通过使用H2S硫化并随后结晶的MoOx的转化,控制厚度和高均性的MoS2的晶圆尺度形成
Naoya Okada1, Shinichi Tanabe2, Hitoshi Miura3
1Semiconductor Frontier Research Center, National Institute of Advanced Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, 305- 8568, Ibaraki, Japan. okada-naoya@aist.go.jp.
Scientific reports
|February 5, 2026
概括
一种新的三步转换 (3SC) 方法使得在晶圆尺度基板上可扩展合成均,厚度控制的二硫化 (MoS2) 薄膜. 这一过程提高了先进电子产品的结晶性和均性.
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:
- 晶圆尺度合成均,高质量的二维 (2D) 半导体薄膜对于设备集成至关重要.
- 在规模上控制薄膜厚度和结晶度仍然是一个重大挑战.
研究的目的:
- 开发一种可扩展的合成方法,用于晶圆尺度的二硫化 (MoS2) 薄膜.
- 为了实现精确的厚度控制和提高MoS2膜的结晶性.
主要方法:
- 一个三步转换 (3SC) 过程,涉及无形MoOx沉积,低温H2S回火 (硫化) 和高温Ar回火.
- 通过调整初始MoOx厚度来实现厚度控制,范围从单层到20nm.
- 使用拉曼和光发光 (PL) 谱学的表征.
主要成果:
- 在整个Si/SiO2晶圆上均的MoS2膜覆盖.
- 从单层到20nm的精确厚度控制.
- 通过缩小PL-FWHM (~0.08 eV) 证实了增强的结晶性,并提高了硫化效率,具有更高的MoOx氧含量.
结论:
- 3SC 方法为生产高质量的 MoS2 片提供了可扩展和有效的途径.
- 证明了晶圆尺度兼容性和未来电子和光电子的潜力.
- 优化的工艺参数提高了薄膜的均性和结晶性.
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