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Multifunctional Optoelectronics via Harnessing Defects in Layered Black Phosphorus

机译：利用层状黑磷中的缺陷来实现多功能光电

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Layered black phosphorus (BP), a promising 2D material, tends to oxidize under ambient conditions. While such defective BP is typically considered undesirable, defect engineering has in fact been exploited in contemporary materials to create new behaviors and functionalities. In this spirit, new opportunities arising from intrinsic defect states in BP, particularly through harnessing unique photoresponse characteristics, and demonstrating three distinct optoelectronic applications are demonstrated. First, the ability to distinguish between UV-A and UV-B radiations using a single material that has tremendous implications for skin health management is shown. Second, the same device is utilized to show an optically stimulated mimicry of synaptic behavior opening new possibilities in neuromorphic computing. Third, it is shown that serially connected devices can be used to perform digital logic operations using light. The underpinning photoresponse is further translated on flexible substrates, highlighting the viability of the technology for mechanically conformable and wearable systems. This demonstration paves the way toward utilizing the unexplored potential offered by defect engineering of 2D materials for applications spanning across a broad range of disciplines.
机译：层状黑磷（BP）是一种很有前途的2D材料，在环境条件下易于氧化。尽管通常认为这种有缺陷的BP是不希望有的，但实际上在当代材料中已经利用了缺陷工程来创建新的行为和功能。本着这种精神，展示了BP固有缺陷状态带来的新机遇，特别是通过利用独特的光响应特性，并展示了三种不同的光电应用。首先，显示了使用对皮肤健康管理具有重大意义的单一材料区分UV-A和UV-B辐射的能力。其次，利用同一设备显示光学刺激的突触行为模拟，为神经形态计算打开了新的可能性。第三，示出了串行连接的设备可以用于利用光来执行数字逻辑运算。支撑的光响应可在柔性基板上进一步转换，从而突出了该技术在机械整合和可穿戴系统中的可行性。该演示为利用二维材料缺陷工程所提供的未开发的潜力铺平了道路，该潜力可用于广泛领域的应用。

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