Abstract
Vanadium dioxide (VO2) is a unique active plasmonic material due to its intrinsic metal-insulator transition, remaining less explored. Herein, we pioneer a method to tailor the VO2 surface plasmon by manipulating its atomic defects and establish a universal quantitative understanding based on seven representative defective VO2 systems. Record high tunability is achieved for the localized surface plasmon resonance (LSPR) energy (0.66-1.16 eV) and transition temperature range (40-100 °C). The Drude model and density functional theory reveal that the charge of cations plays a dominant role in the numbers of valence electrons to determine the free electron concentration. We further demonstrate their superior performances in extensive unconventional plasmonic applications including energy-saving smart windows, wearable camouflage devices, and encryption inks. This journal is
Original language | English |
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Pages (from-to) | 1700-1710 |
Number of pages | 11 |
Journal | Materials Horizons |
Volume | 8 |
Issue number | 6 |
Early online date | 14 May 2021 |
DOIs | |
Publication status | Published - 1 Jun 2021 |
Externally published | Yes |