Piezoelectric potential-enhanced output and nonlinear response range for self-powered sensor on curved surface. (1st June 2022)

• Record Type: Journal Article
• Authors: Jia, Yanling; Zhang, Ke
• Is Part Of: Nano energy. Volume 96(2022)
• Publication Date: 2022-06-01
• Subjects: TENG -- Piezotronic effect -- Linear pressure sensing -- Self-powered -- Curved state; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2022.107103
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Triboelectric nanogenerator (TENG)-based dynamics sensors usually suffer from low output and nonlinear response (inconsistent sensitivity) in wider detection range, especially at curved state. Here, we investigated the influence of piezoelectric potential and dipole moment on electrical output of TENG by fabricating four modes of TENGs with different polarized PVDF and working modes. Moreover, piezoelectric potential can be utilized to tune the interfacial energy band structure by piezotronic effect, which significantly improves the sensing performance of TENG-based pressure sensor, achieving linear response and high sensitivity in a wider range. In application, such sensor is good at human-body monitoring, such as acoustic wave, pulse wave and respiratory wave. Graphical Abstract: ga1 Highlights: Piezoelectric potential enhanced output and linear response range for TENG-based dynamics sensors. TENG based on polarized materials in curved-contact state has high sensing ability than in vertical-contact state. Piezotronic effect can be utilized to tune the interfacial energy band structure, improveing the sensing performance. In application, such sensor is good at human-body monitoring in which they are installed on curved skin surface.