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Pregled bibliografske jedinice broj: 1087728

Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion


Basioli, Lovro; Sancho-Parramon, Jordi; Despoja, Vito; Fazinić, Stjepko; Bogdanović Radović, Iva; Božićević Mihalić, Iva; Salamon, Krešimir; Nekić, Nikolina; Ivanda, Mile; Dražić, Goran et al.
Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion // ACS applied nano materials, 3 (2020), 9; 8640-8650 doi:10.1021/acsanm.0c01333 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1087728 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion

Autori
Basioli, Lovro ; Sancho-Parramon, Jordi ; Despoja, Vito ; Fazinić, Stjepko ; Bogdanović Radović, Iva ; Božićević Mihalić, Iva ; Salamon, Krešimir ; Nekić, Nikolina ; Ivanda, Mile ; Dražić, Goran ; Bernstorff, Sigrid ; Aquilanti, Giuliana ; Mičetić, Maja

Izvornik
ACS applied nano materials (2574-0970) 3 (2020), 9; 8640-8650

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ge/metal core−shell nanoparticles ; self-assembly ; light harvesting ; field enhancement ; photocurrent ; plasmon resonance ; Ge quantum dot ; solar cells

Sažetak
A method to enhance the optoelectronic properties of thin films containing three-dimensional ordered germanium quantum dots (QDs) coated with metal shell (Al, Ta, and Ti) in alumina matrix is presented. The conditions for the achievement of self-assembled growth of the metal-coated Ge QDs by magnetron sputtering deposition are explored. The influence of the metal shell on the structural, optical, and optoelectronic properties is found to be radical and desirable. First, it reduces Ge oxidation. Second, it enhances overall absorption by an order of magnitude. Third, it enables manipulation of the absorption curve shape in two ways. The Ge absorption peak, useful for photoelectric conversion, can be tuned significantly via control of the Ge energy gap because of the quantum confinement effect. On the other hand, infrared absorption can be controlled by the amount of metal because the geometry of the system can enhance absorption in the core by excitation of plasmon resonances in the shell. The mentioned effects result in a high increase of the photocurrent and quantum efficiency of core–shell nanoparticles compared to simple Ge particles. The experiments are supported by theoretical predictions, showing that the intensity of the incident radiation is strongly amplified in the region around the metal–semiconductor interface upon the excitation of plasmon resonances, hence increasing the probability of photon absorption and, thus, of charge carrier generation in the photo-active material. Therefore, the presented materials are very promising for photoelectric devices.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
HRZZ-IP-2018-01-3633 - 3D mreže kompleksnih Ge-baziranih nanostruktura u staklima: svojstva i primjene (NetNano) (Mičetić, Maja, HRZZ - 2018-01) ( POIROT)

Ustanove:
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", Zagreb

Poveznice na cjeloviti tekst rada:

doi pubs.acs.org doi.org

Citiraj ovu publikaciju:

Basioli, Lovro; Sancho-Parramon, Jordi; Despoja, Vito; Fazinić, Stjepko; Bogdanović Radović, Iva; Božićević Mihalić, Iva; Salamon, Krešimir; Nekić, Nikolina; Ivanda, Mile; Dražić, Goran et al.
Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion // ACS applied nano materials, 3 (2020), 9; 8640-8650 doi:10.1021/acsanm.0c01333 (međunarodna recenzija, članak, znanstveni)
Basioli, L., Sancho-Parramon, J., Despoja, V., Fazinić, S., Bogdanović Radović, I., Božićević Mihalić, I., Salamon, K., Nekić, N., Ivanda, M. & Dražić, G. (2020) Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion. ACS applied nano materials, 3 (9), 8640-8650 doi:10.1021/acsanm.0c01333.
@article{article, author = {Basioli, Lovro and Sancho-Parramon, Jordi and Despoja, Vito and Fazini\'{c}, Stjepko and Bogdanovi\'{c} Radovi\'{c}, Iva and Bo\v{z}i\'{c}evi\'{c} Mihali\'{c}, Iva and Salamon, Kre\v{s}imir and Neki\'{c}, Nikolina and Ivanda, Mile and Dra\v{z}i\'{c}, Goran and Bernstorff, Sigrid and Aquilanti, Giuliana and Mi\v{c}eti\'{c}, Maja}, year = {2020}, pages = {8640-8650}, DOI = {10.1021/acsanm.0c01333}, keywords = {Ge/metal core−shell nanoparticles, self-assembly, light harvesting, field enhancement, photocurrent, plasmon resonance, Ge quantum dot, solar cells}, journal = {ACS applied nano materials}, doi = {10.1021/acsanm.0c01333}, volume = {3}, number = {9}, issn = {2574-0970}, title = {Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion}, keyword = {Ge/metal core−shell nanoparticles, self-assembly, light harvesting, field enhancement, photocurrent, plasmon resonance, Ge quantum dot, solar cells} }
@article{article, author = {Basioli, Lovro and Sancho-Parramon, Jordi and Despoja, Vito and Fazini\'{c}, Stjepko and Bogdanovi\'{c} Radovi\'{c}, Iva and Bo\v{z}i\'{c}evi\'{c} Mihali\'{c}, Iva and Salamon, Kre\v{s}imir and Neki\'{c}, Nikolina and Ivanda, Mile and Dra\v{z}i\'{c}, Goran and Bernstorff, Sigrid and Aquilanti, Giuliana and Mi\v{c}eti\'{c}, Maja}, year = {2020}, pages = {8640-8650}, DOI = {10.1021/acsanm.0c01333}, keywords = {Ge/metal core−shell nanoparticles, self-assembly, light harvesting, field enhancement, photocurrent, plasmon resonance, Ge quantum dot, solar cells}, journal = {ACS applied nano materials}, doi = {10.1021/acsanm.0c01333}, volume = {3}, number = {9}, issn = {2574-0970}, title = {Ge Quantum Dots Coated with Metal Shells (Al, Ta, and Ti) Embedded in Alumina Thin Films for Solar Energy Conversion}, keyword = {Ge/metal core−shell nanoparticles, self-assembly, light harvesting, field enhancement, photocurrent, plasmon resonance, Ge quantum dot, solar cells} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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