Light management based on nanostructure-material engineering, is very important for optoelectronic applications. Here, through integrating single- layer graphene, we construct two different hybrid structures (layered graphene/dielectric/graphene and nano-patterned graphene/dielectric/graphene), and theoretically study their dynamic light transportation properties (reflection(R), transmission (T) and absorption (A)) in two different spectral regions (visible and THz) by changing the Fermi level (E_F) of the graphene layers. In the wavelength region of 300−1200 nm, tuning E_F has very weak influence on R, T and A for both systems. For the system without nano-patterning, R is high throughout the whole wavelength region (300−1200 nm); but a broad absorption window (530−700 nm) with A of ∼50 % is maintained for the nano-structures in the 0−3.0 eV tuning range of E_F. In the wavelength region of 30−1000 μm, tuning E_F plays a significant role in changing optical propagation characteristics for both systems, but with very different behaviors. For the nano-structured system, approximately 5% fluctuation of light absorption around 50 % is observed over the whole spectral range (30−1000 μm) under the E_F tuning range (from 0 to 3.0 eV). However, for the layered structure, high absorption (∼60 %) is only achieved from 600 to 1000 μm under the E_F tuning range of 0−0.5 eV. When changing E_F of the two graphene layers independently, it is found that the top graphene layer plays an important role in light management. Increasing the size of the nanostructure to 400 nm improves the absorption of the nano-patterned system to 92 % at a single wavelength of 670 μm.

基于纳米结构-材料工程的光管理对于光电应用非常重要。在这里，通过集成单层石墨烯，我们构建了两种不同的混合结构（层状石墨烯/介电体/石墨烯和纳米图案化石墨烯/介电体/石墨烯），并从理论上研究了它们的动态光传输特性（reflect（R），透射（ ）和吸收（A））通过改变石墨烯层的费米能级（E _F）在两个不同的光谱区域（可见光和太赫兹）。在300-1200 nm的波长范围内，调谐E _F这两个系统对R，T和A的影响都很弱。对于没有纳米图案的系统，R在整个波长区域（300-1200 nm）较高；但是在E _F的0-3.0 eV调谐范围内，纳米结构的A约为50％的宽吸收窗（530-700 nm）得以维持。在30-1000μm的波长范围内，调谐E _F在改变两个系统的光学传播特性方面都起着重要作用，但是行为却截然不同。对于纳米结构系统，在E _F下的整个光谱范围（30-1000μm）内观察到大约5％的光吸收波动，大约50％调整范围（从0到3.0 eV）。但是，对于分层结构，在0-0.5 eV的E _F调节范围内，仅从600到1000μm可获得高吸收（〜60％）。当独立地改变两个石墨烯层的E _F时，发现顶部石墨烯层在光管理中起重要作用。将纳米结构的尺寸增加到400 nm可以将纳米图案化的系统在670μm的单个波长处的吸收提高到92％。