Intrinsic vacancy in 2D defective semiconductor In2S3 for artificial photonic nociceptor
Intrinsic vacancy in 2D defective semiconductor In2S3 for artificial photonic nociceptor
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DOI：
10.1088/2752-5724/acdd87
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发表时间：
2023-07
期刊：
影响因子：
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通讯作者：
Peng Wang;Wuhong Xue;Wenjuan Ci;Ruilong Yang;Xiaohong Xu
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文献类型：
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作者：
Peng Wang;Wuhong Xue;Wenjuan Ci;Ruilong Yang;Xiaohong Xu
开发一种先进的人工智能光电信息系统，准确地模拟光子伤害感受器，如人类视觉伤害感受通路的激活过程，是至关重要的。可见光到达视网膜用于人类视觉感知，但其过度暴露会损害附近的组织。然而，关于可见光触发的伤害感受器的报道相对较少。在这里，我们引入了一个二维的天然缺陷的III-VI族半导体β-In 2S 3，并利用其广泛的光谱响应，包括可见光的本征缺陷带来的，可见光触发的人工光子伤害感受器。该器件在可见光激发下的响应模式与人眼非常相似。它完美地再现了人类视觉系统的疼痛感知特性，如“阈值”，“放松”，“无适应”和“敏感”。其工作原理是由于In 2S 3纳米片中的本征空位引起的电荷俘获机制。这项工作为宽带人工光子伤害感受器提供了一种有吸引力的材料系统（本征缺陷半导体）。
It is crucial to develop an advanced artificially intelligent optoelectronic information system that accurately simulates photonic nociceptors like the activation process of a human visual nociceptive pathway. Visible light reaches the retina for human visual perception, but its excessive exposure can damage nearby tissues. However, there are relatively few reports on visible light–triggered nociceptors. Here, we introduce a two-dimensional natural defective III–VI semiconductor β-In2S3 and utilize its broad spectral response, including visible light brought by intrinsic defects, for visible light–triggered artificial photonic nociceptors. The response mode of the device, under visible light excitation, is very similar to that of the human eye. It perfectly reproduces the pain perception characteristics of the human visual system, such as ‘threshold,’ ‘relaxation,’ ‘no adaptation’, and ‘sensitization’. Its working principle is attributed to the mechanism of charge trapping associated with the intrinsic vacancies in In2S3 nanosheets. This work provides an attractive material system (intrinsic defective semiconductors) for broadband artificial photonic nociceptors.