Skip to Main content Skip to Navigation
Journal articles

Luminescence amplification at BiVO4 photoanodes by photoinduced electrochemiluminescence

Abstract : Photoinduced electrochemiluminescence (PECL) combines semiconductor (SC) photoelectrochemistry with electrochemiluminescence (ECL). In PECL, the incident light is converted to a different wavelength by an electrochemical reaction at a SC photoelectrode and allows to trigger ECL at unprecedented low potentials. This concept has been employed so far to design up-conversion systems using Si or III-V SCs. Nevertheless, PECL strongly suffers from the photoelectrochemical instability of these low bandgap SCs. Here, we report for the first time an original light conversion strategy based on PECL of a luminol derivative (L-012) at BiVO 4 photoanodes in water. An incident light photo-excites simultaneously the L-012 fluorescence and the photoanode. However, the resulting fluorescence signal is surpassed by the PECL emission. In addition, we show that, with this system, PECL can be induced at a potential as low as -0.4 V for several hours and that it can be employed to finely tune L-012 luminescence. This remarkable light enhancement and the record low applied potential are promising for the design of new analytical strategies and light-addressable systems.
Document type :
Journal articles
Complete list of metadatas

Cited literature [29 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-02563400
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, May 19, 2020 - 4:18:17 PM
Last modification on : Wednesday, August 26, 2020 - 2:05:30 PM

File

Sojic et al-2020-Luminescence ...
Files produced by the author(s)

Identifiers

Citation

Neso Sojic, Jing Yu, Hiba Saada, Rawa Abdallah, Gabriel Loget. Luminescence amplification at BiVO4 photoanodes by photoinduced electrochemiluminescence. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2020, 59 (35), pp.15157-15160. ⟨10.1002/anie.202004634⟩. ⟨hal-02563400⟩

Share

Metrics

Record views

30

Files downloads

1