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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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Optoelectronic memory using two-dimensional materials.

Sidong Lei1, Fangfang Wen, Bo Li

  • 1Department of Materials Science and NanoEngineering, Rice University , Houston, Texas 77005, United States.

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|December 18, 2014
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Summary
This summary is machine-generated.

Researchers developed an atomically thin optoelectronic memory array using 2D materials for image sensing. This novel memory technology can capture and store images by trapping and retrieving photogenerated charges.

Keywords:
2D image sensor2D optoelectronic memoryCu−In−SeInSeMoS2trapping states

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Optoelectronics

Background:

  • Atomically thin 2D materials offer unique electronic and optical properties.
  • Schottky barriers in 2D materials can create potential wells for charge trapping.
  • Optoelectronic memory is crucial for advanced image sensing and data storage.

Purpose of the Study:

  • To demonstrate an atomically thin optoelectronic memory array for image sensing.
  • To explore the use of layered CuIn7Se11, InSe, and MoS2 atomic layers for memory applications.
  • To illustrate the potential of 2D material-based image sensors for large-scale fabrication.

Main Methods:

  • Fabrication of an optoelectronic memory array using layered 2D materials.
  • Utilizing Schottky barriers to form potential wells for charge carrier trapping.
  • Demonstrating charge accumulation during light exposure and readout for data retrieval.

Main Results:

  • Successful demonstration of an atomically thin optoelectronic memory array.
  • Layered CuIn7Se11, InSe, and MoS2 atomic layers were employed.
  • The memory array showed the ability to accumulate and retrieve photogenerated charges.

Conclusions:

  • Atomically thin layered optoelectronic memory arrays are feasible for image sensing.
  • 2D materials provide a promising platform for developing large-scale image sensors.
  • This technology enables image capture and permanent storage in a compact form factor.