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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 489-492 |
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Yaghoobi A, Darbari S, Nabavi A. Fabrication of a Surface Acoustic Wave Photodetector. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :489-492
URL: http://opsi.ir/article-1-2099-en.html
URL: http://opsi.ir/article-1-2099-en.html
1- Faculty of Electrical and Computer Engineering, Tarbiat Modares University
Abstract: (1315 Views)
In this paper a surface acoustic wave photodetector is investigated. This photodetector works based on acousto-electric effect, which its resonance frequency and output signal amplitude change by exposure of blue light (450nm wavelength) with different powers. The resonance frequency is determined by Inter Digital Transducer (IDT) design. By applying AC signal to the input IDT, SAW can be created on the surface of piezo-electric layer. In this paper, ZnO is used as piezo-electric material and sensing layer. Resonance frequency of the fabricated device is about 89.6 MHz and its sensitivity is 0. 375 
with the approximate error of 4%.
with the approximate error of 4%.
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