铁电驱动的自动驱动的低温和宽带光检测在MoS2/CuInP2S6/WSe2范德瓦尔斯异质连接纳米架构学
1School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
ACS applied materials & interfaces
|December 15, 2023
概括
本研究介绍了一种双异构结构稳定的范德瓦尔斯异构连接,用于自动供电的温度/光探测器. 新的设计增强了极化稳定性和性能,使长期稳定运行成为可能.
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:
- 二维 (2D) 铁电材料通过热电和散装光伏效应为自动供电的范德瓦尔斯温度/光探测器提供先进的调制.
- 实际应用受到超薄铁电材料极化低和极化稳定性差的阻碍.
研究的目的:
- 引入双异构结构稳定的范德瓦尔斯异构连接设计,以提高自动供电温度/光探测器的性能和运行寿命.
- 解决超薄铁电材料在极化稳定性和实际应用方面的局限性.
主要方法:
- 一个MoS2/CuInP2S6 (CIPS) /WSe2范德瓦尔斯异质连接的制造.
- 在UV到中红外光谱中对温度和光的异质连接的灵敏度的表征.
- 测量火电电流的产生,火电系数,温度灵敏度,光功率检测范围和检测能力 (D*).
主要成果:
- 莫斯2/CIPS/WSe2异质连接显示对微小的温度变化 (0.1K) 和弱光的敏感性.
- 观察到显著的火电系数 (分别为45nm和70nmCIPS的130和978μC/m2·K).
- 实现了高检测精度,广泛的光功率强度检测范围 (低至1μW/cm2) 和卓越的检测能力.
- 观察到显著的稳定性,自动供电检测性能保持了几个月,没有退化.
结论:
- 双重异构结构的设计有效地稳定了极化,提高了性能,并延长了自动供电的温度/光探测器的使用寿命.
- 这项工作为高性能,自我维持的温度/光检测提供了一个有前途的解决方案.
- 这些发现为未来铁电驱动的光检测技术的进步铺平了道路.
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