Comparative Study of Photocarrier Dynamics in CVD-deposited CuWO4, CuO, and WO3 Thin Films for Photoelectrocatalysis
| Autor: | Lukas Mai, Rainer Eichberger, Daniel Peeters, Dennis Friedrich, Anjana Devi, Radim Beranek, Sönke Müller, Dariusz Mitoraj, James Hirst, Oliver Mendoza Reyes, Alexander Sadlo |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Kinetics chemistry.chemical_element 02 engineering and technology Electronic structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper 0104 chemical sciences Semiconductor chemistry Chemical physics Femtosecond Physical and Theoretical Chemistry Thin film 0210 nano-technology Carrier dynamics business |
| Zdroj: | Zeitschrift für Physikalische Chemie. 234:699-717 |
| ISSN: | 2196-7156 0942-9352 |
| DOI: | 10.1515/zpch-2019-1485 |
| Popis: | The temporal evolution of photogenerated carriers in CuWO4, CuO and WO3 thin films deposited via a direct chemical vapor deposition approach was studied using time-resolved microwave conductivity and terahertz spectroscopy to obtain the photocarrier lifetime, mobility and diffusion length. The carrier transport properties of the films prepared by varying the copper-to-tungsten stoichiometry were compared and the results related to the performance of the compositions built into respective photoelectrochemical cells. Superior carrier mobility was observed for CuWO4 under frontside illumination. |
| Databáze: | OpenAIRE |
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