Abstract
Photo-induced charge carrier dynamics and transient interfacial fields at the interface between N3 polypyridine complexes and films of nanocrystalline ZnO are probed by picosecond time-resolved X-ray photoelectron spectroscopy.
Highlights
Interfacial charge transfer is a fundamental component of natural and engineered processes ranging from biological function to catalytic applications
Exploiting the elemental site specificity and chemical sensitivity of XPS, we track the evolution of interfacial electronic configurations from both sides of the N3-ZnO interface by monitoring the C1s photoline associated with the dye molecule and the Zn3d line associated with the semiconductor substrate
The measurements give access to injection and recombination timescales as well as transient potential energy differences across the interface with atomic-scale site-sensitivity, providing a comprehensive picture of the fundamental dynamics that define the efficiency of the photoinduced processes
Summary
Interfacial charge transfer is a fundamental component of natural and engineered processes ranging from biological function to catalytic applications. We probe photoinduced chargetransfer dynamics in films of N3-sensitized ZnO using picosecond time-resolved X-ray photoelectron spectroscopy (tr-XPS). Exploiting the elemental site specificity and chemical sensitivity of XPS, we track the evolution of interfacial electronic configurations from both sides of the N3-ZnO interface by monitoring the C1s photoline associated with the dye molecule and the Zn3d line associated with the semiconductor substrate.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
