Tian, J., Cortecchia, D., Wang, Y., Liu, H., Feltri, E., Liu, H., Adamo, G., & Soci, C. (2022). Phase-change perovskite metasurfaces for dynamic color tuning. Nanophotonics, 11(17), 3961–3968. https://doi.org/10.1515/nanoph-2022-0143
Halide perovskite metasurfaces are attracting increasing interest for applications in light-emitting and display technologies. To access the wide range of colors required for these applications, the main mechanism exploited thus far has been chemical engineering of the perovskite compounds – this constitutes a significant limitation for the dynamic switching of optical response desirable in actual devices. Here we demonstrate polarization-dependent, dynamic control of structural color and emission wavelength in an all-dielectric phase-change halide perovskite nanograting metasurface, by temperature tuning. This is underpinned by the significant change in the perovskite optical constants which accompanies its phase-transition around room temperature. The functionalities demonstrated in our work bearing potential for applications in light-emitting devices, displays and spatial-light-modulators.
Attribution 4.0 International (CC BY 4.0)
This research / project is supported by the A*STAR - AME programmatic
Grant Reference no. : A18A7b0058
This research / project is supported by the Ministry of Education - Tier 3 grant
Grant Reference no. : MOE2016-T3-1-006