在支和悬浮的MoS2/石墨烯/MoS2垂直异构结构中进行间层电荷转移
Ana K Rocha Robledo1, Mario Flores Salazar2, Bárbara A Muñiz Martínez1
1Cinvestav Unidad Querétaro, Querétaro, México.
PloS one
|July 25, 2023
概括
我们探索了MoS2/石墨烯/MoS2垂直异构结构,发现由于石墨烯而增强的光发光.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 垂直异构结构 (VH) 具有独特的电子和光学特性.
- 二硫化物 (MoS2) 和石墨烯是先进电子产品的关键二维材料.
- 了解层间合对于设计新型异构结构至关重要.
研究的目的:
- 研究MoS2/石墨烯/MoS2垂直异构结构的光学和结构性质.
- 分析石墨烯对电子带对齐和光发光的影响.
- 确认层间合,并评估这些VH作为n++/金属/n连接点的潜力.
主要方法:
- 通过多次湿转移制造支和悬浮的MoS2/石墨烯/MoS2 VH.
- 使用拉曼光谱来检测结构性质和层间合的表征.
- 光发光 (PL) 谱学用于评估光学特性和辐射增强.
主要成果:
- 拉曼光谱证实了制造的VH中强烈的层间合.
- 与裸露的MoS2或MoS2/石墨烯相比,在三层VH中观察到PL排放的显著增强.
- 有证据表明,由石墨烯层促进的空间II型带对齐的形成.
结论:
- 莫斯2/石墨烯/莫斯2VH显示器具有增强的光学性能.
- 石墨烯在实现II型带对齐方面发挥着至关重要的作用.
- 这些VH显示应用作为n++/金属/n连接的希望.
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