可调谐石墨烯光电子器件

凭借着良好的光电、力学和热学性能,石墨烯是目前凝聚态物理领域一个重要的研究热点.而且由于石墨烯的色散关系在狄拉克点附近呈现线性特性,石墨烯的光电特性可以通过外加电场、磁场和温度来加以调节.因此,石墨烯是研究可调谐器件的良好平台.基于石墨烯的电导率随费米能级有明显改变的特点,在分析石墨烯器件的调制机制的基础上,对石墨烯可调谐器件在太赫兹、中红外和近红外的应用发展进行了综述研究.

Tunable graphene opto-electronics devices

Due to the excellent optical,mechanical and thermal properties,graphene is one of the most important topics in many research fields.Since the linear dispersion relationship near the Dirac point can be tuned conveniently by using the applied gate voltage,magnetic fields,and temperature,graphene layer is a good platform to investigate the tunable devices.We give a brief presentation of graphene tunable devices in the terahertz,near-Infrared and mid-Infrared spectral regions.It benefits to the investigation of the tunable opto-electronics devices in the future.