Interface phonon polariton coupling to enhance graphene absorption
Interface phonon polariton coupling to enhance graphene absorption
复制标题
界面声子极化子耦合增强石墨烯吸收
DOI:
10.1007/s12200-019-0957-7
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发表时间:
2019-12
影响因子:
5.4
通讯作者:
Changhong Chen
中科院分区:
文献类型:
--
作者:
Zhenyao Chen;Junjie Mei;Ye Zhang;Jishu Tan;Qing Xiong;Changhong Chen
Here we present a graphene photodetector of which the graphene and structural system infrared absorptions are enhanced by interface phonon polariton (IPhP) coupling. IPhPs are supported at the SiC/AlN interface of device structure and used to excite interband transitions of the intrinsic graphene under gated-field tuning. The simulation results show that at normal incidence the absorbance of graphene or system reaches up to 43% or closes to unity in a mid-infrared frequency range. In addition, we found the peak-absorption frequency is mainly decided by the AlN thickness, and it has a red-shift as the thickness decreases. This structure has great application potential in graphene infrared detection technology.
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