Performances and Their Dielectric Characteristics

Preparation of N-TiO₂/SiO₂ composites by solvothermal method and their photocatalytic properties

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Enhanced photovoltaic performance of a dye sensitized solar cell with Cu/N Co-doped TiO2 nanoparticles

Cited by 26 publications

References 38 publications

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Bio-fabrication of TiO2 Nanomaterials and Their Applications in Electronics Devices

Multi-Functional Materials Based on Cu-Doped TiO2 Ceramic Fibers with Enhanced Pseudocapacitive Performances and Their Dielectric Characteristics

Preparation of N-TiO2/SiO2 composites by solvothermal method and their photocatalytic properties

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Preparation of N-TiO₂/SiO₂ composites by solvothermal method and their photocatalytic properties