| Since humans entered the modern society,the consumption of fossil fuels has been gradually increasing in industrial production and manufacturing,which has caused serious energy crisis and environmental pollution around the world.Therefore,to solve these problems,it is urgent to capture clean and renewable energy sources from the environment.The earth’s atmosphere,oceans and rivers contain huge clean environmental energy.The mechanical energy contained in these fluids can be transformed into electrical energy through different energy capturing technologies to provide energy support in daily life,various microcomputer electronic systems and environmental monitoring sensors.Triboelectric nanogenrator（TENG）,with the features of light weight,low cost,easy to fabricate and a variety of material options,shows great advantages in the collection of distributed,disordered,low-frequency mechanical energy.Such technology is expected to free people from the dependence on conventional energy sources and has great potential for applications in micro-nano energy,self-powered sensing and blue energy.ZnS-based luminophores have a wide band gap（3.36 e V）,and under external electric field conditions,electrons and holes recombine and emit light.Their luminescence effect is independent of ambient atmosphere,temperature and humidity,making them one of the best materials for electroluminescence to date.In this thesis,we prepared the rotary freestanding TENG（RF-TENG）based on the rabbit furs to harvest wind energy,converting the wind energy into electrical energy.By combining with electroluminescent materials,the electroluminescent application of TENG was realized,and the related applications in the field of printing and packaging were discussed.The specific work points of the full text are as follows.（1）A rotary freestanding TENG composed of stator and rotor was prepared by using polytetrafluoroethylene,fluorinated ethylene propylene copolymer,polyimide and rabbit hair.The electrical output performance was systematically tested by adjusting the type of film material,the number of electrode grids and external excitation conditions.The maximum output current of the generator is about 98 μA.The maximum transferred charge is 670 n C,and a peak power of 40.98 m W and an average output power of 16.21 m W can be achieved under an external load of 100 MΩ.（2）The RF-TENG can power an array of more than 250 LEDs and can also be used Zns: Cu powder was prepared by combustion method.Through systematic characterization and testing,it is determined that the crystal structure of ZnS: Cu phosphor is not deformed,the surface morphology is uniform,the EL emission spectrum is about 510 nm,and the blue shift of emission peak occurs with increasing the external frequency.The prepared phosphor is spin coated on the ITO film,and a layer of conductive silver paste is scraped on the surface to prepare the electroluminescent device with a sandwich structure.Through the integration with TENG,it shows a good luminous effect,which can have important applications in the fields of warning and anticounterfeiting.（3）RF-TENG can supply power for an array of more than 250 LEDs,and can also be used as a self-powered power supply for temperature and humidity sensors and calculators,to realize the applications of self-powered sensing.This work shows that the TENG as a self-powered unit can provide driving energy for electroluminescent materials with ZnS: Cu as the main body.The devices prepared by combining their advantages and characteristics have potential application prospects in the fields of self-powered luminescence and packaging and printing. |
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