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

verfasst von

Jakob Schlenkrich, Dániel Zámbó, Anja Schlosser, Pascal Rusch, Nadja C. Bigall

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.

Organisationseinheit(en)

AG Funktionale Nanostrukturen aus assemblierten kolloidalen Nanopartikeln
Institut für Physikalische Chemie und Elektrochemie
AG Katalyse und Membranen
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme

Typ

Artikel

Journal

Advanced optical materials

Band

10

ISSN

2195-1071

Publikationsdatum

07.01.2022

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektronische, optische und magnetische Materialien, Atom- und Molekularphysik sowie Optik

Elektronische Version(en)

https://doi.org/10.1002/adom.202101712 (Zugang: Offen)