Triboelectrification induced UV emission from plasmon discharge
triboelectrification, light emitting, plasma discharge, UV light, sterilization
UV is a high-energy electromagnetic radiation that has been widely used in industrial production and the scientific research domain. In this work, a deep UV light emission was obtained using triboelectrification induced plasma discharge without any extra power supply. By a mechanical friction between polymer and quartz glass, the triboelectric charges cause a changing electric field, which may bring plasma discharge of low pressure gas (Ar–Hg) and give out 253.7 nm irradiation. The UV light caused by continuous friction can excite a trichromatic phosphor and afford a bright white light emission. A UV sterilization experiment shows that ~98% of Escherichia coli can be killed in 30 min by UV irradiation, which reveals that a self-powered sterilization apparatus with good sterilization effect was fabricated. This work provides a novel design to fabricate a selfpowered UV light emitting device using low-frequency mechanical friction and realizes the coupling of triboelectrification and plasma luminescence, which may further expand the application of UV light in special circumstances.
Tsinghua University Press
Chang Bao Han,Chi Zhang,Jingjing Tian,Xiaohui Li,Limin Zhang,Zhou Li,Zhong Lin Wang, Triboelectrification induced UV emission from plasmon discharge. NanoRes.2015, 8(1): 219–226