A transistor? Memory? Wait, it's both!
What do you get if you cross graphene, hexagonal boron nitride and tungsten diselenide? Well, according to researchers from Hunan University, you get a field-effect transistor that can serve as both a switching element or a memory cell. The Partial Floating Gate Field Effect Transistor or PFGFET uses 2D van der Waals heterostructures to process isolated atomic layers. Nature's journal is unfortunately behind a paywall, but you can read a summary of it at [TechExplore].
The graphene acts as the gate and the transistor can be switched between n-type behavior and p-type behavior. It can also be configured as a switching element or as a memory element similar to an EEPROM cell.
One of the advantages of having configurable transistor types is that a single transistor structure can produce CMOS or complementary circuits. Traditionally, a CMOS IC has two different transistor structures and producing one of them often requires extra effort.
Configuration is done by applying a control voltage pulse. A negative control voltage produces a p-type FET and a positive voltage configures the same transistor as an n-type. If you don't have access to paper, the figures available online offer a good insight into the design of the device.
If you want to learn more about ordinary MOSFETs, we talk about them often. You can also get the lean on CMOS from [Bil Herd].
What do you get if you cross graphene, hexagonal boron nitride and tungsten diselenide? Well, according to researchers from Hunan University, you get a field-effect transistor that can serve as both a switching element or a memory cell. The Partial Floating Gate Field Effect Transistor or PFGFET uses 2D van der Waals heterostructures to process isolated atomic layers. Nature's journal is unfortunately behind a paywall, but you can read a summary of it at [TechExplore].
The graphene acts as the gate and the transistor can be switched between n-type behavior and p-type behavior. It can also be configured as a switching element or as a memory element similar to an EEPROM cell.
One of the advantages of having configurable transistor types is that a single transistor structure can produce CMOS or complementary circuits. Traditionally, a CMOS IC has two different transistor structures and producing one of them often requires extra effort.
Configuration is done by applying a control voltage pulse. A negative control voltage produces a p-type FET and a positive voltage configures the same transistor as an n-type. If you don't have access to paper, the figures available online offer a good insight into the design of the device.
If you want to learn more about ordinary MOSFETs, we talk about them often. You can also get the lean on CMOS from [Bil Herd].
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