Ultrafast spectroscopy of materials and devices

材料和器件的超快光谱

• 批准号: 203501-2011
• 负责人: Hegmann, Frank
• 金额: $ 3.5万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=546353
• 关键词: Ultrafast; spectroscopy; materials; devices

What happens when light is absorbed in a material? If electrons in the material are excited to higher energy levels, do they break free and move around inside the material or do they get stuck somehow? When they finally get back to their original state in the material, do they get rid of their excess energy by emitting light or by shaking the atoms around them in the material? And how long does it take for them to do all that? These are the types of questions scientists ask when trying to understand the nature of new materials that may someday find their way into the latest electronic devices.

当光被物质吸收时会发生什么？如果材料中的电子被激发到更高的能级，它们会挣脱并在材料内部四处移动，还是会以某种方式被卡住？当它们最终回到它们在材料中的原始状态时，它们是通过发光还是通过震动材料中它们周围的原子来摆脱多余的能量？他们做这些需要多长时间？这些都是科学家们在试图理解新材料的性质时提出的问题，这些新材料有一天可能会被用于最新的电子设备。