Journal article
Surface Plasmon Modulation in Cu3–xP Nanocrystals
Jiyuan Yu, Zifei Chen, Heyou Zhang, James A Hutchison, Paul Mulvaney, Arun Ashokan
NANO LETTERS | AMER CHEMICAL SOC | Published : 2024
Abstract
We demonstrate modulation of the surface plasmon resonance in nonstoichiometric copper phosphide nanocrystals using spectroelectrochemical methods. Application of an anodic potential resulted in a blue-shift of the surface plasmon resonance and an incremental increase in its extinction coefficient. Conversely, upon application of a cathodic potential, the surface plasmon band red-shifted and reduced in intensity. These changes were found to be reversible over multiple cycles of anodic and cathodic potential steps. We also discuss how the postsynthetic ligand treatment impacts the surface plasmon peak and the structure of Cu3-xP nanocrystals. For example, the addition of alkylthiols resulted ..
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Awarded by Study Melbourne Research partnerships - Victorian Government through Study Melbourne
Awarded by University of Melbourne for a research training program (RTP) scholarship
Funding Acknowledgements
A.A. and J.A.H. acknowledge the Study Melbourne Research partnerships (SMRP) program funded by the Victorian Government through Study Melbourne. J.A.H. acknowledges an Australian Research Council (ARC) Future Fellowship award (FT180100295). Z.C. thanks Australian Government and the University of Melbourne for a research training program (RTP) scholarship. This work was supported by ARC Grant CE170100026. The authors thank the Ian Holmes Imaging Centre at the Bio21 Institute for electron imaging facility. We thank Dr. Andrea Crovetto for generously providing us with the dielectric constants measured for bulk Cu3-x P thin films. A.A. acknowledges useful discussions with Dr. K. Sandeep and Dr. E. Krishnan Vishnu.