Figure 1| Preparation and characterization of Au@PAT-modified perovskite films and devices (IMAGE)
Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS
a, Addition of Au@PAT NPs (2 mg/mL) into the perovskite precursor solution and the corresponding images before and after doping. The inset shows the TEM micrograph of as-synthesized Au NPs coated with ~2 nm PAT. b, EDS mapping (in SEM mode) of Au in the Au@PAT-decorated perovskite film.Afterwards, the G-S algorithm is used to find the coding sequence for controlling the programmable metasurface such that its associated radiation beams can be focused toward the desirable spot. IM-CNN-2 processes microwave data to recognize the hand sign; and the human breathing is identified by the time-frequency analysis of microwave data. c, PL mappings of MAPbI₃ films measured under 532 nm excitation. Control: PAT-treated MAPbI₃. Target: Au@PAT-modified MAPbI₃. d, SNOM optical images showing the near field distribution profiles of control and target perovskite films. e, Nyquist plots of EIS characterization under dark and illumination at a bias of 0.8 V for MAPbI3-based control and target devices. f, tDOS for control and target MAPbI₃ perovskite devices in TAS analysis.
by Kai Yao, Siqi Li, Zhiliang Liu, Yiran Ying, Petr Dvořák, Linfeng Fei, Tomáš Šikola, Haitao Huang, Peter Nordlander, Alex K.-Y. Jen and Dangyuan Lei.
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