Synthesis of Crystalline Carbon Nitride by Simultaneous Vibrational and Electronic Excitations

同时振动和电子激励合成晶体氮化碳

• 批准号: 0852729
• 负责人: Yongfeng Lu
• 金额: $ 25.58万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0852729&HistoricalAwards=false
• 关键词: Synthesis; Crystalline; Carbon; Nitride; Simultaneous

The primary goal of this research is to develop a new approach to realize simultaneous resonant excitations of vibrational states of precursor molecules and electronic states of reactive radicals to control and promote the deposition of crystalline carbon nitride (C3N4) thin films. The project objectives are to: 1) establish the basic science governing dual-resonance-excitation chemical vapor deposition (DRE-CVD) processes through coordinated experimental and theoretical investigations; 2) control the coating processes for optimization of stoichiometry in deposited films; 3) improve crystallization in deposited films; and 4) characterize coating materials to support process development.Successful implementation will have significant impact on scientific research of laser-controlled chemical processes by resonance excitation of precursor molecules and reactive radicals, as well as in the field of functional thin film deposition. This proposed approach provides the potential to realize surface coatings with controlled compositions, high energy-coupling efficiency, and low thermal impact on substrates. For applications, the proposed method is expected to provide a novel approach to material deposition on various substrates as functional coatings to enhance, improve, and optimize the substrate properties. The research activities will be integrated with educational purposes, including integrating new knowledge gained in the research in a nanotechnology course, training and mentoring of graduate and undergraduates including those from underrepresented groups, and seminars for K-12 students and teachers. Results will be disseminated to scientific, industrial, public and educational communities in ways including online publications, journal papers, annual K-12 seminars, an animation kit, and conference presentations. This project will ultimately benefit society through new and advanced electronic, biomedical, and mechanical applications and products.

这项研究的主要目的是开发一种新的方法，以实现前体分子和反应性自由基的电子状态的振动状态的同时共振激发，以控制和促进晶体氮化碳（C3N4）薄膜的沉积。项目目标是：1）通过协调的实验和理论研究来建立基础科学管理双共振 - 激发化学蒸气沉积（DRE-CVD）过程； 2）控制沉积膜中化学计量的涂层过程； 3）改善沉积膜中的结晶； 4）表征涂料材料以支持过程开发。实现成功的实施将对激光控制化学过程的科学研究产生重大影响，这是通过共振分子和反应性自由基的共振激发以及功能性薄膜沉积领域的。这种提出的方​​法为实现具有控制成分，高能量耦合效率和对底物的热影响的潜力提供了潜力。对于应用，预期该方法将为各种底物作为功能涂层提供一种新型的材料沉积方法，以增强，改进和优化底物特性。研究活动将与教育目的融合，包括整合纳米技术课程中研究的新知识，研究生和本科生的培训和指导，包括来自代表性不足的团体的研究，以及K-12学生和老师的研讨会。结果将以包括在线出版物，期刊论文，年度K-12年度研讨会，动画套件和会议演示文稿在内的方式传播到科学，工业，公共和教育社区。该项目最终将通过新的和先进的电子，生物医学和机械应用和产品来使社会受益。