Abstract In this work, we theoretically study the linear and non-linear optical absorption properties of graphene, armchair, zigzag, and hybrid edge bilayer graphene (BLG) and visualize the exciton localization and charge transfer behavior of its transition process. Then, the relationship between the Moire pattern and the chiral properties of BLG is revealed by the visualization method. We found that the energy level of the Moire pattern is between the orbital energy levels of the zigzag and the armchair edges, and the addition of Moire can significantly enhance the interlayer charge transfer of normal BLG and twisted BLG. Moire itself has a local effect on charge transfer excitons and local excitons on BLG. Moreover, the Moire can effectively regulate the distribution of the magnetic transition dipole moment to control the chirality of twisted bilayer graphene (TwBLG). These laws will help the application of TwBLG in optical and optoelectronic devices. These regulars will guide the design and manufacture of TwBLG-based optoelectronic, photobiological, and photochemical reaction devices.

中文翻译：

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具有混合边缘的手性扭曲双层石墨烯中的线性和非线性光学吸收和不对称电磁相互作用

摘要 在这项工作中，我们从理论上研究了石墨烯、扶手椅、锯齿形和混合边缘双层石墨烯 (BLG) 的线性和非线性光学吸收特性，并对其跃迁过程的激子定域和电荷转移行为进行了可视化。然后，通过可视化方法揭示了莫尔图案与 BLG 手性特性之间的关系。我们发现莫尔条纹的能级介于锯齿形和扶手椅边缘的轨道能级之间，加入莫尔条纹可以显着增强正常BLG和扭曲BLG的层间电荷转移。莫尔条纹本身对电荷转移激子和 BLG 上的局部激子具有局部效应。而且，莫尔可以有效地调节磁跃迁偶极矩的分布以控制扭曲双层石墨烯（TwBLG）的手性。这些定律将有助于 TwBLG 在光学和光电器件中的应用。这些常客将指导基于 TwBLG 的光电、光生物和光化学反应装置的设计和制造。