Abstract
The photocurrent output of the C6H4NH2CuBr2I/TiO2 heterojunction photoelectrode in an aqueous solution is super stable even after 30 000 s. However, the photocurrent is extremely weak. Intensity-modulated photocurrent spectroscopy revealed that the electron transfer in the C6H4NH2CuBr2I/TiO2 photoelectrode without bias is not sufficiently fast to compete with the charge recombination process due to the short diffusion length (∼23 nm), resulting in a low photocurrent. The charge separation and charge transfer efficiency in the bulk of C6H4NH2CuBr2I could be significantly improved under a small reverse electric field (Er), resulting in an enhanced photocurrent.
Original language | English (US) |
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Pages (from-to) | 932-935 |
Number of pages | 4 |
Journal | Physical Chemistry Chemical Physics |
Volume | 25 |
Issue number | 2 |
DOIs | |
State | Published - Dec 5 2022 |
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry