Exploring Strategies for Decreasing Contact Resistance in Transistors Constructed with 2D Materials

Time Stamp: March 10, 2023 6:53 PM
Source Node: 2512543

The development of transistors constructed with 2D materials is a major breakthrough in the field of electronics. These transistors are capable of providing superior performance compared to traditional transistors, and they are also more cost-effective. However, one of the major challenges associated with these transistors is contact resistance. Contact resistance is the resistance that occurs when two materials come into contact, and it can significantly reduce the performance of a transistor. In this article, we will explore some strategies for decreasing contact resistance in transistors constructed with 2D materials.

One of the most effective strategies for reducing contact resistance is to use a low-resistance contact material. This material should be chosen based on the type of 2D material used in the transistor. For example, if the transistor is constructed with graphene, then a low-resistance metal such as gold or silver should be used as the contact material. This will ensure that the contact resistance is minimized. Additionally, it is important to ensure that the contact area between the two materials is as large as possible. This will help to reduce the contact resistance by increasing the surface area of contact.

Another strategy for reducing contact resistance is to use a barrier layer between the two materials. This layer should be chosen based on the type of 2D material used in the transistor. For example, if the transistor is constructed with graphene, then a suitable barrier layer could be an oxide or nitride layer. This layer will act as a barrier between the two materials, preventing them from coming into direct contact and reducing the contact resistance.

Finally, it is important to ensure that the contact area between the two materials is free from contaminants. Contaminants such as dust or dirt can increase the contact resistance by creating an additional layer between the two materials. Therefore, it is important to keep the contact area clean and free from contaminants.

In conclusion, there are several strategies that can be used to reduce contact resistance in transistors constructed with 2D materials. These strategies include using a low-resistance contact material, using a barrier layer between the two materials, and ensuring that the contact area is free from contaminants. By following these strategies, it is possible to significantly reduce contact resistance and improve the performance of transistors constructed with 2D materials.