Exploring Energy Transfer in a Metal/Perovskite Nanocrystal Antenna to Drive Photocatalysis
| Autor: | Mounir Mensi, Raffaella Buonsanti, Seryio Saris, Anna Loiudice |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
perovskite nanocrystals Composite number mechanism Nanotechnology 02 engineering and technology 010402 general chemistry 7. Clean energy 01 natural sciences Instability Chemical reaction Desorption distance-dependence General Materials Science Physical and Theoretical Chemistry Plasmon quantum-dot antennas h-2 generation light-emitting-diodes 021001 nanoscience & nanotechnology solar 0104 chemical sciences Nanocrystal Photocatalysis charge-transfer co2 photoluminescence 0210 nano-technology Excitation |
| Zdroj: | The journal of physical chemistry letters. 10(24) |
| ISSN: | 1948-7185 |
| Popis: | The use of all-inorganic perovskite nanocrystals (PeNCs) in photocatalytic systems has been limited because of their instability in polar solvents. Encapsulation of PeNCs in inorganic or polymeric matrices has been shown to be effective in overcoming such instability issues, yet studies on charge and energy extraction from these composite systems are still rare. Herein, we explore the capacity of CsPbBr3 PeNC/AlOx composite films to drive chemical reactions by coupling them to plasmonic AgNCs. AlOx is used both as a stabilizing layer and as a spacer to study distance dependent excitation energy transfer, which reveals a migration of energy from the PeNCs toward the AgNCs. We then utilize this pooled energy for a plasmon-mediated methylene blue desorption where we demonstrate enhancement effects of spectral and spatial absorption on the reaction outcome due to the coupling to PeNCs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|