物理学报2025，Vol.74Issue(24)：29-35,7.DOI:10.7498/aps.74.20251120
利用范德瓦耳斯工程定制具有全新发光各向异性的二维异质结
Customizing two-dimensional heterojunction with novel luminescenct anisotropy using van der Waals engineering
摘要
Abstract
Luminescence and anisotropy in two-dimensional(2D)materials have important implications for both fundamental material physics and potential applications such as polarized light-emitting devices.However,many natural-occuring 2D materials typically exhibit either luminescence or anisotropy,but not both.In this work,we utilize van der Waals(vdW)engineering to construct a heterostructure(HS)with anisotropic luminescent properties,which is composed of isotropic monolayer(1L)MoS2(with strong intrinsic luminescence)and low-symmetry NbIrTe4(strong anisotropy without photoluminescence).Experimentally,we characterize the optical response of the HS by using angle-resolved PL spectroscopy.The results indicate that the intrinsic anisotropic potential field of NbIrTe4 at the interface effectively breaks the in-plane isotropic symmetry of MoS2,inducing a pronounced polarization-dependent emission of A and B excitons.The anisotropy ratio is enhanced to～1.58,corresponding to a linear polarization degree of approximately 22％.This work provides new insights into 2D interfacial coupling and offers useful guidance for the design and engineering of next-generation high-performance,tunable polarized light-emitting devices.关键词
各向异性/范德瓦耳斯异质结/角分辨光致发光Key words
anisotropy/van der Waals heterostructures/angle-resolved photoluminescence引用本文复制引用
文婷,裴胜海,夏娟,苏子洛,王雅兰,蔡霜,巫佳琦,秦嘉泽,焦陈寅,王曾晖,张泽娟..利用范德瓦耳斯工程定制具有全新发光各向异性的二维异质结[J].物理学报,2025,74(24):29-35,7.基金项目
国家自然科学基金(批准号:T2325007,62450003,U21A20459,62104029)、浙江省自然科学基金(批准号:ZCLQN25A0407)、四川省自然科学基金杰出青年科学基金(批准号:25NSFJQ0277)和亚稳材料制备技术与科学国家重点实验室(燕山大学)开放课题(批准号:202504)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.T2325007,62450003,U21A20459,62104029),the Zhejiang Provincial Natural Science Foundation of China(Grant No.ZCLQN25A0407),the Sichuan Provincial Natural Science Foundation for Distinguished Young Scholars,China(Grant No.25NSFJQ0277),and the State Key Laboratory of Meta-stable Materials Science and Technology(Yanshan University),China(Grant No.202504). （批准号:T2325007,62450003,U21A20459,62104029）
