Metal-Insulator-Semiconductor Anodes for Ultrastable and Site-Selective Upconversion Photoinduced Electrochemiluminescence - Foton - Fonctions Optiques pour les Technologies de l'informatiON Accéder directement au contenu
Article Dans Une Revue Angewandte Chemie International Edition Année : 2022

Metal-Insulator-Semiconductor Anodes for Ultrastable and Site-Selective Upconversion Photoinduced Electrochemiluminescence

Résumé

Photoinduced electrochemiluminescence (PECL) allows the electrochemically assisted conversion of low-energy photons into high-energy photons at an electrode surface. This concept is expected to have important implications, however, it is dramatically limited by the stability of the surface, impeding future developments. Here, a series of metal-insulator-semiconductor (MIS) junctions, using photoactive n-type Si (n-Si) as a light absorber covered by a few-nanometer-thick protective SiOx/metal (SiOx/M, with M=Ru, Pt, and Ir) overlayers are investigated for upconversion PECL of the model co-reactant system involving the simultaneous oxidation of tris(bipyridine)ruthenium(II) and tri-n-propylamine. We show that n-Si/SiOx/Pt and n-Si/SiOx/Ir exhibit high photovoltages and record stabilities in operation (35 h for n-Si/SiOx/Ir) for the generation of intense PECL with an anti-Stokes shift of 218 nm. We also demonstrate that these surfaces can be employed for spatially localized PECL. These unprecedented performances are extremely promising for future applications of PECL.
Fichier principal
Vignette du fichier
Zhao et al - 2022 - Metal-Insulator-Semiconductor Anodes for Ultrastable.pdf (1.41 Mo) Télécharger le fichier
Zhao_anie202201865-sup-0001-misc_information.pdf (2.12 Mo) Télécharger le fichier
Zhao_anie202201865-sup-0001-siteselectivepecl.mp4 (1.37 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03657525 , version 1 (17-06-2022)

Identifiants

Citer

Yiran Zhao, Julie Descamps, Soraya Ababou-Girard, Jean-Francois Bergamini, Lionel Santinacci, et al.. Metal-Insulator-Semiconductor Anodes for Ultrastable and Site-Selective Upconversion Photoinduced Electrochemiluminescence. Angewandte Chemie International Edition, 2022, 61 (20), pp.e202201865. ⟨10.1002/anie.202201865⟩. ⟨hal-03657525⟩
135 Consultations
213 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More