Pang Xingchen, Wang Yang, Zhu Yuyan, Zhang Zhenhan, Xiang Du, Ge Xun, Wu Haoqi, Jiang Yongbo, Liu Zizheng, Liu Xiaoxian, Liu Chunsen, Hu Weida, Zhou Peng
State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, China.
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China.
Nat Commun. 2024 Feb 22;15(1):1613. doi: 10.1038/s41467-024-46050-z.
In-sensor processing has the potential to reduce the energy consumption and hardware complexity of motion detection and recognition. However, the state-of-the-art all-in-one array integration technologies with simultaneous broadband spectrum image capture (sensory), image memory (storage) and image processing (computation) functions are still insufficient. Here, macroscale (2 × 2 mm) integration of a rippled-assisted optoelectronic array (18 × 18 pixels) for all-day motion detection and recognition. The rippled-assisted optoelectronic array exhibits remarkable uniformity in the memory window, optically stimulated non-volatile positive and negative photoconductance. Importantly, the array achieves an extensive optical storage dynamic range exceeding 10, and exceptionally high room-temperature mobility up to 406.7 cm V s, four times higher than the International Roadmap for Device and Systems 2028 target. Additionally, the spectral range of each rippled-assisted optoelectronic processor covers visible to near-infrared (405 nm-940 nm), achieving function of motion detection and recognition.
传感器内处理有潜力降低运动检测与识别的能耗及硬件复杂度。然而，具备同步宽带光谱图像捕获（传感）、图像存储（存储）和图像处理（计算）功能的先进一体化阵列集成技术仍显不足。在此，实现了用于全天运动检测与识别的波纹辅助光电阵列（18×18像素）的宏观尺度（2×2毫米）集成。该波纹辅助光电阵列在存储窗口表现出显著的均匀性、光激发非易失性正光电导和负光电导。重要的是，该阵列实现了超过10的广泛光存储动态范围，以及高达406.7厘米²伏⁻¹秒⁻¹的极高室温迁移率，比《2028年器件与系统国际路线图》目标高出四倍。此外，每个波纹辅助光电处理器的光谱范围覆盖可见光至近红外（405纳米 - 940纳米），实现了运动检测与识别功能。
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