Large-scale preparation and patterning method of two-dimensional material semiconductor film and two-dimensional material semiconductor film

Abstract

The invention belongs to the technical field of two-dimensional semiconductor film preparation, and particularly relates to a large-scale preparation and patterning method of a two-dimensional material semiconductor film. The method comprises the following steps of pre-treating a substrate; photoetching a target pattern on the pretreated substrate by using negative photoresist; preparing a two-dimensional semiconductor film on the substrate with a photoresist pattern by using a solution self-assembly technology, wherein the substrate is firstly soaked in a poly(diallyldimethylammonium chloride) aqueous solution and then soaked in a MoS2 aqueous solution, and the process can be repeated for many times; and soaking the film obtained on the substrate in acetone to remove the photoresist, andfinally, obtaining the target MoS2 pattern. The method has the advantages that the preparation method is simple and can be operated on any substrate; the thickness of the film is controllable, and thepatterning can be realized; reaction conditions are mild, and the method has wide application space in the field of high-performance two-dimensional semiconductor film electronic devices.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional semiconductor thin film preparation, and in particular relates to a large-scale preparation and patterning method of a two-dimensional material semiconductor thin film. Background technique [0002] The development of modern silicon-based semiconductor field has promoted the rapid development of microelectronics and optoelectronics technology. Semiconductor electronic devices are developing toward smaller, denser, faster, and more powerful information processing and storage and larger, lighter, cheaper, and more flexible information displays. [0003] Among numerous semiconductor materials, two-dimensional semiconducting thin films are more attractive in the field of thin film electronics due to their excellent charge transport and mechanical properties. However, the large-area preparation of uniform two-dimensional semiconductor thin films has been a challenge, which severely limits its ...

AI Technical Summary

Problems solved by technology

However, the solution-based two-dimensional semiconductor film assembly method still lacks a controllable film preparation process.

Although inkjet or spray printing can facilitate the patterning of semiconductor thin films, these printing processes generally have low resolution and precision, imprecise control of thickness, and uneven accumulation of nanosheets due to the coffee ring effect

Spin-coating produces uniform films, but this method cannot be applied to roll-to-roll processes

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