ZnO nanorod array/polyvinylcarbazole/graphene hybrid fiber-like ultraviolet photodetector and method based on interface optimization

Abstract

The invention discloses a zinc oxide nanorod array / polyvinyl carbazole / graphene hybridized fiber-shaped ultraviolet light detector based on interface optimization and a preparation method thereof. The preparation method comprises the following steps of using a fine metal wire as a substrate, growing a zinc oxide nanorod array at the surface of the ine metal wire in the vertical direction, uniformly covering the surface of the zinc oxide nanorod array with a polyvinyl carbazole thin layer, and coating the outer surface of the polyvinyl carbazole thin layer with a single layer of graphene thin film, wherein a fine sliver wire leading-out electrode is blended in the graphene thin film. The preparation method has the advantages that the problem of poor interface contact in the traditional fiber-shaped detector is solved, the surface-contact surface electrode is used for replacing the line-contact surface electrode, and the property of the detector is improved.

Description

technical field [0001] The invention relates to the technical field of ultraviolet detection, in particular to an interface-optimized zinc oxide nanorod array / polyvinylcarbazole (PVK) / graphene hybrid fiber-shaped ultraviolet light detector and a preparation method thereof. Background technique [0002] With the development of the modern electronic age, flexible and wearable electronic devices such as electronic skin and stretchable circuit devices have played an increasingly important role in our daily life. Because the fiber itself is light, flexible and easy to weave, fiber-shaped energy devices have been widely studied, including fiber-shaped supercapacitors, lithium batteries and solar cells, etc., but these energy devices are mainly for the corresponding functional devices. , such as display, lighting, monitoring and sensing, etc. Sensors are an important part of information transmission, and photodetectors, as a member of sensors, have been widely used in military det...

AI Technical Summary

Problems solved by technology

Therefore, flexible and weavable fiber-like detectors are also in urgent need of research, but the existing problems are also obvious, that is, the curved surface structure of the fiber increases the contact defects of the functional layer of the device, which greatly affects the performance of the device.

However, the traditional purely inorganic structural functional layer and the use of linear external electrodes make this defect more serious, which is derived from Ko et al. (Nanoscale, 2015, 7, 2735-421) and Zhang et al. 4544) can be seen from the existing research results

Therefore, there is an urgent need to develop a fiber-like ultraviolet light detection that can optimize the contact interface, and the existing technology has not yet used interface optimization to solve the problem of contact defects in fiber-shaped optoelectronic devices.

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