Phase-change perovskite metasurfaces for dynamic color tuning
Tian Jingyi
(Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 21 Nanyang Link, Singapore63737, Singapore)
Cortecchia Daniele
(Centre for Nano Science and Technology (CNST@PoliMi), Istituto Italiano di Tecnologia, Milan20133, Italy)
Wang Yutao
(Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 21 Nanyang Link, Singapore63737, Singapore)
Liu Hailong
(Institute of Materials Research and Engineering Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Singapore138634, Singapore)
Feltri Elena
(Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 21 Nanyang Link, Singapore63737, Singapore)
Liu Hong
(Institute of Materials Research and Engineering Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Singapore138634, Singapore)
Adamo Giorgio
(Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 21 Nanyang Link, Singapore63737, Singapore)
Soci Cesare
(Centre for Disruptive Photonic Technologies, TPI, Nanyang Technological University, 21 Nanyang Link, Singapore63737, Singapore)
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.
Tian Jingyi, Cortecchia Daniele, Wang Yutao, et al. (2022). "Phase-change perovskite metasurfaces for dynamic color tuning". Nanophotonics. https://doi.org/10.1515/nanoph-2022-0143