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Non-volatile rippled-assisted optoelectronic array for all-day motion detection and recognition.

Xingchen Pang1, Yang Wang2,3,4, Yuyan Zhu1

  • 1State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, China.

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|February 21, 2024
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Summary
This summary is machine-generated.

This study introduces a novel optoelectronic array for efficient all-day motion detection and recognition. The integrated system offers advanced sensory, storage, and computation capabilities, exceeding future device targets.

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Area of Science:

  • Optoelectronics
  • Materials Science
  • Device Engineering

Background:

  • In-sensor processing offers reduced energy consumption and hardware complexity for motion detection.
  • Current all-in-one integration technologies struggle with simultaneous broadband spectrum image capture, memory, and processing.
  • Advanced solutions are needed for efficient, integrated motion detection and recognition systems.

Purpose of the Study:

  • To develop and demonstrate a macroscale, integrated optoelectronic array for all-day motion detection and recognition.
  • To investigate the performance characteristics of a rippled-assisted optoelectronic array for integrated sensory, storage, and computation.
  • To achieve high uniformity, extended dynamic range, and superior charge carrier mobility in the optoelectronic array.

Main Methods:

  • Fabrication of a macroscale (2x2 mm^2) 18x18 pixel rippled-assisted optoelectronic array.
  • Characterization of the array's memory window uniformity and optically stimulated non-volatile photoconductance.
  • Evaluation of the array's optical storage dynamic range, charge carrier mobility, and spectral response (405 nm-940 nm).

Main Results:

  • The rippled-assisted optoelectronic array demonstrated remarkable uniformity in memory window and photoconductance.
  • Achieved an optical storage dynamic range exceeding 10^6 and room-temperature mobility of 406.7 cm^2 V^-1 s^-1.
  • The array successfully performed motion detection and recognition across the visible to near-infrared spectrum.

Conclusions:

  • The developed rippled-assisted optoelectronic array enables efficient in-sensor processing for motion detection and recognition.
  • The integration of sensory, storage, and computation functions in a single array surpasses current technological limitations.
  • This technology represents a significant advancement towards low-power, high-performance motion analysis systems.