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Edinburgh Instruments Ltd.
A Techcomp Instruments Europe Co.
1 Bain Square
Kirkton Campus
Livingston EH54 7DQ
United Kingdom
Phone: +44 1506 425300
Fax: +44 1506 425320
Charge Carrier Recombination Dynamics of Semiconductor Photocatalyst
Author: Georgios Arnaoutakis, Massimo Cazzanelli, Zakaria El Koura, Antonio Miotello
Wednesday, November 29, 2017
Photocatalysis, the induction of chemical changes by absorption of light, is crucial for many environmental studies and sought for water splitting and hydrogen production
1,2, removal of pollutants
3,4, as well as artificial photosynthesis
5.
With this wide spread of applications, earth-abundant photo-catalysts are attracting extensive interest, especially based on anatase TiO
2 due to its abundance
6,8 and low toxicity
5,9.
Due to its wide bandgap at 3.2 eV, however, it is not a good absorber in the visible range. Viable routes to extend its absorption include doping with transition metals to induce defect states in the lattice and tune the bandgap towards the visible.
In this application note, by means of time-resolved photoluminescence spectroscopy, we study the dynamics of charge carriers in copper-nitrogen-titanium oxide (Cu-N-TiO
2).
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