通过无形相介导结晶方法对二维材料进行晶圆尺度合成
Suman Jaiswal1, Parvin Fathi-Hafshejani1, Baha Yakupoglu1
1Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama 36849, United States.
ACS applied materials & interfaces
|August 14, 2023
概括
本研究引入了一种新的无形相介导结晶 (APMC) 方法,用于晶圆尺度二维材料合成. 这种技术克服了脉冲激光沉积中的石化测量问题,使过渡金属二基因化物用于电子产品的大规模生产成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 固态物理 固态物理
背景情况:
- 晶圆尺度合成2D材料,如过渡金属二甲基化物 (TMDCs),对于商业化实验室尺度设备至关重要.
- 脉冲激光沉积 (PLD) 显示出大规模二维材料生长的前景,但通常会导致石化素缺乏和劣质石化学.
- 解决石化测量问题的现有方法,例如添加多余的石化素,导致统一性和可重复性问题.
研究的目的:
- 开发一种新的方法,用于晶圆尺度合成石化和晶体二维材料.
- 展示一种方法,可以克服2D材料生长的传统PLD的局限性.
- 为了实现对下一代电子和光电子设备至关重要的二维材料的大规模生产.
主要方法:
- 使用室温脉冲激光沉积 (PLD) 工艺制造有控制厚度的无形前体.
- 采用沉积后回火步骤,将无形前体结晶成所需的二维材料.
- 研究无形相介导结晶 (APMC) 用于合成像二硫化物 (MoS2) 和二化物 (WSe2) 等材料.
主要成果:
- 在Si/SiO2基板上成功实现晶体2D材料的晶圆尺度合成,包括MoS2和WSe2.
- 通过在PLD过程中调整激光脉冲数量来证明对层厚度的数字控制.
- 通过使用先进技术 (AFM,STEM,EDS) 确认了材料固体测量和特征晶体质量,域大小和层数.
结论:
- 无形相介导结晶 (APMC) 方法有效地使二维材料在晶圆尺度上进行石化合成.
- 这种技术为克服PLD限制提供了可行的途径,为可重复的大规模制造铺平了道路.
- 开发的增长方法具有重要的潜力,可以集成到用于先进电子和光电子应用的传统半导体制造工艺中.
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