Zinc oxide nanostructure-based dye-sensitized solar cells

Kumar, Rajesh; Umar, Ahmad; Kumar, Gaurav; Nalwa, Hari Singh; Kumar, Anil; Akhtar, M. Shaheer

doi:10.1007/s10853-016-0668-z

Cited by 96 publications

(39 citation statements)

References 198 publications

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“…However, the conversion efficiency values (h) for the Eu-doped and undoped based DSSCs were 0.50 and 0.34%, respectively, which implies in an increase around 45%. These values are in good agreement with the literature that shows a conversion efficiency around 0.38% for DSSCs in same conditions and based on undoped ZnO nanorods [58,59].…”

Section: Resultssupporting

confidence: 92%

A theoretical and experimental investigation of Eu-doped ZnO nanorods and its application on dye sensitized solar cells

Fonseca

Siqueira

Landers

et al. 2018

Journal of Alloys and Compounds

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a b s t r a c tThis paper describes the electrodeposition of Europium-doped Zinc Oxide (ZnO) nanorods as well its application as photoanodes in dye sensitized solar cells (DSSCs). The incorporation of the Europium in the ZnO structure was evidenced by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The DSSCs based on Eu-doped nanorods photoanodes exhibits a higher conversion efficiency value (h) (0.50%) compared to the undoped photoanodes (0.34%). Mott-Schottky analysis was performed and this increase is assigned to the better electronic injection efficiency from the dye to the conduction band of Eu-doped ZnO nanorods, since the Europium incorporation in the ZnO matrix was able to down-shift its conduction band. The improvement on the DSSC performance was around 45%, showing the great potential from the practical point of view. To complement the experimental data, computational simulations were employed based on DFT framework, in order to carry out a detailed analysis of the electronic structures of these materials, as well as to provide an elucidation of its underlying physical mechanism at an atomic level.

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Section: Resultssupporting

confidence: 92%

A theoretical and experimental investigation of Eu-doped ZnO nanorods and its application on dye sensitized solar cells

Fonseca

Siqueira

Landers

et al. 2018

Journal of Alloys and Compounds

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“…Therefore, the increase in efficiency is totally due to the increased J SC, which itself may have two reasons: (1) The suitable amount of Ag nanoparticles decorated on TiO 2 nanofibers surface creates plasmonic resonances which integrate the electrical field in the vicinity of the Dye molecules and increases both the dye adsorption and electron-hole generation which improves the current produced by the DSSC [23]. 2The increased active surface area due to the Ag nanoparticles also improves the dye adsorption, which is also helpful in the improvement of current [24]. As we can see from Fig.…”

Section: Resultsmentioning

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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“…ZnO has also proved a great versatility as it can be obtained through many possible synthetic methodologies [3,4], assuring multiple morphologies and sizes that go from micro- to nanoscale [5,6]. Due to the large variety of physico-chemical properties induced by the multiple morphologies and sizes thus obtained, in the last decade numerous potential and practical applications have been found for ZnO spanning from optoelectronics [7] to solar cells [8], thin-film transistors [9], catalysis [10], sensing [11], biomedicine [12], and antibacterial agents [13].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Effect of Photoluminescent Zinc Oxide Nanoparticles Formed in the Presence of Quaternary Ammonium Salts

et al. 2019

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The comparative effect of two quaternary ammonium salts from 1,2-bis(4-pyridyl)ethane (PyQAs), namely N,N′-diphenacyl-1,2-bis(4-pyridinium)ethane dibromide (PyQAs1) and N,N′-di(p-methoxyphenacyl)-1,2-bis(4-pyridinium)ethane dibromide (PyQAs2), upon the size and photoluminescence of zinc oxide nanoparticles (ZnO NPs) was investigated. The formation of ZnO NPs took place in the presence of variable amounts of the two PyQAs species (1, 2.5, and 5%), according to the chemical precipitation of zinc(II) acetate with potassium hydroxide in ethanol under reflux. The obtained ZnO NPs were structurally characterized by means of X-ray powder diffraction, infrared, and Raman spectroscopy. The fluorescence of all supernatant solutions, observed under ultraviolet light, determined us to make an investigation of the solutions by means of liquid chromatography coupled with electrospray ionization mass spectrometry (LC-MS-ESI) in order to elucidate the identity of the newly formed fluorescent species. Such an occurrence thus allowed the invocation of the catalytic effect of zinc(II) ions towards the organic transformation of both nonfluorescent PyQAs surfactants into new fluorescent organic species.

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Zinc oxide nanostructure-based dye-sensitized solar cells

Cited by 96 publications

References 198 publications

A theoretical and experimental investigation of Eu-doped ZnO nanorods and its application on dye sensitized solar cells

A theoretical and experimental investigation of Eu-doped ZnO nanorods and its application on dye sensitized solar cells

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

Catalytic Effect of Photoluminescent Zinc Oxide Nanoparticles Formed in the Presence of Quaternary Ammonium Salts

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