Strain manipulation of the polarized optical response in two-dimensional GaSe layers
Jiangpeng Zhou, Yaping Wu, Hao Wang, Zhiming Wu, Xu Li, Weihuang Yang, Congming Ke, Shiqiang Lu, Chunmiao Zhang, Junyong Kang
Abstract
mode in angle-dependent Raman spectra is tuned to a two-fold symmetry. An anisotropic PL response is further regulated by changing the structural symmetry of GaSe lattices. A maximal polarization of 66.0% is achieved when the detection polarizations are perpendicular to the strain direction. All the findings in this study suggest a route for tuning the optical properties, particularly the polarized response in two-dimensional (2D) materials, and provide a strategy for developing flexible and anisotropic 2D optical devices.
Topics & Concepts
Materials scienceRaman spectroscopyAnisotropyPolarization (electrochemistry)ExcitonPhotoluminescenceMolecular physicsSpectral lineExcitationPerpendicularPhononCondensed matter physicsOpticsOptoelectronicsChemistryPhysicsPhysical chemistryAstronomyGeometryQuantum mechanicsMathematics2D Materials and ApplicationsSolid-state spectroscopy and crystallographyPerovskite Materials and Applications