Method for manufacturing two-dimensional material using top-down method

A method for manufacturing a two-dimensional material using a top-down method, the method comprising the steps of:

• preparing a bulk crystal including multiple layers, each of the multiple layers being formed of the two-dimensional material;
• forming a metal layer on the bulk crystal, and then attaching a thermal release tape on the metal layer;
• exfoliating only one layer of the two-dimensional material to which the metal layer and the thermal release tape have been attached from among the multiple layers in the bulk crystal;
• transferring the one layer of the two-dimensional material to which the metal layer and the thermal release tape have been attached onto a substrate;
• and
• removing the thermal release tape and the metal layer from the substrate onto which the two-dimensional material has been transferred,
• wherein in the step of exfoliating only the one layer of the two-dimensional material from among the multiple layers in the bulk crystal, a difference between a binding energy between the respective multiple layers in the bulk crystal and a binding energy between the bulk crystal and the metal layer is 30 meV/atom or less, and
• wherein the exfoliated one layer of two-dimensional material has an average thickness range of 0.3 nm to 1 nm.