PbSe colloidal quantum dot based array Hall element and preparation method thereof

Abstract

The invention relates to a novel structured PbSe colloidal quantum dot based array Hall element and preparation method thereof. The PbSe colloidal quantum dot based array Hall element is small and high in flexibility, can be bent optionally and the like. A plurality of PbSe colloidal quantum dot sensing units are serially connected and are arranged in array on a flexible substrate. One end of each PbSe colloidal quantum dot sensing unit is provided with a current input end electrode. The other end of each PbSe colloidal quantum dot sensing unit is provided with a current output end electrode. Signals of each PbSe colloidal quantum dot sensing unit are output through a signal output electrode I of each PbSe colloidal quantum dot sensing unit. The signal output electrode I and a signal output electrode II of PbSe colloidal quantum dot sensing unit are integrally distributed and are connected with a signal output end port of each PbSe colloidal quantum dot sensing unit. The preparation method of the PbSe colloidal quantum dot sensing units includes: preparing a single PbSe colloidal quantum dot sensing unit 8, evaporating the signal output electrode I and the signal output electrode II, plating a protective layer on the signal output electrode I and the signal output electrode II, and evaporating the current input end electrode and the current output end electrode.

Description

technical field [0001] The invention relates to a novel structure array Hall element based on PbSe colloidal quantum dots and a manufacturing method thereof. This Hall element uses PbSe colloidal quantum dot material, arranged in an array, and has the characteristics of good flexibility. It has the advantages of small structure, arbitrary bending and high sensitivity. Background technique [0002] The Hall element is a magnetic sensitive element that performs magnetoelectric conversion according to the Hall effect. It has the advantages of sensitivity to magnetic field, simple structure, small size, wide frequency response, large output voltage change and long service life, so it is widely used in electromagnetic measurement, non-electrical measurement, automatic control, computing and communication devices and other fields. [0003] At present, the material of the Hall element is mostly semiconductor materials such as germanium, silicon, gallium arsenide, indium arsenide,...

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Problems solved by technology

[0005] After searching, it is found that there is no report on the array Hall element in my country that uses PbSe colloidal quantum dots as a sensitive material and is integrated on a flexible substrate.

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