Multiple Exciton Generation in 3D-Ordered Networks of Ge Quantum Wires in Alumina Matrix Article Swipe
Marija Tkalčević
,
Denis Boršćak
,
Ivana Periša
,
Iva Bogdanović Radović
,
Iva Šarić
,
M. Petravić
,
Sigrid Bernstorff
,
Maja Mičetić
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/ma15155353
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/ma15155353
Thin films containing 3D-ordered semiconductor quantum wires offer a great tool to improve the properties of photosensitive devices. In the present work, we investigate the photo-generated current in thin films consisting of an interconnected 3D-ordered network of Ge quantum wires in an alumina matrix. The films are prepared using nitrogen-assisted magnetron sputtering co-deposition of Ge and Al2O3. We demonstrate a strong photocurrent generation in the films, much stronger than in similar films containing Ge quantum dots. The enhanced photocurrent generation is the consequence of the multiple exciton generation and the films’ specific structure that allows for efficient carrier transport. Thin film with the largest nitrogen content showed enhanced performance compared to other thin films with 1.6 excitons created after absorption of a single photon at an energy nearly equal to the double bandgap value. The bandgap value depends on the geometrical properties of the quantum wires, and it is close to the maximum of the solar irradiance in this case. In addition, we show that the multiple exciton generation is the most pronounced at the photon energy values equal to multiple values of the thin film bandgap.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/ma15155353
- https://www.mdpi.com/1996-1944/15/15/5353/pdf?version=1659590694
- OA Status
- gold
- Cited By
- 6
- References
- 28
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4289711523
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4289711523Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/ma15155353Digital Object Identifier
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Multiple Exciton Generation in 3D-Ordered Networks of Ge Quantum Wires in Alumina MatrixWork title
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-08-03Full publication date if available
- Authors
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Marija Tkalčević, Denis Boršćak, Ivana Periša, Iva Bogdanović Radović, Iva Šarić, M. Petravić, Sigrid Bernstorff, Maja MičetićList of authors in order
- Landing page
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https://doi.org/10.3390/ma15155353Publisher landing page
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https://www.mdpi.com/1996-1944/15/15/5353/pdf?version=1659590694Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://www.mdpi.com/1996-1944/15/15/5353/pdf?version=1659590694Direct OA link when available
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Exciton, Materials science, Matrix (chemical analysis), Quantum, Condensed matter physics, Quantum mechanics, Physics, Composite materialTop concepts (fields/topics) attached by OpenAlex
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6Total citation count in OpenAlex
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2025: 2, 2024: 1, 2023: 2, 2022: 1Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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