Time-resolved x-ray photoelectron spectroscopy techniques for real-time studies of interfacial charge transfer dynamics

2013 ◽  
Author(s):  
Andrey Shavorskiy ◽  
Amy Cordones ◽  
Josh Vura-Weis ◽  
Katrin Siefermann ◽  
Daniel Slaughter ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Real Time ◽  
Photoelectron Spectroscopy ◽  
Interfacial Charge Transfer ◽  
Time Resolved ◽  
X Ray ◽  
Charge Transfer Dynamics ◽  
Interfacial Charge

scholarly journals Oxygen Vacancy-Mediated Interfacial Charge Transfer of Au/ZnO Schottky Heterojunctions for Enhanced UV Photodegradation

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Zhufeng Shao ◽  
Hui Jia ◽  
Yufeng Zhang ◽  
Xiujuan Yang ◽  
Min Zhong ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Uv Light ◽  
Light Irradiation ◽  
Interesting Phenomenon ◽  
Local Surface Plasmon Resonance ◽  
Interfacial Charge Transfer ◽  
Time Resolved ◽  
Pl Spectra ◽  
Interfacial Charge

We intend to report an interesting phenomenon related to the different interfacial transfer processes between ellipsoidal-like ZnO (E-ZnO) and rod-like ZnO (R-ZnO) nanoheterojunctions witness by the nanosecond time-resolved transient photoluminescence (NTRT-PL) spectra. Fristly, E-ZnO and R-ZnO nanoarchitectures were fabricated via facilitating the electrochemical route; and then, they decorated it with dispersed Au nanoparticles (NPs) by the methods of ion-sputtering deposition, constituting Au/E-ZnO and Au/R-ZnO Schottky-heterojunction nanocomplex, which is characterized by SEM, XRD, Raman analysis, and UV-vis absorption spectra. Steady-state photoluminescence and NTRT-PL spectra of as-fabricated Au/E-ZnO and Au/R-ZnO nanocomposites were probed for interfacial charge transfer process under 266 nm femtosecond (fs) light irradiation. Simultaneously, a distinct diversification for the NTRT-PL spectra is observed, closely associating with oxygen vacancies (Vo), which is confirmed by X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) spectra. Furthermore, Au NPs act as an “annular bridge” and “transit depot” for interfacial charge transfer through local surface plasmon resonance (LSPR) effect and Schottky barrier, respectively, which is identified by NTRT-PL and time-resolved PL (TRPL) decay spectrum. Moreover, this mechanism is responsible for the enhanced photoelectrochemical (PEC) performances of methyl orange (MO) photodegradation under UV light irradiation.

scholarly journals Real-time probing of charge-transfer induced interfacial fields in a dye-semiconductor system using time-resolved XPS

2019 ◽  
Vol 205 ◽  
pp. 05021
Author(s):  
Johannes Mahl ◽  
Stefan Neppl ◽  
Friedrich Roth ◽  
Andrey Shavorskiy ◽  
Nils Huse ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Carrier ◽  
Photoelectron Spectroscopy ◽  
Carrier Dynamics ◽  
Time Resolved ◽  
X Ray ◽  
Charge Carrier Dynamics ◽  
Semiconductor System ◽  
Induced Charge ◽  
Polypyridine Complexes

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.

Interfacial charge transfer dynamics in small molecule-modified TiO 2 nanoparticles

2010 ◽  
Author(s):  
Shankar Varaganti ◽  
Edwin Mghangha ◽  
Jameel A. Hasan ◽  
Guda Ramakrishna
Keyword(s):  
Charge Transfer ◽  
Small Molecule ◽  
Interfacial Charge Transfer ◽  
Charge Transfer Dynamics ◽  
Interfacial Charge

Interfacial charge transfer dynamics in CdSe/dipole molecules coated quantum dot polymer blends

2010 ◽  
Vol 12 (40) ◽  
pp. 13047 ◽  
Author(s):  
Josep Albero ◽  
Eugenia Martínez-Ferrero ◽  
Daniela Iacopino ◽  
Anton Vidal-Ferran ◽  
Emilio Palomares
Keyword(s):  
Charge Transfer ◽  
Quantum Dot ◽  
Polymer Blends ◽  
Interfacial Charge Transfer ◽  
Charge Transfer Dynamics ◽  
Interfacial Charge
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