A Versatile Route to Assemble Semiconductor Nanoparticles into Functional Aerogels by Means of Trivalent Cations

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dc.identifier.uri http://dx.doi.org/10.15488/9751
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/9807
dc.contributor.author Zámbó, Dániel ger
dc.contributor.author Schlosser, Anja ger
dc.contributor.author Rusch, Pascal ger
dc.contributor.author Lübkemann, Franziska ger
dc.contributor.author Koch, Julian ger
dc.contributor.author Pfnür, Herbert ger
dc.contributor.author Bigall, Nadja C. ger
dc.date.accessioned 2020-03-25T16:24:11Z
dc.date.available 2020-03-25T16:24:11Z
dc.date.issued 2020
dc.identifier.citation Zámbó, D. et al.: A Versatile Route to Assemble Semiconductor Nanoparticles into Functional Aerogels by Means of Trivalent Cations. In: Small (2020), 1906934. DOI: https://doi.org/10.1002/smll.201906934 ger
dc.description.abstract 3D nanoparticle assemblies offer a unique platform to enhance and extend the functionality and optical/electrical properties of individual nanoparticles. Especially, a self-supported, voluminous, and porous macroscopic material built up from interconnected semiconductor nanoparticles provides new possibilities in the field of sensing, optoelectronics, and photovoltaics. Herein, a method is demonstrated for assembling semiconductor nanoparticle systems containing building blocks possessing different composition, size, shape, and surface ligands. The method is based on the controlled destabilization of the particles triggered by trivalent cations (Y3+, Yb3+, and Al3+). The effect of the cations is investigated via X-ray photoelectron spectroscopy. The macroscopic, self-supported aerogels consist of the hyperbranched network of interconnected CdSe/ CdS dot-in-rods, or CdSe/CdS as well as CdSe/CdTe core-crown nanoplatelets is used to demonstrate the versatility of the procedure. The non-oxidative assembly method takes place at room temperature without thermal activation in several hours and preserves the shape and the fluorescence of the building blocks. The assembled nanoparticle network provides longer exciton lifetimes with retained photoluminescence quantum yields, that make these nanostructured materials a perfect platform for novel multifunctional 3D networks in sensing. Various sets of photoelectrochemical measurements on the interconnected semiconductor nanorod structures also reveal the enhanced charge carrier separation. ger
dc.language.iso eng ger
dc.publisher Hoboken, NJ : Wiley
dc.relation.ispartofseries Small (2020) ger
dc.rights CC BY-NC 4.0 Unported ger
dc.rights.uri https://creativecommons.org/licenses/by-nc/4.0/ ger
dc.subject functional aerogels eng
dc.subject multifunctional 3D networks eng
dc.subject nanocrystals eng
dc.subject photoelectrochemical sensing eng
dc.subject solvogels eng
dc.subject semiconductor nanoparticles eng
dc.subject trivalent cations eng
dc.subject.ddc 530 | Physik ger
dc.title A Versatile Route to Assemble Semiconductor Nanoparticles into Functional Aerogels by Means of Trivalent Cations ger
dc.type article ger
dc.type Text ger
dc.relation.doi 10.1002/smll.201906934
dc.description.version publishedVersion ger
tib.accessRights frei zug�nglich ger

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