Monodispersed ZnO Nanoparticles and Their Use in Heterojunction Solar Cell

Patidar, Dinesh; Kaswan, Anusaiya; Saxena, Niharika; Sharma, Kailash Chand

doi:10.1155/2013/260521

Cited by 17 publications

(10 citation statements)

References 43 publications

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“…[16] carried out green synthesis of nanoparticles by biological systems they reported peaks absorption around 350 nm due to large excitation binding energy at room temperature. ZnO nanoparticles was blended with a poly-3-hexyl-thiophene as active material for high performance solar cell by [17,18] blended ZnO.NPs with P3HT and an improvement was reported in interchains and intrachains ordering when compared to pure P3HT. Power conversion efficiency of solar cells also improved.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of zinc oxide nanoparticles using bashful (Mimosa pudica), leaf extract: a precursor for organic electronics applications

et al. 2020

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Efforts has been intensified in the field of research for nanomaterials to bridge the gap for energy supply in this century. A plant-based material that may provide solutions to the current energy crisis may be found in nanomaterials. Green synthesis of nanoparticles using plant extract is gaining importance as an alternative to conventional chemical and physical method of synthesis, because of its simplicity and environmental friendliness. In this research we synthesized Zinc oxide nanoparticle (ZnO.NPs) using plant extracts and deposited using spin-coating technique. The obtained samples were characterized by UltraViolet-Visible spectrophotometer, Fourier Transform Infra-Red spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Solar simulator for electrical properties. The maximum absorption peaks occurred at 235 nm, 250 nm, 270 nm, and 300 nm respectively but lower when compared with the bulk size that occurred at 350 nm and in the visible spectrum of the wavelength band. Band gap energy of zinc oxide nanoparticle at 500 rpm was 3.50 eV. ZnO.NPs FTIR spectrum was recorded in the range of 4000-500 cm −1 . The synthesis ZnO NPs FTIR result shows Zn-O functional group was found at low wavenumber. SEM images of the samples give information on the morphology which are spherical and granular nature. The XRD pattern of synthesized nanoparticles shows that the substances only belong to ZnO since there is no diffraction peaks of other impurities and the average grain size of the particles was estimated to be 14.7 nm. ZnO.NPs thin film device under illumination has efficiency of 0.7%. Based on electrical properties of the fabricated thin film device, the parameter shows it could be suitable for photoanode of Dye sensitized solar cell.

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Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of zinc oxide nanoparticles using bashful (Mimosa pudica), leaf extract: a precursor for organic electronics applications

et al. 2020

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“…In the current epoch, ZnO nanoparticles (NPs) have momentously fascinated researchers because of their traits such as high electron mobility, good transparency, and luminescence. 1,2 Consequently, ZnO NPs are one of the most extensively used materials in a variety of applications. 3 However, ZnO NPs are considered extremely toxic to the environment, and their wide band gap has created limited practical applications as photocatalyst and antimicrobial agent.…”

Section: Introductionmentioning

confidence: 99%

Strategy of metal iron doping and green-mediated ZnO nanoparticles: dissolubility, antibacterial and cytotoxic traits

et al. 2017

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Undoped and Fe-doped ZnO nanoparticles (NPs) were synthesized using leaf extract as a reducing agent. The physicochemical traits, dissolution, cytotoxicity, as well as the antioxidant, photocatalytic and antibacterial activities of synthesized NPs were investigated. The results revealed that ZnO NPs were rod shaped with hexagonal phase structure, and their crystal size, dissolubility and aggregation decreased with Fe doping of NPs. Cytotoxicity of the NPs was studied against MCF-7 cells by MTT assay. IC values for undoped and 1 wt% Fe-doped ZnO NPs were found to be 400 and 600 μg mL, respectively. Cell viability with Fe-doped ZnO NPs was higher than with undoped ZnO. Among the synthesized NPs, -mediated 1 wt% Fe-doped ZnO shows a better decolourization efficiency of 97% for indigo carmine dye under solar irradiance. The antibacterial activity of NPs was tested against Gram-negative and Gram-positive using disc diffusion, minimum inhibitory concentration and growth curve method. The bactericidal activity of Fe-doped ZnO NPs was more prominent with than bacteria and when compared to undoped ZnO.

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“…In addition, ZnO nanoparticles have a lower conduction band than the lowest unoccupied molecular orbital (LUMO) of P3HT, which facilitates the transport of electrons from donor to acceptor [18]. Thus, a combination of P3HT and ZnO nanoparticles can be used to achieve the expected and improved performance in hybrid solar cells [16,17], although the PCE for the hybrid solar cells is still less than 1% [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Light Irradiation on the Diffusion Rate of the Charge Carrier Hopping Mechanism in P3HT–ZnO Nanoparticles Studied by μ+SR

et al. 2021

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Blended regio-regular P3HT–ZnO nanoparticles are a hybrid material developed as an active layer for hybrid solar cells. The study of the hopping mechanisms and diffusion rates of regio-regular P3HT–ZnO nanoparticles is significant for obtaining intrinsic charge transport properties that provide helpful information for preparing high-performance solar cells. The temperature dependences of the parallel and perpendicular diffusion rates in regio-regular P3HT–ZnO nanoparticles determined from muon spin relaxation measurements were investigated by applying various longitudinal fields. We investigated the effect of light irradiation on the diffusion rates in regio-regular P3HT–ZnO nanoparticles. We found that with increasing temperature, the parallel diffusion rate decreased, while the perpendicular diffusion rate increased. The ratio of the parallel to perpendicular diffusion rate (D‖/D⊥) can be used to indicate the dominant charge carrier hopping mechanism. Without light irradiation, perpendicular diffusion dominates the charge carrier hopping, starting at 25 K, with a ratio of 1.70×104, whereas with light irradiation, the perpendicular diffusion of the charge carrier starts to dominate at the temperature of 10 K, with a ratio of 2.40×104. It is indicated that the additional energy from light irradiation affects the diffusion, especially the charge diffusion in the perpendicular direction.

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Monodispersed ZnO Nanoparticles and Their Use in Heterojunction Solar Cell

Cited by 17 publications

References 43 publications

Green synthesis and characterization of zinc oxide nanoparticles using bashful (Mimosa pudica), leaf extract: a precursor for organic electronics applications

Green synthesis and characterization of zinc oxide nanoparticles using bashful (Mimosa pudica), leaf extract: a precursor for organic electronics applications

Strategy of metal iron doping and green-mediated ZnO nanoparticles: dissolubility, antibacterial and cytotoxic traits

Effect of Light Irradiation on the Diffusion Rate of the Charge Carrier Hopping Mechanism in P3HT–ZnO Nanoparticles Studied by μ+SR

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