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Related Concept Videos

Capacitor With A Dielectric01:18

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Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
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Laser maskless fast patterning for multitype microsupercapacitors.

Yongjiu Yuan1,2,3,4, Xin Li5,6,7, Lan Jiang8,9,10

  • 1Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing, PR China.

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|July 5, 2023
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Summary
This summary is machine-generated.

Researchers developed a maskless laser fabrication method for micro-supercapacitors. This ultrafast technique efficiently produces high-performance asymmetric micro-supercapacitors for advanced microelectronics.

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Area of Science:

  • Materials Science and Engineering
  • Nanotechnology
  • Energy Storage

Background:

  • Microscale energy storage is crucial for miniaturized devices.
  • Asymmetric micro-supercapacitors offer high voltage and energy density but face fabrication challenges.
  • Efficient production and miniaturization are key for practical applications.

Purpose of the Study:

  • To develop an ultrafast, maskless fabrication method for multitype micro-supercapacitors.
  • To demonstrate the efficient production of high-performance asymmetric micro-supercapacitors.
  • To enable industrial manufacturing and enhance the feasibility of micro-supercapacitors.

Main Methods:

  • Utilized temporally and spatially shaped femtosecond laser for fabrication.
  • Integrated MXene/1T-MoS2 with laser-induced MXene-derived TiO2 and 1T-MoS2-derived MoO3.
  • Fabricated micron-sized (10 × 10 μm²) micro-supercapacitors with high resolution (200 nm).

Main Results:

  • Achieved ultrafast fabrication of over 6,000 symmetric or 3,000 asymmetric micro-supercapacitors per minute.
  • Demonstrated high specific capacitance (220 mF cm⁻² and 1101 F cm⁻³).
  • Obtained a wide voltage window (52 V), high energy density (0.495 Wh cm⁻³), and power density (28 kW cm⁻³).

Conclusions:

  • The developed laser-based approach enables efficient, high-resolution fabrication of micro-supercapacitors.
  • The high performance of asymmetric micro-supercapacitors facilitates integration with other micro devices.
  • This method paves the way for industrial-scale manufacturing and broader practical applications of micro-supercapacitors.