Why lattice matching of heterojunction is required and how to realize it?

lattice matching can make the electrical and optical properties of materials better, and lattice matching of heterojunction can be achieved by the following methods.

1. Select a suitable material so that its lattice constant and crystal plane direction can match.

2. prepare epitaxial films or other technical methods, so that the lattice in heterojunction can be adaptively matched. The preparation of epitaxial film can be realize by growing a crystalline thin film on a substrate. During the growth process, the growth speed and temperature of the thin film can be controlled to make the crystal lattice in the thin film match, so as to realize the crystal lattice matching of heterojunction. Other technical methods include transition layer, etc. By controlling the thickness and material selection of transition layer between materials, the lattice adaptive matching of heterojunction is realized.