Lead Halide Perovskite based Dynamic Metasurfaces
Abstract
Lead halide perovskites (MAPbX3) are known to have high refractive index and controllable bandgap, making them attractive for all-dielectric and tunable metasurfaces. Till now, perovskite metasurfaces have only been used in structural colors. More interesting meta-devices with 2{\pi} phase control are still absent. Here we experimentally demonstrate the MAPbX3 perovskite based metasurfaces with a complete control of phase shift in a reflection mode. By utilizing MAPbBr3 cut-wires as meta-atoms on a ground metal film, we find that the MAPbBr3 perovskite metasurface can produce full phase control from 0 to 2{\pi} and high reflection efficiency simultaneously. Consequently, high-efficiency polarization conversion, anomalous reflection and meta-hologram have been successfully produced. Most interestingly, the bandgap of MAPbX3 perovskite can be post-synthetically and reversibly tuned via anion exchange, providing a new approach to dynamically control of the all-dielectric meta-devices with novel function such as anomalous reflection and hologram et al.
Keywords
Cite
@article{arxiv.1904.01266,
title = {Lead Halide Perovskite based Dynamic Metasurfaces},
author = {Chen Zhang and Yuhan Wang and Yisheng Gao and Yubin Fan and Can Huang and Nan Zhang and Wenhong Yang and Qinghai Song and Shumin Xiao},
journal= {arXiv preprint arXiv:1904.01266},
year = {2019}
}