Dynamic Tuning of Gap Plasmon Resonances Using a Solid-State Electrochromic Device
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
- Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Plasmonic antennas and metasurfaces can effectively control light–matter interactions, and this facilitates a deterministic design of optical materials properties, including structural color. However, these optical properties are generally fixed after synthesis and fabrication, while many modern-day optics applications require active, low-power, and nonvolatile tuning. These needs have spurred broad research activities aimed at identifying materials and resonant structures capable of achieving large, dynamic changes in optical properties, especially in the challenging visible spectral range. In this work, we demonstrate dynamic tuning of polarization-dependent gap plasmon resonators that contain the electrochromic oxide WO3. Its refractive index in the visible changes continuously from n = 2.1 to 1.9 upon electrochemical lithium insertion and removal in a solid-state device. By incorporating WO3 into a gap plasmon resonator, the resonant wavelength can be shifted continuously and reversibly by up to 58 nm with less than 2 V electrochemical bias voltage. Lastly, the resonator can remain in a tuned state for tens of minutes under open circuit conditions.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1570265
- Report Number(s):
- SAND--2019-11177J; 679791
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 11 Vol. 19; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Simultaneously enabling dynamic transparency control and electrical energy storage via electrochromism
|
journal | January 2020 |
Similar Records
Dual-Band Electrochromism in Hydrous Tungsten Oxide
Nanostructured electrochromic smart windows: traditional materials and NIR-selective plasmonic nanocrystals