Organic spin valve device based on two-dimensional metal organic framework thin film material and preparation method

Abstract

The invention discloses an organic spin valve device based on a two-dimensional metal organic framework film material and a preparation method. The preparation method comprises steps of (1) preparinga strip-shaped lanthanum strontium manganese oxygen bottom electrode on a substrate through a magnetron sputtering method, and obtaining the substrate with the strip-shaped lanthanum strontium manganese oxygen bottom electrode; (2) immersing the substrate in the step (1) into an aminosilane solution for reaction, taking out, washing and drying; (3) dissolving a copper salt, a nickel salt or a cobalt salt to prepare a solution A, and preparing an organic ligand into a solution B; (4) soaking the product obtained in the step (2) in a solution A and a solution B in sequence; (5) drying; and (6) evaporating a layer of metal cobalt film as a top electrode on the upper surface of the product obtained in the step (5) through a strip-shaped mask plate, and then evaporating a gold film as a protective layer. The method is advantaged in that the layer-by-layer self-assembly method can effectively solve problems that the two-dimensional metal organic framework material is difficult to dissolve and form a film, and are simple, low in cost, low in equipment requirement and suitable for large-scale production.

Description

technical field

[0001] The invention belongs to the technical field of spin electronics, and relates to an organic spin valve based on a two-dimensional metal organic framework thin film material and the two-dimensional metal organic framework thin film material as an intermediate layer.

[0002] technical background

[0003] Metal-organic frameworks are a class of crystalline nanoporous materials in which inorganic metal ions and organic ligands are combined through coordination. By changing metal nodes and various types of organic ligands, so far, researchers have constructed a series of novel metal-organic frameworks with one-dimensional, two-dimensional, and three-dimensional characteristics. Metal-organic frameworks have been used in many fields, such as gas storage, gas separation and catalysis. The conductive two-dimensional metal organic framework material is an emerging material in recent years. The d-π conjugation makes it have high conductivity and mobility. This ...

Images