Spiro-MeOTAD/ZnO piezoelectric type nanogenerator and preparation method thereof

Abstract

The invention belongs to the technical field of nanogenerators, and relates to a Spiro-MeOTAD / ZnO piezoelectric type nanogenerator and a preparation method thereof. The structure of the nanogeneratorcomprises a zinc oxide nanowire array, a zinc oxide seed layer, Spiro-MeOTAD organic coating layers, a conductive substrate, an upper electrode, lead wires and an encapsulation layer, wherein the conductive substrate serves as a lower electrode of the generator, the zinc oxide nanowire array is grown on the conductive substrate covered with the zinc oxide seed layer, and the Spiro-MeOTAD organic coating layers cover the surfaces of zinc oxide nanowires to form PN junction structures; and the upper electrode is arranged above the nanowire array, the upper electrode and the conductive substrateare led out by means of the two lead wires as output ends of current and voltage, and finally the whole device is wrapped with the encapsulation layer. The PN junction piezoelectric type nanogenerators disclosed by the invention has the advantages of simple and compact structure and simple preparation process, and adopts a special mode to greatly improve the output performance.

Description

technical field [0001] The invention belongs to the technical field of nanogenerators, and relates to a Spiro-MeOTAD / ZnO piezoelectric nanogenerator and a preparation method thereof. The generator is an enhanced DC nanogenerator composed of an organic / inorganic heterojunction structure. Background technique [0002] Since the 1980s, nanotechnology has achieved unprecedented development and application in aerospace, biology, machinery, electronics and other fields. Among them, nanoelectronic devices have aroused great interest of researchers all over the world due to their small size, good performance, and high integration. With the vigorous development of nano-scale portable and wireless electronic devices, it is becoming more and more important to study the nano-scale power supply technology that provides energy for them. The nanogenerator based on zinc oxide nanowires is particularly remarkable. This research can convert the energy of mechanical vibration, air flow, water...

AI Technical Summary

Problems solved by technology

In order to solve the problems of complex preparation process, low power generation efficiency, easy short circuit of the device and leakage current of the traditional zinc oxide nanogenerator, we adopted a new type of organic semiconductor Spiro-MeOTAD to form a PN heterojunction structure with zinc oxide to enhance its performance.

Although Spiro-MeOTAD has been widely cited in the field of solar cells and LED manufacturing due to its high hole generation rate and mesoporous filling rate, the application of Spiro-MeOTAD in the field of ZnO nanogenerators is still blank.

Images