| Title | High sensitive surface-acoustic-wave optical sensor based on two-dimensional perovskite |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Jiang, Tianyu, Ju, Zhenyi, Liu, Houfang, Yang, Fan, Tian, He, Fu, Jun, Ren, Tian-Ling |
| Conference Name | 2019 International Conference on IC Design and Technology (ICICDT) |
| Date Published | jun |
| Keywords | 2D perovskite, 2D perovskite exfoliation, 2D sheet exfoliation, acoustic coupling, acousto-optical devices, acoustooptic coupling optical sensor fabrication, dual-port SAW resonator, finite element analysis, finite element simulation, Human Behavior, optical couplers, optical fabrication, Optical resonators, optical sensor, Optical sensors, pubcrawl, Resiliency, Resonant frequency, Scalability, Sensitivity, Substrates, surface acoustic wave, surface acoustic wave optical sensor, surface acoustic wave resonators, surface acoustic wave sensors, Surface acoustic waves, surface-acoustic-wave optical sensor, Two dimensional displays, two-dimensional perovskite exfoliation, two-dimensional sensing layer, wavelength 532.0 nm |
| Abstract | Surface acoustic wave (SAW) optical sensor based on two-dimensional (2D) sensing layer can always provide extremely high sensitivity. As an attractive option, the application of exfoliated 2D perovskite on acousto-optic coupling optical sensor is investigated. In this work, exfoliated 2D (PEA)2PbI4 sheet was transferred as a sensing layer onto the delay area of a dual-port SAW resonator with resonant frequency 497 MHz. From the response under 532 nm laser with intensity of 0.9 mW/cm2, a largest frequency shift of 13.92 MHz was observed. The ultrahigh sensitivity up to 31.6 ppm/(mW/cm2) was calculated by experiment results. We also carried out theoretical analysis and finite element simulation of 3D model to demonstrate the mechanism and validity for optical sensing. The fabricated optical sensor expressed great potential for a variety of optical applications. |
| DOI | 10.1109/ICICDT.2019.8790835 |
| Citation Key | jiang_high_2019 |
High sensitive surface-acoustic-wave optical sensor based on two-dimensional perovskite