Plasmon-assisted radiolytic energy conversion in aqueous solutions

Kim, Baek Hyun; Kwon, Jae Wan

doi:10.1038/srep05249

Cited by 22 publications

(13 citation statements)

References 66 publications

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“…Wen et al 27 demonstrated the formation of 3D self-assembled structure of ZnO in the presence of In and Sn metal ions. In recent times, Kim and Kwon 28 used Ag seeded substrate to control the morphology of ZnO. In the present investigation, the morphological changes of ZnO were observed due to the presence of Eu and Sm ions used as dopants.…”

Section: Resultsmentioning

confidence: 70%

Shape tunable synthesis of Eu- and Sm-doped ZnO microstructures: a morphological evaluation

et al. 2015

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Facile and low-cost aqueous chemical bath deposition route has been demonstrated to fabricate Eu-and Sm-doped ZnO microstructures. The effect of Eu and Sm ions on the morphology of the ZnO was investigated. The synthesized doped ZnO microstructures were systematically characterized by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman and Fourier transform infrared spectra. FESEM images depicted the formation of Eu-doped ZnO microsphere and Sm-doped ZnO microplates. XRD spectra showed single crystalline nature of the undoped ZnO microdisks, whereas Eu-and Sm-doped ZnO exhibited the polycrystalline nature. The presence of Eu and Sm ions in the ZnO matrix was confirmed by XPS. This means that all the Eu ions substituted Zn 2+ as Eu 2+ into the ZnO matrix, whereas most of Sm ions were being in the trivalent state. This was probably due to the segregation of Sm 2 O 3 species on the surface of ZnO microstructures.

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Section: Resultsmentioning

confidence: 70%

Shape tunable synthesis of Eu- and Sm-doped ZnO microstructures: a morphological evaluation

et al. 2015

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“…8 shows the exemplary results of conformal ZNW growths on glass, PI, and PC substrates. The underlying mechanism on the Ag-mediated hydrothermal ZNW growth is attributed to the interactions between oxidized Ag surface and ZnO complexes in the solution [42,43]. Briefly, the ionized Ag surface generating on the native oxide (i.e.…”

Section: Low-temperature Znw Growth By Using Solution-processible Ag mentioning

confidence: 99%

“…Briefly, the ionized Ag surface generating on the native oxide (i.e. Ag 2 O) layer would electrostatically attract the negatively charged Zn ) [16,43] generating in the OH − -rich precursor solution (i.e. pH ~ 8-9 due to amine base HMTA), facilitating ZnO nucleation on the Ag-seeded substrate.…”

Section: Low-temperature Znw Growth By Using Solution-processible Ag mentioning

confidence: 99%

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Low-temperature large-area fabrication of ZnO nanowires on flexible plastic substrates by solution-processible metal-seeded hydrothermal growth

et al. 2020

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We have developed the low-temperature conformal ZnO nanowire fabrication on flexible plastic substrates by utilizing the solution-processible metal seed-assisted hydrothermal ZnO crystallization. Structural evolution of ZnO nanowires controlled by major parameters involving growth temperature, growth time, and seed coating condition, has been systematically investigated towards uniform and large-area growth of conformal ZnO nanowires. Direct ZnO nanowire growth on flexible plastics without undergoing the high-temperature seed sintering has been realized by developing the low-temperature Ag-seeded hydrothermal ZnO nanowire growth. The nanoporous Ag layer favorable for ZnO crystal nucleation and continued nanowire growth can be reduced from the Ag ion solution coating at the temperature as low as 130 °C. This tactfully enables the selective hydrothermal growth of ZnO nanowires on the Ag patterns on flexible plastics. Such an all-solution-processible low-temperature fabrication protocol may provide an essential and practical solution to develop many diverse applications including wearable and transparent electronics, sensors, and photocatalytic devices. As one example, we demonstrate that a transparent UV sensor can be devised based on the ZNW growth on the Ag micromesh electrode.

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“…In 2011, City Labs, Inc. was given the first general license to manufacture and distribute tritium betavoltaics operating in the nanowatt range for low power applications8. Currently, all commercial and laboratorial betavoltaics operate at efficiencies less than 3%29. Herein, we revisit the mechanisms involved in betavoltaic power generation and consider ways to improve the efficiency to levels exceeding 10%.…”

mentioning

confidence: 99%

Evaluation of a Silicon 90Sr Betavoltaic Power Source

Dixon

Rajan

Bohlemann

et al. 2016

Sci Rep

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Betavoltaic energy converters (i.e., β-batteries) are attractive power sources because of their potential for high energy densities (>200 MWh/kg) and long duration continuous discharge (>1 year). However, conversion efficiencies have been historically low (<3%). High efficiency devices can be achieved by matching β-radiation transport length scales with the device physics length scales. In this work, the efficiency of c-Si devices using high-energy (>1 MeV) electrons emitted from 90Sr as a power source is investigated. We propose a design for a >10% efficient betavoltaic device, which generates 1 W of power. A Varian Clinac iX is used to simulate the high-energy electrons emitted from 90Sr, and a high efficiency c-Si photovoltaic cell is used as the converter. The measured conversion efficiency is 16%. This relatively high value is attributed to proper length scale matching and the generation of secondary electrons in c-Si by the primary β-particles.

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Plasmon-assisted radiolytic energy conversion in aqueous solutions

Cited by 22 publications

References 66 publications

Shape tunable synthesis of Eu- and Sm-doped ZnO microstructures: a morphological evaluation

Shape tunable synthesis of Eu- and Sm-doped ZnO microstructures: a morphological evaluation

Low-temperature large-area fabrication of ZnO nanowires on flexible plastic substrates by solution-processible metal-seeded hydrothermal growth

Evaluation of a Silicon 90Sr Betavoltaic Power Source

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