Abstract A novel and facile hydrothermal route was designed to produce h-BN-C quantum dots (h-BN-C QDTs) using h-BN powder as a precursor and Potassium Sodium Tartare as an intercalant. The resulting yellow solution possessed mono or few-layers of quantum dots with an average size of ~2.5 nm. Due to the incorporation of functional groups (carbon, oxygen) on the surface of h-BN, an enhancement of photo luminescent magnitude and a blue shift were observed in photoluminescence spectra from h-BN-C QDTs solution. Further, h-BN-C QDTs exhibits a bright blue fluorescence under the irradiation by a 365 nm UV light. Next, h-BN QDTs was utilized as the dielectric active layer by using simple drop casting method between the electrodes and fabricated the nonvolatile resistive switching devices. The fabricated devices exhibited the nonvolatile bipolar resistive switching characteristics with 103 ON/OFF ratio and turned ON and OFF threshold voltages of −1.9 V and +1.4 V, respectively. Further, the switching mechanisms of h-BN-C QDTs were found to be space charged trapping. It provides a route toward tailoring the optical and electrical properties of the h-BN materials and can be utilized in the future potential applications.

中文翻译：

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h-BN-C QDTs的水和空气友好碱金属合成及其在非易失性电阻开关存储器件中的应用

摘要 以六方氮化硼粉末为前驱体，鞑靼钾钠为插层剂，设计了一种新颖、简便的水热法制备六方氮化硼-碳量子点（h-BN-C QDTs）。所得黄色溶液具有平均尺寸为~2.5 nm 的单层或几层量子点。由于在 h-BN 表面引入了官能团（碳、氧），在 h-BN-C QDTs 溶液的光致发光光谱中观察到光致发光幅度的增强和蓝移。此外，h-BN-C QDTs 在 365 nm 紫外光照射下表现出明亮的蓝色荧光。接下来，通过在电极之间使用简单的滴铸方法，将 h-BN QDTs 用作介电活性层并制造非易失性电阻开关器件。制造的器件表现出非易失性双极电阻开关特性，开/关比为 103，导通和关断阈值电压分别为 -1.9 V 和 +1.4 V。此外，发现 h-BN-C QDT 的转换机制是空间电荷俘获。它为定制 h-BN 材料的光学和电学特性提供了一条途径，可用于未来的潜在应用。