Revealing the Effect of Nanoscopic Design on the Charge Carrier Separation Processes in Semiconductor-Metal Nanoparticle Gel Networks

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Schlenkrich, J.; Zámbó, D.; Schlosser, A.; Rusch, P.; Bigall, N.C.: Revealing the Effect of Nanoscopic Design on the Charge Carrier Separation Processes in Semiconductor-Metal Nanoparticle Gel Networks. In: Advanced Optical Materials 10 (2022), Nr. 1, 2101712. DOI: https://doi.org/10.1002/adom.202101712

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Sum total of downloads: 38




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In this paper, it is shown that the nanoscopic design of combining semiconductors and noble metals has a direct impact on the macroscopic (electrochemical) properties of their assembled, hyperbranched, macroscopic gel networks. Controlled and arbitrary deposition of gold domains on CdSe/CdS nanorods leads to tipped and randomly decorated heteroparticles, respectively. Structural and optical properties of the gel networks depend upon assembling the hybrid particles by means of oxidative or ionic routes. Additionally, the impact of different building block designs on the charge carrier separation processes is investigated from spectroelectrochemical point of view. A more efficient charge carrier separation is revealed in the tipped design manifesting in higher negative photocurrent efficiencies compared to the arbitrary decoration, where the charge recombination processes are more remarkable. This work sheds light on the importance of the nanostructuring on the spectroelectrochemical properties at the macroscale paving the way towards their use in photochemical reactions.
License of this version: CC BY-NC 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2022
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 19 50.00%
2 image of flag of United States United States 8 21.05%
3 image of flag of Portugal Portugal 2 5.26%
4 image of flag of United Kingdom United Kingdom 2 5.26%
5 image of flag of Spain Spain 2 5.26%
6 image of flag of China China 2 5.26%
7 image of flag of Vietnam Vietnam 1 2.63%
8 image of flag of Russian Federation Russian Federation 1 2.63%
9 image of flag of Indonesia Indonesia 1 2.63%

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