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一个极化敏感,高开/关比和基于Nb2CTx和Nd2CTx@MoS2的自供电光探测器
Mengyuan Wang1, Jiaxing Chen1, Feng Liu1
1Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China.
Nanotechnology
|January 11, 2024
概括
少数层的碳化物 (Nb2C) 纳米片显示出可见到近红外光电子探测器的有希望的光电反应. 它们的性能,包括光电流和开关比,是可调的,扩大了对二维MXene材料的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 光电学是指光电子产品.
背景情况:
- 像Nb2C这样的二维MXene材料在能量储存和催化中建立了基础.
- Nb2C的光电子应用尚未得到充分探索,需要基于Nb2C的光探测器.
研究的目的:
- 为了研究几层Nb2C薄膜的光电子特性.
- 为了证明基于Nb2C的光电探测器的可行性,用于可见到近红外探测.
- 探索调整光探测器性能的方法.
主要方法:
- 通过螺旋涂层制造几层Nb2C薄膜.
- 在可见到近红外波长的光电反应的表征.
- 调整薄膜厚度,材料度和MoS2量子点兴奋剂以优化性能.
主要成果:
- Nb2C薄膜从可见光到近红外光表现出光电反应.
- 光探测器的性能可以通过控制薄膜厚度来调整.
- 达到高达330nA的光电流,切换比为410,响应率为8.3 × 10−4 A W−1.
- 极化反应显示灭绝率为7.6.
- MoS2量子点兴奋剂改善了切换比为3 × 10 5 (增加了700倍),并将暗电流减少到7.6 × 10-13A.
结论:
- 少数层的Nb2C纳米板适用于可见光到近红外光谱中的光电子探测器.
- 调节性质和通过兴奋剂增强的性能扩大了Nb2C在光电子中的应用范围.
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