A dual-mode image sensor using an all-inorganic perovskite nanowire array for standard and neuromorphic imaging

IF 4.8 4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER
Zhenghao Long, Yucheng Ding, Xiao Qiu, Yu Zhou, Shivam Kumar, Zhiyong Fan
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引用次数: 1

Abstract

Abstract The high-density, vertically aligned retinal neuron array provides effective vision, a feature we aim to replicate with electronic devices. However, the conventional complementary metal-oxide-semiconductor (CMOS) image sensor, based on separate designs for sensing, memory, and processing units, limits its integration density. Moreover, redundant signal communication significantly increases energy consumption. Current neuromorphic devices integrating sensing and signal processing show promise in various computer vision applications, but there is still a need for frame-based imaging with good compatibility. In this study, we developed a dual-mode image sensor based on a high-density all-inorganic perovskite nanowire array. The device can switch between frame-based standard imaging mode and neuromorphic imaging mode by applying different biases. This unique bias-dependent photo response is based on a well-designed energy band diagram. The biomimetic alignment of nanowires ensures the potential for high-resolution imaging. To further demonstrate the imaging ability, we conducted pattern reconstruction in both modes with a 10 × 10 crossbar device. This study introduces a novel image sensor with high compatibility and efficiency, suitable for various applications including computer vision, surveillance, and robotics.
采用全无机钙钛矿纳米线阵列的双模图像传感器,用于标准和神经形态成像
高密度、垂直排列的视网膜神经元阵列提供了有效的视觉,我们的目标是用电子设备复制这一特征。然而,传统的互补金属氧化物半导体(CMOS)图像传感器基于传感、存储和处理单元的单独设计,限制了其集成密度。此外,冗余信号通信显著增加了能量消耗。目前,集传感和信号处理于一体的神经形态器件在各种计算机视觉应用中显示出良好的前景,但仍需要具有良好兼容性的基于帧的成像技术。在这项研究中,我们开发了一种基于高密度全无机钙钛矿纳米线阵列的双模图像传感器。该设备可以通过应用不同的偏置在基于帧的标准成像模式和神经形态成像模式之间切换。这种独特的依赖于偏置的光响应是基于一个精心设计的能带图。纳米线的仿生排列确保了高分辨率成像的潜力。为了进一步证明成像能力,我们用一个10 × 10的横杆装置在两种模式下进行了图案重建。本研究介绍了一种具有高兼容性和高效率的新型图像传感器,适用于计算机视觉,监控和机器人等各种应用。
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来源期刊
Journal of Semiconductors
Journal of Semiconductors PHYSICS, CONDENSED MATTER-
CiteScore
6.70
自引率
9.80%
发文量
119
期刊介绍: Journal of Semiconductors publishes articles that emphasize semiconductor physics, materials, devices, circuits, and related technology.
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