Structural and optical properties of ZnO nanotube synthesis via novel method

Madlol, Rajaa A.

doi:10.1016/j.rinp.2017.04.018

Cited by 23 publications

(7 citation statements)

References 17 publications

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“…The ZnO thin films exhibited higher absorbance values at short wavelength (Fig. 5), reaching lower values at the IR region 24 . The obtained absorbance peaks were at wavelength less than 380 nm, same as Yang et al 20 …”

Section: Optical Characterizationmentioning

confidence: 92%

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

et al. 2018

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Dye-sensitized solar cells (DSSCs) are a feasible option for photovoltaic energy. Zinc oxide is an n-type semiconductor employed as photoanode on DSSCs. ZnO thin films were electrodeposited to study the effects of different potentials applied during deposition. SEM images, XRD and UV-Vis analysis were conducted to reveal the morphologic, structural and optical properties of the films at three potentials. DSSCs were assembled and the photovoltaic parameters were obtained through J-V plots. DSSC with 0.031% of efficiency was demonstrated at -1.4 V of deposition potential.

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Section: Optical Characterizationmentioning

confidence: 92%

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

et al. 2018

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“…Madlol et al [58] published their research on synthesizing ZnO NT by using a novel method. This method employed a commercial tungsten lamp as a heat source for the aqueous chemical reaction.…”

Section: Zno Nanotubesmentioning

confidence: 99%

Recent progress in solar cells based on one dimensional ZnO nanostructures

2023

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In recent years, one-dimensional (1D) nanostructures, including nanorods, nanowires and nanotubes have been receiving a great deal of research attention due to their special and outstanding many characteristics that play a very important role in the manufacture of high-performance devices, including photodetectors, solar cells, light emitting diodes and power nano-generators, with novel functionalities. To date, a number of materials have been employed in the production of 1D structures for the fabrication of high-performance electronic and opto-electronic devices. Due to its stability, high conductivity, high electron affinity, and outstanding electron mobility, zinc oxide (ZnO) stands out among the others as a material that is particularly appealing to be employed in a variety of opto-electronic device applications. In this review article, we provide a brief overview of the most recent advances in popular synthesis methods and photovoltaic applications of 1D ZnO nanostructures, including our own recent studies. In particular, a special focus is given on the progress in 1D ZnO nanostructures based inorganic solar cells. Future research opportunities and challenges for solar cells based on 1D ZnO nanostructures are also highlighted.

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“…The broad green emissions are accounted from several intrinsic structural and surface defects such as interstitials oxygen defects (O i ), oxygen vacancies (V O ), and antisite oxygen (O Zn ) in the synthesized ZnO nanoflowers [42]. It was suggested that the emission peaks are governed the electronic transitions due to the travelling of electron from valence band to the conduction band of the ZnO nanostructures [43]. Using room temperature photoluminescence (PL) spectroscopy, the optical properties of the flower-shaped ZnO nanostructures were determined, as shown in Figure 3.…”

Section: Characterization and Properties Of Flower-shaped Zno Nanostrmentioning

confidence: 99%

Direct Growth of Flower-Shaped ZnO Nanostructures on FTO Substrate for Dye-Sensitized Solar Cells

et al. 2019

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The proposed work reports that ZnO nanoflowers were grown on fluorine-doped tin oxide (FTO) substrates via a solution process at low temperature. The high purity and well-crystalline behavior of ZnO nanoflowers were established by X-ray diffraction. The morphological characteristics of ZnO nanoflowers were clearly revealed that the grown flower structures were in high density with 3D floral structure comprising of small rods assembled as petals. Using UV absorption and Raman spectroscopy, the optical and structural properties of the ZnO nanoflowers were studied. The photoelectrochemical properties of the ZnO nanoflowers were studied by utilizing as a photoanode for the manufacture of dye-sensitized solar cells (DSSCs). The fabricated DSSC with ZnO nanoflowers photoanode attained reasonable overall conversion efficiency of~1.40% and a short-circuit current density (J SC ) of~4.22 mA cm −2 with an open circuit voltage (V OC ) of 0.615 V and a fill factor (FF) of~0.54. ZnO nanostructures have given rise to possible utilization as an inexpensive and efficient photoanode materials for DSSCs.Crystals 2019, 9, 405 2 of 13 of recombination rate and efficient electron transport in the photoanode [15]. Most the reported DSSCs based on ZnO photoanodes are inferior to DSSCs based on the TiO 2 photoanode [16][17][18], which normally can be attributed to ZnO dissolution to Zn 2+ via the adsorbed acidic dye such as N3, N719, and black dye, resulting in the aggregate formation of Zn 2+ and dye molecules [19]. These aggregates formation of Zn 2+ /dye complexes are further blocked the injected electrons from the photoexcited dye molecules to the ZnO, which results in decrease in proper electron injection. It is realized that some extent of research on the improvement in performance of ZnO-based DSSC are needed to outperform the aggregates formation of Zn 2+ /dye complexes [19].ZnO is highly scrutinized n-type semiconducting oxide owing to its an unique wide band gap of 3.37 eV and considerable large exciton binding energy of~60 meV at ambient condition [20,21]. The unique properties of ZnO materials have attracted attention in the area of electrochemical and photoelectrochemical devices because they have special ability to grow a variety of different nanostructures [22][23][24][25][26][27][28][29]. Apart from thermal growth of ZnO, ZnO synthesis at low temperature solution processes has recently been popularized due to ease of processibility, high aspect growth ratio, low-cost, and high yield [30]. In past few years, researches are experimented to elevate the conversion efficiency of ZnO-based DSSCs by adopting different structural and morphological aspects like 1D, 2D, and 3D branched networks and mixed morphologies for preparing ZnO photoanodes [31][32][33]. Several works on the utilization of 1D and 2D ZnO-based photoanodes have already been reported, but the conversion efficiencies of DSSCs are not competent to TiO 2 based DSSCs [29][30][31][32][33].Herein, we report the low-temperature hydrothermal synthesis, characterization...

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Structural and optical properties of ZnO nanotube synthesis via novel method

Cited by 23 publications

References 17 publications

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

Recent progress in solar cells based on one dimensional ZnO nanostructures

Direct Growth of Flower-Shaped ZnO Nanostructures on FTO Substrate for Dye-Sensitized Solar Cells

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