Optical sensor

Abstract

The invention relates to a sensor, and particularly to an optical sensor. The optical sensor comprises the components of a transparent conductive substrate, an electrode layer, an array layer, an organic-inorganic composite light emitting layer, an organic matter hole transportation layer and a metal anode, wherein the transparent conductive substrate, the electrode layer, the array layer, the organic-inorganic composite light emitting layer, the organic matter hole transportation layer and the metal anode are successively arranged from bottom to top. The transparent conductive substrate is ITO conductive glass or an ITO conductive film plated PET. The electrode layer is made of platinum. The array layer is composed of cadmium oxide nano wires. The organic-inorganic composite light emitting layer is formed through filling organic-inorganic composite light emitting solution between the cadmium oxide nano wires of the array layer and the top of the array layer in a solution of standing and spin coating. The organic matter hole transportation layer is prepared in a solution of standing and spin-coating and is high-molecular polymer aqueous solution which is composed of poly(3,4)- ethylenedioxythiophene and polystyrene sulfonate. The optical sensor has advantages of greatly reducing difficulty in assembling the optical sensor, saving time and labor. The sensitivity of the prepared optical sensor is 5-8 times of that of a traditional material and is greatly improved.

Description

technical field [0001] The present invention relates to a sensor, and more particularly, to a light sensor. Background technique [0002] Semiconductor nanowires (NWS) possess unique electrical, optical, and mechanical properties due to their single-crystal structure and tunable atomic composition and size. One-dimensional II–VI metal-semiconductor array substrates have attracted increasing attention due to their potential applications in field emission, solar cells, sensors, lasers, and solar cells. One-dimensional nanowires are similar in shape to carbon nanotubes, and have good photoelectric properties and the possibility of synthesizing multiple components. Compared with the traditional top-down synthesis method, one-dimensional nanowires can use the bottom-up method to synthesize and control their one-dimensional nanostructure, so it has the possibility to prepare highly integrated devices and even present new concept devices. [0003] Cadmium oxide is a typical II–VI...

AI Technical Summary

Problems solved by technology

In existing reports, the composition of photosensors is mostly based on nano-film materials. Although this material has good photostability, its energy conversion efficiency is low and its spectral response is poor.

At present, there are few reports on photosensors based on nanowire nanomaterials, and even fewer reports on high-performance photosensors based on cadmium oxide nanowires

In addition, in traditional photosensors, before the assembly of photoresponsive nanomaterials, complex processing is required, including their separation from the substrate and diffusion in appropriate solvents. It is impossible to realize large-scale fabrication of photosensor devices based on nanomaterials

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