Improved efficiency of DSSC using combustion synthesized TiO2

Umale, Sanjivani; Sudhakar, Vediappan; Sontakke, Sharad M.; Krishnamoorthy, Kothandam; Pandit, Aniruddha B.

doi:10.1016/j.materresbull.2018.09.044

Cited by 42 publications

(17 citation statements)

References 24 publications

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“…DSSCs are considered an improvement over other solar cells, as the dyes are very effective in converting sunlight into energy over Si‐based solar cells, 16 and they have more depth in the nanostructure, so, more photons from sunlight are absorbed 12 . Moreover, their relatively low cost, environmentally friendly and simple manufacturing processes, make this cell a good alternative to Si‐based solar cells 17,18 . The theoretical efficiency of a DSSC is approximately 30% 19 ; but in a laboratory, the maximum conversion efficiency of a photon to current is approximately 14.3% 20 .…”

Section: Introductionmentioning

confidence: 99%

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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Summary ZnO, 1% Ti doped ZnO and 1% Ti and (0.5%, 1%, and 1.5%) Cu co‐doped ZnO thin films are deposited on fluorine doped tin oxide glass substrates using sol‐gel technique. The impact of Ti and Cu co‐doping on optical, structural, and photovoltaic properties of ZnO thin films have been analyzed. X‐ray diffraction also confirms the hexagonal wurtzite crystal structure of the film. The 1% Ti and 1% Cu co‐doping percentage has an astonishing impact on the structural properties of the doped film, such as large grain size (19 nm), d‐spacing (2.48 Å), small dislocation line density (2.96 × 1015 m−2), lattice parameters (a = b = 3.2 Å, c = 5.2 Å), bond length (1.9 Å) and positional parameter (3.7 × 10−1) of the ZnO thin film. Optical parameters like reflectance, absorbance, transmittance, refractive index, and dielectric constants are calculated in the range of spectral from (250‐750) nm by using an ultraviolet ‐ visible spectrophotometer. In the visible region, all the films have approximately 85% transmittance, which is excellent for solar cells. The ZnO film prepared at the co‐doping percentage of 1% Ti and 1% Cu has high absorbance, high refractive index (2.09) and small band gap energy (3.37 eV) as compared to other doped films. The dye‐sensitized solar cells of these films as a Photoanode have been fabricated and studied the efficiency variation of films. It is found that the performance of the dye‐sensitized solar cell (DSSC) using a Ti‐Cu co‐doped film is much better than a pure ZnO film. The highest efficiency of DSSC 2.38% is achieved in the dye‐sensitized solar cell by using a 1% Ti and 1% Cu co‐doped ZnO thin film. When Ti is doped in ZnO then the surface area and pore size of the ZnO increased, which increase the dye loading ability. Cu reduces the recombination rate and enhances the electron injection efficiency rate from the dye to the conduction band of ZnO. Therefore, it is suggested that the thin films prepared by co‐doping of Cu and Ti into ZnO will upgrade the efficiency of cell.

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Section: Introductionmentioning

confidence: 99%

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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“…In the first place, this shows that Ag treatment does not affect the nanofibers crystallinity and also indicates the low crystallographic properties of Ag nanoparticles. By calculating the crystallite size of the nanofibers through the Debye-Scherrer formula [20], we estimate a crystallite size of around 40 nm for the electro-spun TiO 2 nanofiber, which is a suitable amount in cases of electrical and optical properties [21].…”

Section: 2 Experimentsmentioning

confidence: 99%

Efficiency enhancement in dye-sensitized solar cells through the decoration of electro-spun TiO2 nanofibers with Ag nanoparticles

Moradi

Abrari

Ahmadi

2020

J Mater Sci: Mater Electron

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Dye-sensitized solar cells (DSSCs) are low cost and eco-friendly photovoltaic devices which require new ideas for further development. In this paper, we use electro-spun TiO 2 nanofibers to prepare the DSSCs photoanode. In order to isolate the FTO and electrolyte species, we deposit a spin-coated TiO 2 blocking layer at their interface. The performance of this cell is further improved by introducing surface plasmon resonances (SPRs) at the surface of the nanofibers. It is shown that SPRs increase the generated current in the cells by providing a higher light absorption and lower recombination. Our best cell showed an efficiency of 6.19%, which is a 28% improvement in comparison to the bare DSSC with 4.84% efficiency. The results of this paper are acquired and confirmed by XRD, FESEM, TEM, EDS, dye-loading, IPCE, J-V, and EIS measurements.

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“…Kulkarni et al [37] obtained nitrogen-doped Nb 2 O 5 at different concentrations and found that the mesoporous layers contributed to the reduced electronic recombination in Nb 2 O 5 used as a semiconductor. However, other materials obtained by combustion synthesis, such as TiO 2 , presented a large surface area and homogeneity, which proved to be beneficial in their DSSC application [38]. Methods that use polymeric precursors to synthesize oxides involve a reaction between citric acid and ethylene glycol with the chelation of metallic cations followed by polymerization [39,40].…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Multi-Photonic behavior of Nb2O5 and its correlation with synthetic methods

et al. 2021

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The performance of niobium pentoxide (Nb 2 O 5 ) as photoanodes in dye-sensitized solar cells (DSSCs) and as catalysts in the photocatalytic degradation of Rhodamine B (RhB) was investigated. Four samples of Nb 2 O 5 (Nb 2 O 5 _SG, Nb 2 O 5 _CR, Nb 2 O 5 _PP, and Nb 2 O 5 _MA) were synthesized by four different methods, respectively, entailing the sol-gel, combustion, polymeric precursors, and a microwave-assisted hydrothermal reaction. In all these samples, the orthorhombic phase of Nb 2 O 5 was obtained, which resulted in different shapes and assemblies, which is very relevant because the surface area, shape, and size distribution of the nanoparticles significantly contribute to the optical process. The bandgap remained constant at 3.0 eV for all the samples, even for the sample prepared by the combustion method. An additional phase, which is related to local distortions, was revealed by Raman spectroscopy within the vibration range of 688-260 cm -1 . DSSCs using photoanodes with smaller and more dispersed Nb 2 O 5 particles showed better results than those with inhomogeneities. For comparison, DSSCs were assembled using two different counter electrodes, platinum and graphite. The DSSC with platinum showed better photovoltaic results, mainly with photocurrents from 1.17 mA.cm -2 for Nb 2 O 5 _CR to 1.64 mA.cm -2 for Nb 2 O 5 _SG. The same trend was observed for the photocatalytic degradation of RhB, where the smaller and dispersed particles of Nb 2 O 5 _CR and Nb 2 O 5 _SG exhibited the best performance and, respectively, degraded approximately 75% and 61% of the RhB dye over 180 min. Therefore, the results of this study established a correlation between the synthesis methods and photonic behavior.

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Improved efficiency of DSSC using combustion synthesized TiO2

Cited by 42 publications

References 24 publications

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Efficiency enhancement in dye-sensitized solar cells through the decoration of electro-spun TiO2 nanofibers with Ag nanoparticles

Multi-Photonic behavior of Nb2O5 and its correlation with synthetic methods

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