介电工程石墨烯晶体管用于高性能近红外光检测
Weijian Zhou1, Tieying Ma1, Ye Tian2
1College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310013, China.
iScience
|March 7, 2024
概括
石墨烯是一种石墨烯.
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:
- 石墨烯具有很高的载体移动性和光学吸收,这对光电子非常重要.
- 在基板上的石墨烯由于表面粗和声子散射而受到载体移动性的减少.
- 介电工程正在探索克服这些局限性.
研究的目的:
- 通过介电工程来增强石墨烯的载体流动性.
- 为了研究氧化 (Al2O3) 介电层对石墨烯电特性的影响.
- 为了证明增强型石墨烯在混合光探测器中的应用.
主要方法:
- 制造Si / SiO2 / Al2O3 / 石墨烯分层设备.
- 制造的设备的电气特性.
- 将增强型石墨烯集成到石墨烯/Ag2Te光电探测器中.
主要成果:
- Al2O3介电层有效地减少了SiO2的声子散射.
- 石墨烯的载体流动性增加到~8000cm^2V^-1s^-1.
- 混合光探测器实现了高响应率 (~400 AW^-1) 和检测能力 (~2.2 x 10^11 斯).
结论:
- 使用Al2O3的介电工程显著提高了石墨烯载体的移动性.
- 在近红外光探测器中证明了石墨烯性能的提高.
- 这项工作为将石墨烯和2D材料集成到CMOS过程中,为先进的光电子学铺平了道路.
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