Continuous wet-process growth of ZnO nanoarrays for wire-shaped photoanode of dye-sensitized solar cell

Guo, Wanwan; Du, Jun; Tao, Changyuan; Qing, Sheng-Lan; Fan, Xing

doi:10.1016/j.jcis.2016.06.007

Cited by 13 publications

(7 citation statements)

References 34 publications

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“…The solution was stirred at room temperature for 20 min. The substrate was inserted in a beaker containing this solution and transferred into a CEM Mars 6 model microwave oven and irradiated at 600 W for different times (5,8, and 10 min). Therefore, the obtained samples are named ZnO-5, ZnO-8, and ZnO-10.…”

Section: Methodsmentioning

confidence: 99%

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Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications

Ilıcan

Görgün

Çağlar

et al. 2017

Journal of Nanomaterials

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Microwave-assisted chemical bath deposition (MW-CBD) was used to deposit zinc oxide nanorods (ZnO-NRs) films by using different microwave irradiation time. The films exhibit a good crystallinity having a hexagonal wurtzite phase formation. Although the dominant preferred orientation was not observed for the ZnO-5 and ZnO-10, ZnO-8 showed (002) preferred orientation. The emission scanning electron microscope (FESEM) showed almost randomly oriented hexagonal nanorods on the surface. A slight decrease in the length of the observed hexagonal nanorods due to the increase in the irradiation time was observed, changing from 550 nm to 300 nm. The p-Si/n-ZnO-NRs heterojunction photodiodes were fabricated. The current-voltage characteristics of these photodiodes were investigated under dark and different illumination intensity. An increase in the reverse current with increasing illumination intensity confirmed that the fabricated photodiodes exhibited a photoconducting behavior. In addition, the barrier height and series resistance values of the photodiodes were determined from capacitance-voltage measurements.

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Section: Methodsmentioning

confidence: 99%

“…So they have been extensively studied and applied in many applications, such as sensors [1,2], light-emitting diodes [3,4], thin film transistors [5,6], photodetectors [7], and solar cells [8,9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications

Ilıcan

Görgün

Çağlar

et al. 2017

Journal of Nanomaterials

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“…[54] Well-aligned ZnO NRAs have been developed on the surface of the metal-plated polymer by a wet chemistry reaction in a sophisticated continuous reactor to achieve wire-shaped photoanodes. [138] The growth was controlled with computational flow-field simulation, which yields wire-shaped ZnO NAs photoanodes having better PEC performance. The length of ZnO NRAs approached a few micrometers in the continuous reactor.…”

Section: Zinc Oxide (Zno)-based Aligned Nasmentioning

confidence: 99%

Quasi‐1D Aligned Nanostructures for Solar‐Driven Water Splitting Applications: Challenges, Promises, and Perspectives

et al. 2021

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Solar energy conversion is considered to be one of the promising alternatives to fossil fuels. The photoelectrochemical (PEC) water splitting into hydrogen and oxygen is a prominent approach to utilize solar energy to produce clean hydrogen energy. In PEC water splitting, semiconductors play a central role for absorbing the solar radiations in the UV‐visible region and generating electron‐hole pairs that contribute to water splitting. This review provides an extensive overview of the 1D aligned nanoarrays (1D‐NAs) and their architectures as photoactive materials. 1D‐NAs can be in the form of nanorods (NRs), nanowires (NWs), nanopencils, and nanotubes (NTs), etc. The initial part of the review is dedicated to the synthesis and characterizations of the 1D‐NAs, which is followed by useful synthetic protocols explicitly employed for the synthesis of NAs morphologies and the mechanisms involved in PEC water splitting. The final section of the review provides examples of highly anticipated TiO2, ZnO, BiVO4‐based, and other miscellaneous aligned NAs utilized for PEC water splitting. The PEC water splitting performance of aligned NAs is compared with other morphologies in terms of photocurrent densities. In this review, it is attempted to provide an account of state‐of‐the‐art stable, novel, and low‐cost aligned photoactive materials for PEC water splitting.

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“…Zinc oxide (ZnO) is a cheap, abundant and versatile semiconductor material, [1,2] which is largely explored in several frontline applications like gas sensors, [3–5] LED display devices, [6] photoelectrodes, [7] ultraviolet photodetectors, [8,9] electrochromism, [10] solar cells, [11] a wide range of heterojunction nanocomposite materials for photocatalysis, [12–14] biomedicine /drug‐delivery, [15] catalysis [16] and so on. The semiconductor and optical properties of the metal oxides can be tuned significantly by modification of crystal phase of the materials [17–19] .…”

Section: Figurementioning

confidence: 99%

Transformation of Wurtzite ZnO to a New Triclinic Nanoporous ZnO Phase via Hydrothermal Treatment with Metformin for Designing Proton Conducting Material

Chatterjee

Palui

Chongdar

et al. 2021

Chemistry An Asian Journal

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Zinc oxide is one of the most widely studied semiconductor metal oxides, which predominantly crystallizes as hexagonal wurtzite and often cubic zinc‐blende phases. Here we report the transformation of the highly stable wurtzite ZnO to a new triclinic phase NZO‐2 by using metformin as a template during post‐synthesis hydrothermal treatment. This crystalline phase of the material NZO‐2 has been identified through the refinement of the powder XRD data. NZO‐2 possesses porous rod like particle morphology consisting of the self‐assembly of 3–7 nm size spherical nanoparticles and interparticle nanoscopic voids spaces. NZO‐2 has been surface phosphorylated and the resulting material displayed good proton conductivity. Further, NZO‐2 displayed ultra‐low band gap of 1.74 eV, thereby responsible for red emission under high energy laser excitation and this may open new opportunities in optoelectronic application of ZnO.

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Continuous wet-process growth of ZnO nanoarrays for wire-shaped photoanode of dye-sensitized solar cell

Cited by 13 publications

References 34 publications

Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications

Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications

Quasi‐1D Aligned Nanostructures for Solar‐Driven Water Splitting Applications: Challenges, Promises, and Perspectives

Transformation of Wurtzite ZnO to a New Triclinic Nanoporous ZnO Phase via Hydrothermal Treatment with Metformin for Designing Proton Conducting Material

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