Swiss scientists use graphene and molybdenite to develop new flash memory prototypes

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Recently, according to foreign media reports, scientists at the Swiss Federal Institute of Technology in Lausanne have made a prototype of a new flash memory by combining graphene and molybdenite with superior electrical properties. The surviving prototype is promising in terms of performance, size, flexibility and energy consumption. Related research reports have been published in the recently published "American Chemical Society Nano" magazine.

Molybdenite is rich in natural reserves. Two years ago, researchers at the Nanoelectronics and Structures Laboratory of the college had revealed the excellent electronic properties of this mineral. After that, they explained the possibility of constructing highly efficient molybdenite chips. After the birth of molybdenite chips, molybdenum flash memory has also been launched. This is an important step for the application of this new material in the electronics industry.

This time, scientists combined the unique electronic properties of molybdenite with the excellent conductivity of graphene to construct a prototype of a new type of flash memory. The feature of this flash memory is that it can maintain the normal storage of data even in the absence of power. Because of such characteristics, this kind of memory can be an ideal storage medium for electronic devices such as cameras, mobile phones, notebook computers, and printers.

This flash memory prototype draws on the "field effect" geometry in its design, which is similar to a sandwich structure: a thin layer of molybdenite in the middle can transport electrons, and an electrode made of graphene at the bottom will transfer power to the molybdenite layer The upper part will also contain elements composed of graphene, which will help charge capture and data storage. In fact, graphene and molybdenite have a lot in common. Both have the potential to exceed the physical limitations of existing silicon chips and electronic transistors. The chemical structure of each layer is only a single atom thick, which also gives them great potential for mechanical flexibility and miniaturization. Although graphene is a good conductor, the semiconductor properties of molybdenite are excellent. Molybdenite has an ideal "energy band" in its electronic structure, while graphene does not. This allows it to be easily switched between "on" and "off" states, and therefore can reduce power consumption.

Researchers say that combining these two materials will allow them to make significant progress in miniaturization, and the use of such transistors will also help to make more flexible nanoelectronic devices. At present, this flash memory can only store a small amount of data, but because molybdenite is thinner than silicon, it is also more sensitive to charge, which will provide great possibilities for more efficient data storage.

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