Abstract
The surface effect of dielectric material is one of the important cornerstones for the performance parameters. Here, an “edge effect” model of the surface charge of tribodielectric material in the natural environment based on the semiconductor interface and surface theory is established for the first time, and a theoretical exploration of the surface charge distribution is carried out as well. The result indicates that the surface charge density at the center of the tribodielectric material is higher and gradually decreases towards the edges. By exploring the functional relationship between the surface charge density and the edge distance, the interrelation between the inner edge width, outer edge width, and nick distance and the output charge on the tribodielectric material can be achieved. Meanwhile, the output performance is a nearly 3-fold higher between the fully covered triboelectric nanogenerator (FC-TENG) and non-fully covered triboelectric nanogenerator (NFC-TENG) due to the “edge effect” of the tribodielectric material. Finally, the distribution of surface charge is intuitively demonstrated by the visual experiment. This work provides a deeper understanding of the charge distribution on the surface of tribodielectric materials, holding significant implications for enhancing the fabrication process of TENG and its commercialization and mass production.
Published Version
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