Abstract Graphene's zero-bandgap energy band structure limits its electrical applications but gives it superior optical and optoelectronic properties. In twisted bilayer graphene (TwBLG), a periodic superlattice is formed by asymmetric lattice and twisted angles. Some new electron states appear between layers. As the twisted angles change, the energy difference between the Van Hove singularity also obviously changes. At this point, the optical and photoelectrical properties of TwBLG improve considerably. The optical absorption is significantly selectively enhanced, providing better photoelectric performance, faster photochemical reaction rates, and novel nanoscale photonic crystal structures. In this article, we review the properties and potential applications of TwBLG in optics and optoelectronics.

中文翻译：

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扭曲双层石墨烯莫尔超晶格的光学、光电和光电特性

摘要 石墨烯的零带隙能带结构限制了其电学应用，但赋予了其优越的光学和光电性能。在扭曲双层石墨烯 (TwBLG) 中，周期性超晶格由不对称晶格和扭曲角形成。一些新的电子态出现在层之间。随着扭曲角度的变化，范霍夫奇点之间的能量差异也发生了明显的变化。在这一点上，TwBLG 的光学和光电特性得到了显着改善。光吸收显着选择性增强，提供更好的光电性能、更快的光化学反应速率和新颖的纳米级光子晶体结构。在本文中，我们回顾了 TwBLG 在光学和光电子学中的特性和潜在应用。