Manipulating atomic defects in plasmonic vanadium dioxide for superior solar and thermal management

Citation:

Ke Y, Zhang B, Wang T, Zhong Y, Vu TD, Wang S, Liu Y, Magdassi S, Ye X, Zhao D, et al. Manipulating atomic defects in plasmonic vanadium dioxide for superior solar and thermal management. Materials Horizons [Internet]. 2021;8 (6) :1700 - 1700.

Date Published:

2021/06//

Abstract:

A pioneering perspective to modify the VO 2 LSPR at an atomic level, resulting in high tunability and great potential in several applications targeting light and thermal management. Vanadium dioxide (VO 2 ) is a unique active plasmonic material due to its intrinsic metal–insulator transition, remaining less explored. Herein, we pioneer a method to tailor the VO 2 surface plasmon by manipulating its atomic defects and establish a universal quantitative understanding based on seven representative defective VO 2 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.

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