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

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

22 February 2024 | Xingchen Pang, Yang Wang, Yuyan Zhu, Zhenhan Zhang, Du Xiang, Xun Ge, Haoqi Wu, Yongbo Jiang, Zizheng Liu, Xiaoxian Liu, Chunsen Liu, Weida Hu & Peng Zhou
A rippled-assisted optoelectronic array (RAO) is developed for all-day motion detection and recognition, featuring a 18×18 pixel array on a specially treated Sr-SiNₓ substrate. The RAO array exhibits remarkable uniformity in electrical transport and optoelectronic properties, including a large memory window and optically stimulated non-volatile states. It achieves an extensive optical storage dynamic range exceeding 10⁶ and a high room-temperature mobility of 406.7 cm² V⁻¹ s⁻¹, four times higher than the International Roadmap for Device and Systems 2028 target. The array covers a broadband spectrum from visible (405 nm) to near-infrared (940 nm), enabling motion detection and recognition in both bright and dark environments. The RAO array mimics the snake's vision system, which can detect both visible and infrared light, allowing for motion detection regardless of ambient light conditions. The array uses a rippled structure to enhance carrier mobility and optical response, achieving continuous reconfigurable non-volatile positive and negative photoconductance (NV-PPC and NV-NPC). The RAO array demonstrates high stability and uniformity, with a high yield of 80% in transfer curves. It also shows excellent performance in motion detection and recognition, with the ability to detect motion in both bright and dark environments using visible and near-infrared spectra. The RAO array is a promising platform for future intelligent optoelectronic devices and applications in artificial hyper-vision and autonomous driving. The study highlights the potential of 2D materials in optoelectronic applications, demonstrating the integration of sensing, storage, and processing functions in a single device for efficient motion detection and recognition.A rippled-assisted optoelectronic array (RAO) is developed for all-day motion detection and recognition, featuring a 18×18 pixel array on a specially treated Sr-SiNₓ substrate. The RAO array exhibits remarkable uniformity in electrical transport and optoelectronic properties, including a large memory window and optically stimulated non-volatile states. It achieves an extensive optical storage dynamic range exceeding 10⁶ and a high room-temperature mobility of 406.7 cm² V⁻¹ s⁻¹, four times higher than the International Roadmap for Device and Systems 2028 target. The array covers a broadband spectrum from visible (405 nm) to near-infrared (940 nm), enabling motion detection and recognition in both bright and dark environments. The RAO array mimics the snake's vision system, which can detect both visible and infrared light, allowing for motion detection regardless of ambient light conditions. The array uses a rippled structure to enhance carrier mobility and optical response, achieving continuous reconfigurable non-volatile positive and negative photoconductance (NV-PPC and NV-NPC). The RAO array demonstrates high stability and uniformity, with a high yield of 80% in transfer curves. It also shows excellent performance in motion detection and recognition, with the ability to detect motion in both bright and dark environments using visible and near-infrared spectra. The RAO array is a promising platform for future intelligent optoelectronic devices and applications in artificial hyper-vision and autonomous driving. The study highlights the potential of 2D materials in optoelectronic applications, demonstrating the integration of sensing, storage, and processing functions in a single device for efficient motion detection and recognition.
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