Proceedings of nanoGe Fall Meeting19 (NFM19)
Publication date: 18th July 2019
The use of all-inorganic perovskite nanocrystals (PeNCs) in photocatalytic systems have been limited, compared to their utilization in lasing and LED applications, due to their instability in polar solvents. Encapsulation of PeNCs in inorganic and polymetric matrices has been shown to be effective in overcoming such instability issues, yet studies of charge/energy transfer extraction from these composite systems are lacking. In this contribution, we discuss our study on CsPbBr3/ AlOx nanocomposite films to drive chemical reaction by coupling them to plasmonic Ag NCs. AlOx in this case is used both as a stabilizing layer and as a spacer to study distance-dependent excitation energy transfer, which reveal a unidirectional migration of energy from the PeNCs towards the Ag NCs.1 We then utilize this pooled energy for plasmon-mediated methylene blue desorption reaction, where we demonstrate enhancement effects of spectral and spatial absorption on the reaction outcome, primarily due to coupling to the PeNCs.
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