Partial substitution with a significant effect: coexistence of a wide band gap and large birefringence in the oxychalcogenide AEGe<sub>2</sub>O<sub>4</sub>Se (AE = Sr and Ba)
Mao‐Yin Ran, Shenghua Zhou, Wenbo Wei, A-Yang Wang, Xin‐Tao Wu, Hua Lin, Qi‐Long Zhu
Abstract
Two novel 2D oxychalcogenides, AEGe 2 O 4 Se (AE = Sr and Ba), were designed using a partial substitution strategy which exhibits the coexistence of a wide band gap ( E g > 3.1 eV) and a large birefringence (Δ n > 0.2).
Topics & Concepts
Substitution (logic)BirefringenceMaterials scienceBand gapCrystallographyOptoelectronicsOpticsChemistryPhysicsComputer scienceProgramming languageCrystal Structures and PropertiesIron-based superconductors researchInorganic Fluorides and Related Compounds