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Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices
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面具结构优化,用于超越EUV光刻.

Ziqi Li, Lisong Dong, Ma Xu

    Optics letters
    |July 1, 2024
    PubMed
    概括

    超出极端紫外线 (BEUV) 的光刻使用6纳米波长进行集成电路制造. 这项研究优化了面具结构,以提高BEUV成像质量,提高图案缩小能力.

    科学领域:

    • 半导体制造业 半导体制造业
    • 先进的 lithography 技术可以使用.
    • 光学物理学的光学物理.

    背景情况:

    • 超出极紫外线 (BEUV) 的光刻是一种有前途的未来技术,用于集成电路 (IC) 制造,使持续的模式缩小.
    • 目前的面具结构需要优化,以最大限度地提高BEUV光刻系统的成像质量.
    • 准确的模拟面罩衍射近场 (DNF) 对于预测 lithography 性能至关重要.

    研究的目的:

    • 提出和验证面具结构的优化方法,以提高BEUV光刻画中的成像质量.
    • 提高面具多层的反射系数,以更好地操纵光线.
    • 开发面罩吸收结构的反向设计方法,以实现卓越的光刻效果.

    主要方法:

    • 优化面具多层结构以最大限度地提高反射系数.
    • 使用波恩序列算法建立一个面罩衍射近场 (DNF) 模型.
    • 面具吸收器结构的反向设计采用粒子群优化 (PSO) 算法.

    主要成果:

    • 通过提出的优化方法,BEUV光刻成像质量得到了显著的改进.
    • 优化的面具结构在模拟中表现出增强的性能.
    • 开发的工作流程被证明是有效的,用于改进图像在先进的石版画.

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    结论:

    • 拟议的面具结构优化方法显著提高了BEUV光刻画中的成像质量.
    • 该工作流适用于EUV (极紫外线) 和软X射线成像应用.
    • 这项研究有助于推进下一代半导体制造技术的发展.