Structural characterization of light-induced crystal growth in Se98Sb2 chalcogenide glass

Mehta, N.; Kumar, Anjani

doi:10.1016/j.jnoncrysol.2011.12.024

Journal of Non-Crystalline Solids

2012

DOI: 10.1016/j.jnoncrysol.2011.12.024

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Structural characterization of light-induced crystal growth in Se98Sb2 chalcogenide glass

N. Mehta

Anjani Kumar

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Cited by 4 publications

(2 citation statements)

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“…The Se-Sb glassy system has attracted a lot of interest for its potential application in photoconductive elements and memory devices [18][19][20]. A tremendous amount of research has been focused on its photoelectrical properties and thermal properties [21][22][23].…”

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confidence: 99%

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Improved thermal stability of antimony‐doped amorphous selenium film for X‐ray flat‐panel detectors

Chen

Dong

et al. 2012

Physica Status Solidi (a)

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Amorphous selenium (a-Se) film is a promising photoconductive material for X-ray flat-panel detectors (FPD) application. However, a-Se tends to be crystalline Se at near room temperature. This remarkable temperature sensitivity limits its practical application. To prevent the near-room-temperature crystallization of a-Se film, we fabricate antimony (Sb)-doped a-Se films using a vacuum evaporation technique equipped with an in situ cooling trap. We experimentally demonstrate that the Sb doping improves the thermal stability of a-Se film while possessing a similar X-ray photoelectric conversion efficiency as the pure a-Se film. After air annealing at 50 8C for 90 min, the X-ray diffraction (XRD) results of the 4.1 at.% Sb-doped a-Se film shows no detectable crystallization diffraction peak. Upon applying an electric field of 10 V mm À1 , such Sb-doped a-Se film exhibits dark current density below 1 nA cm À2, while under an X-ray dosage of about 4 mGy, the annealed Sb-doped a-Se film shows a photocurrent density of more than 100 nA cm À2 .

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confidence: 99%

“…As a group III element, Sb has a high Z and acts in principle as a crosslinking agent between Se chains. [20][21][22][23][24][25].…”

mentioning

confidence: 99%

Improved thermal stability of antimony‐doped amorphous selenium film for X‐ray flat‐panel detectors

Chen

Dong

et al. 2012

Physica Status Solidi (a)

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Laser-induced persistent photo-dielectric effects in Se–Te–Sn–Cd chalcogenide glassy semiconductors (STSC ChGs)

Kumar

Mehta

2018

J. Mater. Chem. C

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In Situ Formation of Z-Scheme Bi2WO6/WO3 Heterojunctions for Gas-Phase CO2 Photoreduction with H2O by Photohydrothermal Treatment

Zhang

Lin

et al. 2022

Catalysts

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We report a new photohydrothermal method to prepare a Bi2WO6/WO3 catalytic material for CO2 photoreduction by solar concentrators. The photohydrothermal treatment improves the physico-chemical properties of the Bi2WO6/WO3 material and forms well contact Bi2WO6/WO3 heterojunctions, which increase the maximum reaction rate of CO2 photoreduction to 8.2 times under the simulated light, and the hydrocarbon yield under the real concentrating solar light achieves thousands of μmol·gcata−1. The reason for the high activity is attributed to the direct Z-scheme effect of Bi2WO6/WO3 heterojunctions and the photothermal effect during the course. These findings highlight the utilization of solar energy in CO2 photoreduction and open avenues for the rational design of highly efficient photocatalysts.

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Structural characterization of light-induced crystal growth in Se98Sb2 chalcogenide glass

Cited by 4 publications

References 35 publications

Improved thermal stability of antimony‐doped amorphous selenium film for X‐ray flat‐panel detectors

Improved thermal stability of antimony‐doped amorphous selenium film for X‐ray flat‐panel detectors

Laser-induced persistent photo-dielectric effects in Se–Te–Sn–Cd chalcogenide glassy semiconductors (STSC ChGs)

In Situ Formation of Z-Scheme Bi2WO6/WO3 Heterojunctions for Gas-Phase CO2 Photoreduction with H2O by Photohydrothermal Treatment

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