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One‐Dimensional Cuprous Selenide Nanostructures with Switchable Plasmonic and Super‐ionic Phase Attributes
Author(s) -
Cho KiHyun,
Heo Jaeyoung,
Sung YunMo,
Jain Prashant K.
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201902290
Subject(s) - selenide , ionic bonding , nanowire , materials science , nanostructure , plasmon , nanotechnology , nanocrystal , surface plasmon resonance , phase (matter) , cadmium selenide , phase transition , ion , optoelectronics , chemical physics , nanoparticle , chemistry , quantum dot , condensed matter physics , physics , organic chemistry , selenium , metallurgy
Cuprous selenide nanocrystals have hallmark attributes, especially tunable localized surface plasmon resonances (LSPRs) and super‐ionic behavior. These attributes of cuprous selenide are now integrated with a one‐dimensional morphology. Essentially, Cu 2 Se nanowires (NWs) of micrometer‐scale lengths and about 10 nm diameter are prepared. The NWs exhibit a super‐ionic phase that is stable at temperatures lower than in the bulk, owing to compressive lattice strain along the radial dimension of the NWs. The NWs can be switched between oxidized and reduced forms, which have contrasting phase transition and LSPR characteristics. This work thus makes available switchable, one‐dimensional waveguides and ion‐conducting channels.