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by Xi Min, Zhao Weiwei, Hefei Institutes of Physical Science, Chinese Academy of Sciences
In this study, researchers used the Kirkendall reaction to synthesize hollow copper sulfide (Cu27S24) nanocages. Compared to traditional noble metal plasmonic nanomaterials (gold or silver), which shows plasmon photothermal phenomena given the condition of illumination with visible light, Cu27S24 nanocages as semiconducting material that have lower interband transition and scattering loss. Besides, the hollow nanocage structure can further expand the available light harvesting range and further improve the light-to-heat conversion efficiency.
The researchers combined first-principles calculations and finite element method (FEM) simulations to fit the optical properties of the nanocage, and predicted its excellent solar photothermal performance. Based on the evaluation results, solar photothermal nanoink and nanofilm were further developed. This work preliminarily proves that the hollow copper sulfide nanocage has broad prospects in plasmonic photothermal applications.
Min Xi et al, Plasmonic Cu27S24 nanocages for novel solar photothermal nanoink and nanofilm, Nano Research (2021). DOI: 10.1007/s12274-021-3880-3
Hefei Institutes of Physical Science, Chinese Academy of Sciences
Novel plasmonic solar thermal materials developed to reserve sun heat (2021, November 5)
retrieved 8 November 2021
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