Harvesting microwave energy using pyroelectricity of nanostructured graphene/zirconium-doped hafnium oxide ferroelectric heterostructures. (6th March 2023)

• Record Type: Journal Article
• Authors: Dragoman, Mircea; Aldrigo, Martino; Dinescu, Adrian; Vasilache, Dan; Iordanescu, Sergiu; Dragoman, Daniela; Laudadio, Emiliano; Pavoni, Eleonora
• Is Part Of: Nanotechnology. Volume 34:Number 20(2023)
• Publication Date: 2023-03-06
• Subjects: energy harvesting -- ferroelectrics -- graphene -- hafnium oxide -- heterostructures -- microwaves -- pyroelectricity; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/acbcd9
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: In this work, we present the design, atomistic/circuit/electromagnetic simulations, and the experimental results for graphene monolayer/zirconium-doped hafnium oxide (HfZrO) ultra-thin ferroelectric-based field effect transistors fabricated at the wafer scale, regarding the pyroelectricity generation directly from microwave signals, at room temperature and below it, namely at 218 K and at 100 K. The transistors work like energy harvesters, i.e. they collect low-power microwave energy and transform it into DC voltages with a maximum amplitude between 20 and 30 mV. The same devices function as microwave detectors in the band 1–10.4 GHz and at very low input power levels not exceeding 80 μ W when they are biased by using a drain voltage, with average responsivity values in the range 200–400 mV mW −1 .