Abstract
Self-powered system that is interface-free is greatly desired for area-scalable application. Here we report a self-powered electroluminescent system that consists of a triboelectric generator (TEG) and a thin-film electroluminescent (TFEL) lamp. The TEG provides high-voltage alternating electric output, which fits in well with the needs of the TFEL lamp. Induced charges pumped onto the lamp by the TEG generate an electric field that is sufficient to excite luminescence without an electrical interface circuit. Through rational serial connection of multiple TFEL lamps, effective and area-scalable luminescence is realized. It is demonstrated that multiple types of TEGs are applicable to the self-powered system, indicating that the system can make use of diverse mechanical sources and thus has potentially broad applications in illumination, display, entertainment, indication, surveillance and many others.
Highlights
This work presents a self-powered electroluminescent system that is interface-free and area-scalable
It consists of two components, a triboelectric generator (TEG) and an alternating-current thin-film electroluminescent (ACTFEL) lamp
The square-shaped TEG shown in Fig. 1a relies on the contact mode (Detailed fabrication process is provided in Methods), in which reciprocating pressing force perpendicular to the device results in pulsed electric output voltage and current
Summary
This work presents a self-powered electroluminescent system that is interface-free and area-scalable. The system takes full advantage of the high voltage of the TEG by directly connecting it to an alternating-current thin-film electroluminescent (ACTFEL) lamp. Induced charges pumped onto the lamp by the TEG can provide an electric field that is sufficient to excite luminescence because the ACTFEL lamp is voltage-driven instead of current-driven[16]. Since both of the two components own a www.nature.com/scientificreports/. Through rational serial connection of multiple ACTFEL lamps, effective and area-scalable luminescence is realized. It is demonstrated that multiple types of TEGs that can harvest energy from diverse mechanical sources are applicable to the self-powered system, indicating potentially broad applications of the self-powered system in illumination, display, indication, surveillance and many others
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