Photo-induced non-volatile VO(2) phase transition for neuromorphic ultraviolet sensors.
Photo-induced non-volatile VO(2) phase transition for neuromorphic ultraviolet sensors.
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用于神经形态紫外线传感器的光诱导非挥发性 VO2 相变
DOI：
10.1038/s41467-022-29456-5
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发表时间：
2022-04-01
影响因子：
16.6
通讯作者：
Ge C
中科院分区：
文献类型：
--
作者：
Li G;Xie D;Zhong H;Zhang Z;Fu X;Zhou Q;Li Q;Ni H;Wang J;Guo EJ;He M;Wang C;Yang G;Jin K;Ge C
在寻求新兴的传感器内计算的过程中，非常需要能够响应光学刺激并结合非易失性相变的材料，以实现仿生神经形态视觉组件。在这里，我们报告了在紫外线照射下通过氧化学计量工程对 VO2 薄膜进行非挥发性多级控制。基于使用紫外线照射和电解质门控对 VO2 薄膜进行可逆调节，我们展示了一种在室温下具有集成传感、存储和处理功能的原理验证神经形态紫外线传感器，并通过神经形态传感器阵列的晶圆级集成证明了其硅兼容潜力。该器件通过光学写入显示出线性重量更新，因为其金属相比例几乎随光剂量线性增加。而且，这种神经形态传感器组成的人工神经网络可以从周围环境中提取紫外线信息，并将识别准确率从24%显着提高到93%。这项工作提供了设计神经形态传感器的途径，并将促进其在人工视觉系统中的潜在应用。新兴的传感器内计算技术非常需要仿生神经形态视觉组件。在这里，葛等人。开发一系列光电突触，能够通过 VO2 薄膜中光诱导的非易失性相变来记忆和处理紫外线图像。
In the quest for emerging in-sensor computing, materials that respond to optical stimuli in conjunction with non-volatile phase transition are highly desired for realizing bioinspired neuromorphic vision components. Here, we report a non-volatile multi-level control of VO2 films by oxygen stoichiometry engineering under ultraviolet irradiation. Based on the reversible regulation of VO2 films using ultraviolet irradiation and electrolyte gating, we demonstrate a proof-of-principle neuromorphic ultraviolet sensor with integrated sensing, memory, and processing functions at room temperature, and also prove its silicon compatible potential through the wafer-scale integration of a neuromorphic sensor array. The device displays linear weight update with optical writing because its metallic phase proportion increases almost linearly with the light dosage. Moreover, the artificial neural network consisting of this neuromorphic sensor can extract ultraviolet information from the surrounding environment, and significantly improve the recognition accuracy from 24% to 93%. This work provides a path to design neuromorphic sensors and will facilitate the potential applications in artificial vision systems. Bioinspired neuromorphic vision components are highly desired for the emerging in-sensor computing technology. Here, Ge et al. develop an array of optoelectronic synapses capable of memorizing and processing ultraviolet images facilitated by photo-induced non-volatile phase transition in VO2 films.
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影响因子：
4.4
作者：
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通讯作者：
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