Time resolved carrier dynamics in graphene

石墨烯中的时间分辨载流子动力学

• 批准号: 171596922
• 负责人: Professor Dr. Heinrich Kurz (†)
• 金额: --
• 依托单位: Lehrstuhl für Allgemeine Elektrotechnik und Theoretische Nachrichtentechnik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/171596922?language=en
• 关键词: Time; resolved; carrier; dynamics; graphene

The linear dispersion relation and high mobility of charge carriers in graphene offer large potential for ultra-fast electronic and photonic devices, whose performance is intrinsically tied to the ultra-fast relaxation dynamics of nonequilibrium carrier dynamics. Hence understand-ing of the relaxation processes is crucial for designing high speed electronic and photonic devices. Femtosecond time resolved spectroscopy is a powerful tool to probe the evolution of the relaxation processes, as it can monitor sample properties on a time scale of a few tens of femtoseconds, which is indispensable to observe the quasi particle dynamics in graphene.By an interdisciplinary approach between electrical-engineering and funda-mental physics the ultra-fast relaxation processes in graphene and gra-phene based devices will be investigated using time-resolved femtosecond spectroscopy to gain knowledge necessary for understanding electronic transport in high speed electronic and photonic devices. Aside from the application on electronic devices the feasibility of using graphene as saturable absorber material for passive mode-locking in femtosecond lasers and as ultra-fast photo detectors will be explored.

石墨烯中电荷载体的线性色散关系和高迁移率为超快速电子和光子设备提供了巨大的潜力，它们的性能与非平衡载体动力学的超快速松弛动力学本质上息息相关。因此，理解松弛过程对于设计高速电子和光子设备至关重要。飞跃时期解决的光谱法是探测放松过程演变的有力工具，因为它可以在几十秒的时间尺度上监测样品属性，这是必不可少的，即可观察石墨烯中的准粒子动力学。通过基于电源的跨性别方法和基础上的构图，绘制了跨越的方法，绘制了超基本的GRA-fra-fra intra gra-fra intra gra-fra intra gra-fra intra gra-fera gra-fra intra gra-fla intra in glapor。将使用时间分辨的飞秒光谱法研究设备，以获得理解高速电子和光子设备中电子传输所需的知识。除了在电子设备上的应用外，还将探索使用石墨烯作为可被动模式的饱和吸收材料，以探索飞秒激光器中的被动模式锁定和超快速的照片探测器。

项目成果

Infrared transparent graphene heater for silicon photonic integrated circuits.

• DOI: 10.1364/oe.24.007871
• 发表时间: 2016-04
• 期刊: Optics express
• 影响因子: 3.8
• 作者: D. Schall;M. Mohsin;A. Sagade;M. Otto;B. Chmielak;S. Suckow;A. Giesecke;D. Neumaier;H. Kurz

50 GBit/s Photodetectors Based on Wafer-Scale Graphene for Integrated Silicon Photonic Communication Systems

• DOI: 10.1021/ph5001605
• 发表时间: 2014-09-01
• 期刊: ACS PHOTONICS
• 影响因子: 7
• 作者: Schall, Daniel;Neumaier, Daniel;Kurz, Heinrich
• 通讯作者: Kurz, Heinrich