Influence of Laser Wavelength in Simultaneous Patterning of Fluorinated Ethylene Propylene and Copper Electrode Surface Towards Performance Enhancement of Triboelectric Nanogenerator

Abstract

Triboelectric nanogenerators (TENGs) are promising cost‐effective energy harvesters useful to scavenge vibration or mechanical movements from various domains. Ranging from condition monitoring of machines to motion sensing of humans, its applications are enormous in the internet of things scenario. Enhancing the performance of small‐sized TENGs is of great demand, and pulsed laser‐assisted texturing is an efficient and proven method to enhance the output of energy harvesters. This work studies simultaneous laser patterning of fluorinated ethylene propylene (FEP) dielectric material and the underneath copper electrode with three different wavelengths (355, 532, and 1064 nm) of the Nd3+:YAG laser and the device's electrical performance is analyzed. The maximum enhancement is observed in the case of 355 nm laser‐assisted patterning on FEP and Cu electrode with a laser fluence of 10 J cm−2. The improvement is least in the case of 1064 nm laser‐assisted patterning. Laser patterning on the underlying electrode with this new approach is able to produce an enhancement in the TENG output. However, patterning on the FEP top surface is critical in the process.

Contact-electro-catalysis under natural and industrial conditions: mechanisms, strategies, and challenges

“…Light energy is determined by the wavelength and intensity, wherein the shorter the UV light wavelength 107 and the stronger the intensity, the greater the energy. 108 Therefore, Sun et al 106 used ETFE, PTFE, and FEP dielectric films as well as a Cu TENG to generate electricity for exploring the inhibitory effect of UV light and its intensity on electron transfer.…”