A kind of preparation method of lead-catalyzed PBSE nanowire

Abstract

The invention relates to a preparation method of lead-catalyzed PbSe nanowires, comprising steps: step 1, coating a lead layer on a clean substrate surface: cutting the substrate, cleaning the substrate with lotion, and then drying; drying Put the finished substrate into the vacuum coating machine, add lead on the surface of the substrate, control the size of the evaporation current and the evaporation time, evaporate the lead pellets, and obtain a lead layer with a thickness meeting the requirements on the surface of the substrate; step 2, in the catalysis of lead Preparation of PbSe nanowires under the influence of The beneficial effects of the present invention are: the present invention can grow PbSe nanowires by replacing the corresponding growth source; simplify the preparation process and the demand for equipment; the gas phase environment is more controllable than the liquid phase environment, and the preparation process has high stability, which is beneficial to the preparation Large-area uniform samples; the invention can provide another way of thinking for the growth of nanowires; the invention can also change the thickness of the lead layer by controlling the time and current of lead plating, thereby controlling the specifications of the nanowires.

Description

technical field [0001] The invention belongs to the field of preparation of nanowires, in particular to a method for preparing lead-catalyzed PbSe nanowires. Background technique [0002] PbSe nanowire is an ideal material for the miniaturization of mid-infrared detectors, and it is a research hotspot and focus in the field of IV-VI nanomaterials. In existing reports, the material is mainly prepared by CVD method by feeding nitrogen gas containing 5% hydrogen gas. This preparation method has higher requirements on equipment, and the use of hydrogen also increases the risk of the experiment to a certain extent. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a preparation method of lead-catalyzed PbSe nanowires; [0004] The preparation method of this lead-catalyzed PbSe nanowire specifically comprises the following steps: [0005] Step 1. Plating a lead layer on the surface of the c...

Images