Relevant bibliographies by topics / Photodiffusion

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Photodiffusion'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Photodiffusion"

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Sakaguchi, Yoshifumi, Takayasu Hanashima, Al-Amin Ahmed Simon, and Maria Mitkova. "Silver photodiffusion into amorphous Ge chalcogenides." European Physical Journal Applied Physics 90, no. 3 (June 2020): 30101. http://dx.doi.org/10.1051/epjap/2020190368.

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Silver photodiffusion into amorphous chalcogenides involves the movement of ions controlled by a UV-visible light illumination, and has potential application to memory devices. Understanding the kinetics of this phenomenon will expand the range of possible applications. Herein, we report the excitation photon energy dependence of the silver photodiffusion kinetics in Ag/amorphous Ge20S80/Si substrate stacks, probed by neutron reflectivity using four light-emitting diodes with different peak wavelengths. Time-dependent changes were clearly observed in all three of the Ag/Ag-doped reaction/chalcogenide host layers, in terms of layer thickness, scattering length density, and roughness. Silver photodiffusion effectively occurred when the excitation photon energy was greater than the optical gap of the chalcogenide host material. Excitation of lone-pair electrons to anti-bonding states at the chalcogenide layer therefore appears to play a crucial role in triggering silver photodiffusion.
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Kluge, Günther, Andreas Thomas, Roland Klabes, Rainer Grötzchel, and Peter Süptitz. "Silver photodiffusion in amorphous GexSe100−x." Journal of Non-Crystalline Solids 124, no. 2-3 (October 1990): 186–93. http://dx.doi.org/10.1016/0022-3093(90)90262-k.

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3

Lakshmikumar, S. T. "A new model for photodiffusion of silver in amorphous chalcogenides." Journal of Non-Crystalline Solids 88, no. 2-3 (December 1986): 196–205. http://dx.doi.org/10.1016/s0022-3093(86)80021-7.

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Sakaguchi, Yoshifumi, Hidehito Asaoka, and Maria Mitkova. "Kinetics of silver photodiffusion into amorphous S-rich germanium sulphide – neutron and optical reflectivity." Pure and Applied Chemistry 91, no. 11 (November 26, 2019): 1821–35. http://dx.doi.org/10.1515/pac-2019-0217.

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Abstract Silver photodiffusion is one of the attractive photo-induced changes observed in amorphous chalcogenides. In this research, we focus on amorphous S-rich germanium sulphide and study the kinetics of the silver photodiffusion by neutron reflectivity, as well as optical reflectivity. It was found from the neutron reflectivity profiles with 30 s time resolution that silver dissolved into the germanium sulphide layer, forming a metastable reaction layer between the Ag and the germanium sulphide layers, within 2 min of light exposure. Subsequently, silver slowly diffused from the metastable reaction layer to the germanium sulphide host layer until the Ag concentration in both layers became identical, effectively forming one uniform layer; this took approximately 20 min. Optical reflectivity reveals the electronic band structure of the sample, complementary to neutron reflectivity. It was found from the optical reflectivity measurement that the metastable reaction layer was a metallic product. The product could be Ag8GeS6-like form, which is regarded as the combination of GeS2 and Ag2S, and whose backbone is composed of the GeS4 tetrahedral units and the S atoms. We attribute the first quick diffusion to the capture of Ag ions by the latter S atoms, which is realised by the S–S bond in amorphous S-rich germanium sulphide, while we attribute the second slow diffusion to the formation of the Ag–Ge–S network, in which Ag ions are captured by the former GeS4 tetrahedral units.
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Sakaguchi, Y., H. Asaoka, and M. Mitkova. "Silver photodiffusion into Ge-rich amorphous germanium sulfide—neutron reflectivity study." Journal of Applied Physics 122, no. 23 (December 21, 2017): 235105. http://dx.doi.org/10.1063/1.5000858.

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Sava, Florinel, Mihai Popescu, Adam Lőrinczi, and Alin Velea. "Possible mechanism of Ag photodiffusion in a-As2 S3 thin films." physica status solidi (b) 250, no. 5 (March 4, 2013): 999–1003. http://dx.doi.org/10.1002/pssb.201248517.

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Kovalskiy, A., H. Jain, and M. Mitkova. "Evolution of chemical structure during silver photodiffusion into chalcogenide glass thin films." Journal of Non-Crystalline Solids 355, no. 37-42 (October 2009): 1924–29. http://dx.doi.org/10.1016/j.jnoncrysol.2008.12.021.

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Mitkova, M., M. N. Kozicki, H. C. Kim, and T. L. Alford. "Thermal and photodiffusion of Ag in S-rich Ge–S amorphous films." Thin Solid Films 449, no. 1-2 (February 2004): 248–53. http://dx.doi.org/10.1016/j.tsf.2003.10.077.

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Sakaguchi, Yoshifumi, Hidehito Asaoka, Yuki Uozumi, Yukinobu Kawakita, Takayoshi Ito, Masato Kubota, Dai Yamazaki, Kazuhiko Soyama, Gaurav Sheoran, and Maria Mitkova. "Processes of silver photodiffusion into Ge-chalcogenide probed by neutron reflectivity technique." physica status solidi (a) 213, no. 7 (March 22, 2016): 1894–903. http://dx.doi.org/10.1002/pssa.201533037.

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Dzhafarov, T. D., M. Serin, D. Ören, B. Süngü, and M. S. Sadigov. "The effect of Ag photodiffusion on characteristics of Ag-CdS diode structures." Journal of Physics D: Applied Physics 32, no. 5 (January 1, 1999): L5—L8. http://dx.doi.org/10.1088/0022-3727/32/5/001.

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Dissertations / Theses on the topic "Photodiffusion"

1

Zella, Leo W. "Metal Ion Diusion in Thin Film Chalcogenides." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1467075804.

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Conference papers on the topic "Photodiffusion"

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Kumar, Sandeep, D. Singh, S. Sandhu, and R. Thangaraj. "Characterization of silver photodiffusion in Ge8Sb2Te11 thin films." In NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4917925.

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