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Flexible Molybdenum Disulfide (MoS2) Atomic Layers for Wearable Electronics and Optoelectronics
Eric Singh1, Pragya Singh2, Ki Seok Kim3
1Department of Computer Science , Stanford University , Stanford , California 94305 , United States.
ACS Applied Materials & Interfaces
|March 5, 2019
Summary
Atomically thin molybdenum disulfide (MoS2) shows promise for flexible electronics. Strategies are improving its performance in transistors for wearable devices, displays, and sensors.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- Flexible, stretchable, and bendable materials are crucial for advanced electronics.
- Atomically thin layered molybdenum disulfide (MoS2) offers unique electronic properties for these applications.
- MoS2 is particularly interesting for its tunable bandgap and charge carrier mobility.
Purpose of the Study:
- To review processing and characterization of large-area MoS2 atomic layers.
- To summarize strategies for enhancing MoS2 field-effect transistor (FET) performance.
- To discuss recent progress in MoS2-based flexible electronic and optoelectronic devices.
Main Methods:
- Processing and spectroscopic characterization of large-area MoS2.
- Integration of high-κ dielectrics and encapsulating layers for MoS2 FETs.
- Chemical treatment to improve MoS2 photoluminescence.
Main Results:
- Enhanced charge carrier mobility and switching speed in MoS2 FETs.
- Significant improvement in MoS2 photoluminescence quantum yield.
- Demonstration of ultraflexible AM-OLED displays and RRAM arrays using MoS2 transistors.
Conclusions:
- MoS2 is a versatile material for flexible electronics, including FETs, OLEDs, RRAM, and sensors.
- Continued research on MoS2 and other 2D materials offers significant opportunities for wearable technology.
- Advancements in MoS2 processing and device integration are key to realizing its potential.
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