Inverse piezoelectric nano semiconductor generator

Abstract

The invention discloses an inverse piezoelectric nano semiconductor generator, which comprises a semiconductor nano-wire array, a metal sheet, a shell and an external circuit. The nano-wire array consists of oriented semiconductor nano-wires with inverse piezoelectricity and polarization characteristics and is grown on a corresponding conductive metal substrate; the metal sheet is tightly contacted with the other side of the semiconductor nano-wire array; and the semiconductor nano-wire array and the metal sheet are directly fixed in the shell through a suspension spring system after up-and-down laminated contact and connected with the external circuit. When spatial electromagnetic radiation signals are acted on the nano-wires, the nano-wires generate inverse piezoelectricity and polarization phenomenon, and positive and negative charges are accumulated on the surfaces of the nano-wires. Meanwhile, Schottky contact effect causing unidirectional conduction of current is formed between the contact faces of a metal and an N-type semiconductor, and polarization charges on the surfaces of the nano-wires are directly output to the external circuit in a form of electronic current so as to finish energy conversion from electromagnetic radiation energy to electrical energy.

Description

technical field [0001] The invention relates to the technical fields of nanometer power generation, microelectromechanical machinery and power supply, and relates to an inverse piezoelectric nanometer semiconductor generator for converting electromagnetic radiation energy in space into electric energy. Background technique [0002] With the advent of the information age, people have more and more opportunities to use and contact various electronic instruments and electronic products in their work and daily life. Various household appliances, electronic equipment, office automation equipment, mobile communication equipment and other electrical devices only When they are in working use, they will radiate electromagnetic waves to their surroundings. If the human body is exposed to electromagnetic radiation doses exceeding the safe range for a long time, the cells will be killed or killed in a large area, which will have a very adverse effect on human health. . [0003] Space r...

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Problems solved by technology

However, under the action of strong external mechanical vibration force, the nanowires and metal needle tips of this nanogenerator will produce large mechanical deformation, which is prone to mechanical breakage of the nanowires and affects its service life. At the same time, the upper and lower nanometer The assembly mode that requires precise contact between the lines also makes the assembly and operation mechanism of this generator more demanding;

[0007] 3. In order to collect the piezoelectric polarization charge generated by the mechanical deformation of the semiconductor and form the unidirectional conduction effect of the current, the upper polarization charge collection unit of this nanogenerator needs to be plated with a layer of work function greater than that of the N-type ZnO semiconductor material. Functional Au or Pt and other precious metal materials, the motor manufacturing and assembly costs are relatively high;

[0008] 4. The output power and current intensity that the unit area device of this kind of nano generator can provide is still small, so that the scope of application of this kind of nano generator is limited to a certain extent

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