Power‐dependent Photocatalytic Activity of ZnO

Chun, So Yeon; Moon, Cheol Joo; Han, Noh Soo; Jeong, Seonghyun; Choi, Myong Yong; Park, Seung Min; Song, Jae Kyu

doi:10.1002/bkcs.11097

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…The electronic states along with their binding energies of Y, Gd and Zr are tabulated in Table 2 [21][22][23]. The spectrum of O 1s for BCZYG thin film in Fig.…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 99%

Investigation on spray deposited BaCe0.7Zr0.1Y0.1Gd0.1O2.9 thin film for proton conducting SOFC

Dubal

Jadhav²,

Bhosale

et al. 2015

J Mater Sci: Mater Electron

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The BaCe 0.8 Y 0.2 O 2.9 (BCY) is co-doped with Zr and Gd with a motive to improve its chemical stability and electrical conductivity. The films are spray deposited on alumina substrate. The films annealed at different temperatures are studied by XRD, XPS, FTIR, Raman and SEM/AFM. The annealing is observed to promote crystallinity, grain growth and densification. The XRD pattern reveals orthorhombic crystal structure. The presence of Ce(IV) and other elements is confirmed by XPS and EDAX, which also assures absence of surface impurities. The most intense band at 355 cm -1 is observed in micro Raman spectrum. The morphology of the film changes with the annealing. AFM reveals grains of 51 nm. The electrical conductivity of BCZYG is measured in air and moist air and it is compared with that of BC, BCY, BCZY and BCGY. Among all, BCZYG shows highest conductivity of 10.02 9 10 -3 S cm -1 in moist-air.

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“…The electronic states along with their binding energies of Y, Gd and Zr are tabulated in Table 2 [21][22][23]. The spectrum of O 1s for BCZYG thin film in Fig.…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 99%

Investigation on spray deposited BaCe0.7Zr0.1Y0.1Gd0.1O2.9 thin film for proton conducting SOFC

Dubal

Jadhav²,

Bhosale

et al. 2015

J Mater Sci: Mater Electron

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show abstract

“…At the same time, there are several reports on a light intensitydependent anomalous decrease in the photocatalytic activity of metal-doped wide bandgap semiconductors, e.g. Pt@TiO 2 11 , ZnO 14 , GaN:ZnO solid solutions 15 , or plasmonic heterostructures 16 . In the first case, the effect was attributed to "interactions between the Pt surface and reactive intermediates (…) at low light intensity condition" 11 .…”

mentioning

confidence: 99%

Light intensity-induced photocurrent switching effect

et al. 2020

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A better control over processes responsible for the photocurrent generation in semiconductors and nanocomposites is essential in the fabrication of photovoltaic devices, efficient photocatalysts and optoelectronic elements. Therefore, new approaches towards photochemical properties tuning are intensively searched for. Among numerous parameters, the photocurrent polarity is of great importance to the overall performance of a device. Usually, the polarity is controlled through an alignment of electronic states/bands, tailoring of applied potential or suitable selection of incident light wavelengths. In most scenarios though, the influence of light intensity is somehow neglected and either some arbitrarily chosen, natural conditions are mimicked or this parameter is varied only in a narrow range. Here we present a ternary nanocomposite in which the persistent photocurrent polarity switching is achieved through changes in the light intensity. We also present arguments suggesting this behaviour is of a general character and should be considered also in other photochemical systems.

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Power‐dependent Photocatalytic Activity of ZnO

Cited by 2 publications

References 17 publications

Investigation on spray deposited BaCe0.7Zr0.1Y0.1Gd0.1O2.9 thin film for proton conducting SOFC

Investigation on spray deposited BaCe0.7Zr0.1Y0.1Gd0.1O2.9 thin film for proton conducting SOFC

Light intensity-induced photocurrent switching effect

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