Details
| Original language | English |
|---|---|
| Article number | 2101712 |
| Journal | Advanced optical materials |
| Volume | 10 |
| Issue number | 1 |
| Early online date | 29 Oct 2021 |
| Publication status | Published - 7 Jan 2022 |
Abstract
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.
Keywords
- aerogels, charge carrier separation, hybrid-nanoparticle network, photoelectrochemistry, self-assembly
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Advanced optical materials, Vol. 10, No. 1, 2101712, 07.01.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Revealing the Effect of Nanoscopic Design on the Charge Carrier Separation Processes in Semiconductor‐Metal Nanoparticle Gel Networks
AU - Schlenkrich, Jakob
AU - Zámbó, Dániel
AU - Schlosser, Anja
AU - Rusch, Pascal
AU - Bigall, Nadja C.
N1 - Funding Information: J.S. and D.Z. contributed equally to this work. The authors would like to acknowledge the financial support of the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement 714429). Additionally, this work was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4‐1. A.S. is thankful for financial support from the Hannover School for Nanotechnology (hsn). Moreover, the authors thank Armin Feldhoff and Jürgen Caro for providing the SEM facility. Furthermore, the used TEM for the shown images was provided by the Laboratory of Nano and Quantum Engineering.
PY - 2022/1/7
Y1 - 2022/1/7
N2 - 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.
AB - 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.
KW - aerogels
KW - charge carrier separation
KW - hybrid-nanoparticle network
KW - photoelectrochemistry
KW - self-assembly
UR - http://www.scopus.com/inward/record.url?scp=85118208816&partnerID=8YFLogxK
U2 - 10.1002/adom.202101712
DO - 10.1002/adom.202101712
M3 - Article
VL - 10
JO - Advanced optical materials
JF - Advanced optical materials
SN - 2195-1071
IS - 1
M1 - 2101712
ER -