Defect Free and Robust Microstructuring Using Femtosecond Axicon-lens-focused Beam (FAB) with Application Focus in Thin Film Solar Cell Manufacturing

使用飞秒轴锥透镜聚焦光束 (FAB) 实现无缺陷且稳健的微结构，重点应用于薄膜太阳能电池制造

• 批准号: 1131627
• 负责人: Shuting Lei
• 金额: $ 27.64万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1131627&HistoricalAwards=false
• 关键词: Defect; Free; Robust; Microstructuring; Using

The objective of this research project is to study the physical interactions between a femtosecond near-nondiffracting laser beam and advanced materials such as solar thin films and reveal the ablation mechanisms in microstructuring of such materials. Research approaches will include both experimental investigation and numerical modeling. A comprehensive experimental study will be conducted to assess the effects of laser beam shaping and operating parameters on process robustness, efficiency and cut quality. A laser ablation model will be developed to elucidate the basic ablation mechanisms and to optimize process conditions. The successful completion of this work will generate new fundamental knowledge in the area of femtosecond laser interaction with advanced materials. The new knowledge will serve as the scientific foundation based on which new femtosecond laser micromachining processes can be developed. The proposed microstructuring process has applications in numerous areas including scribing of solar cells, micromachining of microelectromechanical systems and light-emitting diodes, microdrilling in automotive and aerospace industry, surface texturing for tribological components, etc. In the solar industry, for example, a significant increase in conversion efficiency for thin film solar panels will be achieved using the proposed scribing process. Together with the potential of significantly reducing cost through roll-to-roll mass production this project will contribute to the nation?s clean energy future free of air pollution, hazardous waste, and global warming. Besides impacts on manufacturing industry, fascinating education materials and activities will be developed to train a diverse group of undergraduate and graduate students and to educate K-12 students and the general public.

该研究项目的目的是研究飞秒近非衍射激光束与太阳能薄膜等先进材料之间的物理相互作用，并揭示此类材料微结构的烧蚀机制。研究方法将包括实验研究和数值建模。将进行全面的实验研究，以评估激光束整形和操作参数对工艺稳健性、效率和切割质量的影响。将开发激光烧蚀模型来阐明基本烧蚀机制并优化工艺条件。这项工作的成功完成将在飞秒激光与先进材料相互作用领域产生新的基础知识。新知识将成为开发新的飞秒激光微加工工艺的科学基础。所提出的微结构化工艺在许多领域都有应用，包括太阳能电池划片、微机电系统和发光二极管的微加工、汽车和航空航天工业中的微钻孔、摩擦学部件的表面纹理化等。使用拟议的划线工艺将提高薄膜太阳能电池板的转换效率。加上通过卷对卷大规模生产显着降低成本的潜力，该项目将为国家的清洁能源未来做出贡献，消除空气污染、危险废物和全球变暖。除了对制造业的影响外，还将开发引人入胜的教育材料和活动来培训多样化的本科生和研究生群体，并教育 K-12 学生和公众。