Abstract
Due to limited power supply and multifarious scenarios in practical applications, flexible electronic devices are expected to have low power consumption and functional configurability. In this chapter, a novel technology of dual-material gate (DMG) is demonstrated in flexible carbon nanotube (CNT) devices, which could modulate the energy-band structure in channel area of the devices by adopting two kinds of metals with different work functions, leading to low-power characteristics and functional configurability simultaneously. First, concept and principles of CNT-based DMG technology are introduced, followed by demonstrations of low-power characteristics of DMG devices under the transistor configuration. Then, after the exhibition of the devices under diode configuration, factors that could affect the electrical performances of DMG devices are identified. Finally, the flexibility of DMG devices and multifunctional integrated circuits (ICs) are demonstrated, together with the discussion of future perspectives of DMG technology.
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Abbreviations
- DMG:
-
Dual-Material Gate
- NG:
-
Normal-Gated
- FET:
-
Field Effect Transistor
- MOSFET:
-
Metal-Oxide-Semiconductor Field Effect Transistor
- CNT:
-
Carbon Nanotube
- IC:
-
Integrated Circuit
- Al:
-
Aluminum
- Y:
-
Yttrium
- Ti:
-
Titanium
- Au:
-
Gold
- Pd:
-
Palladium
- I off :
-
off-state current
- I on :
-
on-state current
- V gs :
-
gate-to-source voltage
- V ds :
-
drain-to-source voltage
- W :
-
Width of the device channel
- L :
-
Length of the device channel
- SS :
-
subthreshold swing
- V th :
-
threshold voltage
- DIBL:
-
Drain-Induced Barrier Lowering
- I diode-on :
-
on-current of diode
- I-V curve:
-
current-voltage characteristic curves
- V g-in :
-
input signal applied on gate electrode
- V d-in :
-
input signal applied on drain electrode
- V ctrl :
-
Controlling signal
- V out :
-
Output signal
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Xiang, L., Hu, Y. (2022). Carbon Nanotube Dual-Material Gate Devices for Flexible Electronics. In: Borghi, F., Soavi, F., Milani, P. (eds) Nanoporous Carbons for Soft and Flexible Energy Devices. Carbon Materials: Chemistry and Physics, vol 11. Springer, Cham. https://doi.org/10.1007/978-3-030-81827-2_2
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