Work

Development of magnetically driven contactless piezoelectric nanogenerators utilizing ZnO nanowires with different shaped top electrodes

Year: 2024

Type: article

Abstract: In this research, ZnO nanorod (NR)-based contactless piezoelectric nanogenerators (C-PENGs) with pyramidal and zigzag-shaped top electrodes were fabricated. ZnO NRs with different aspect ratios were grown on a Si (100) wafer, which acts as the bottom electrode. Two different top electrode architectures, zigzag-trenched and pyramidal cavity, were used. Additionally, different work function metallic coatings, platinum and nickel (as a cheaper alternative to noble metals) were applied to the architecturally shaped surfaces to achieve a Schottky contact between the top and bottom electrodes. A magnetic field ranging from 3.5 Oe to 55 Oe with a frequency range between 0.5 and 2 Hz was applied to drive the nanogenerator. The results showed that a maximum output voltage of 75 mV and a maximum power density of 20.7 pW cm−2 were successfully generated. The measurement of output power densities revealed that C-PENGs are a promising candidate for future nanorobotics applications.

Source: Semiconductor Science and Technology

DOI: 10.1088/1361-6641/ad95b4

Authors: E F Ucar, A Ilbay, T Simsek, M B Kaynar, E Ozbay, S Ozcan

Institutions: Türkiye Enerji Nükleer ve Maden Araştırma Kurumu, Hacettepe University, Bilkent University

Language: English

Topic: Advanced Sensor and Energy Harvesting Materials

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: Ankara Universitesi, Bilkent Üniversitesi