Enhanced Vertical Transport III-Nitride Devices through Chemical Lift-Off Techniques

通过化学剥离技术增强垂直输运 III 族氮化物器件

• 批准号: 0901472
• 负责人: Patrick McCann
• 金额: $ 30万
• 依托单位: University of Oklahoma Norman Campus
• 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: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901472&HistoricalAwards=false
• 关键词: Enhanced; Vertical; Transport; III; Nitride

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." The objective of this research is exploration of a growth and device processing technique to improve the energy efficiency and reduce the cost of light emitting diodes for solid state lighting. Key challenges to the widespread implementation of these illumination devices include lifetime at high output powers, internal quantum efficiency of green emitters, and the cost of solid state sources. Such challenges result from the use of thermally and electrically insulating substrate materials which are incompatible with the device layers.The approach of this research is development of vertical transport devices through a two-step hybrid growth process. The first step employs low temperature integration of a chemically soluble layer; the second step explores the high-temperature overgrowth of device-quality material. Standard one-step growth techniques limit the integration of dissimilar materials due to interfacial reactions and interdiffusion of impurities, which can be avoided through hybrid growth. This work will systematically investigate the effects of processing, regrowth, and chemical liftoff on these materials and will ultimately compare the light extraction and thermal management benefits of this route with existing device technologies. The broader impacts of this work are significant in both the areas of educational outreach and potential economic development for the state. The outreach portion will provide hands-on lighting and energy engineering demonstrations to students at rural and urban middle schools populated by underrepresented groups. Successful implementation of this proposal will position the investigators for other economic development opportunities in the state, helping Oklahoma transition its leadership in energy to green technologies.

“该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“这项研究的目的是探索一种生长和器件加工技术，以提高固态照明用发光二极管的能源效率并降低其成本。 这些照明装置的广泛实施的关键挑战包括高输出功率下的寿命、绿色发射器的内部量子效率以及固态源的成本。 这种挑战来自于使用与器件层不相容的热绝缘和电绝缘衬底材料，本研究的方法是通过两步混合生长工艺开发垂直传输器件。 第一步采用化学可溶层的低温集成;第二步探索器件质量材料的高温过生长。 标准的一步生长技术由于界面反应和杂质的相互扩散而限制了不同材料的集成，这可以通过混合生长来避免。 这项工作将系统地研究加工，再生长和化学剥离对这些材料的影响，并最终将这种方法的光提取和热管理优势与现有的设备技术进行比较。这项工作的广泛影响在教育推广和国家潜在经济发展领域都很重要。 外展部分将为代表性不足的农村和城市中学的学生提供实际照明和能源工程示范。 这项提案的成功实施将为该州的其他经济发展机会定位调查人员，帮助俄克拉荷马州将其在能源方面的领导地位过渡到绿色技术。