Graphene is an incredibly promising material for a wide range of applications, from electronics to energy storage to biomedical devices. However, one potential limitation of graphene is its low bandgap compared to other materials, which can limit its ability to carry a large amount of charge. This means that it may not be suitable for certain electronic devices.
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One approach to modulating the bandgap of graphene is through the use of chemical or physical treatments. For example, by introducing impurities or modifying the surface structure of graphene, scientists can create different types of bandgaps. This has been demonstrated in various studies, but there is still much research to be done to fully understand how these modifications affect the electronic properties of graphene.
Another method to modulate the bandgap of graphene is through the use of external fields. By applying electric or magnetic fields to graphene, researchers can change the local electric field and hence change the energy levels of electrons within the graphene layer. This has been shown to be effective for controlling the electrical conductivity of graphene, which can be useful for applications such as sensors and actuators.
In recent years, a growing body of evidence has suggested that graphene may be able to be modulated using other materials, such as quantum dots or metal contacts. These materials have unique electronic properties that make them well-suited for manipulating the bandgap of graphene. For example, quantum dots can trap and confine electrons, while metal contacts can act as barriers between the graphene layer and the environment.
(can current be modulated in a graphene fet having bandgap less graphene?)
Overall, the modulation of the bandgap of graphene is an important area of research with many potential applications. While there is still much work to be done before graphene can truly be used in electronic devices, ongoing studies are pushing the boundaries of what we know about this promising material. As our understanding of graphene continues to grow, we can expect to see even more innovative applications in the future.
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