Work

Dynamics of photogenerated holes in nanocrystalline α-Fe 2 O 3 electrodes for water oxidation probed by transient absorption spectroscopy

Year: 2010

Type: article

Abstract: Transient absorption spectroscopy on the μs-s time scale is used to monitor the yield and decay dynamics of photogenerated holes in nanocrystalline hematite photoanodes. In the absence of a positive applied bias, these holes are observed to undergo rapid electron-hole recombination. The application of a positive bias results in the generation of long-lived (3 ± 1 s lifetime) photoholes.

Source: Chemical Communications

DOI: 10.1039/c0cc03627g