Tunable near-infrared light emission from layered TiS_(3) nanoribbons  

作　　者：Junrong Zhang Cheng Chen Yanming Wang Yang Lu Honghong Li Xingang Hou Yaning Liang Long Fang Du Xiang Kai Zhang Junyong Wang 

机构地区：[1]School of Nano-Tech and Nano-Bionics,University of Science and Technology of China,Hefei 230026,China [2]CAS Key Laboratory of Nanophotonic Materials and Devices&Key Laboratory of Nanodevices and Applications,i-Lab,Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO),Chinese Academy of Sciences,Suzhou 215123,China [3]Frontier Institute of Chip and System,Fudan University,Shanghai 200438,China [4]School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China [5]College of Energy&Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China

出　　处：《Frontiers of physics》2024年第4期103-111,共9页物理学前沿（英文版）

基　　金：This work was supported by the National Key R&D Program of China(No.2021YFA1200804);the National Natural Science Foundation of China(Grant Nos.62274175,T2325025,and 61927813);Jiangsu Province Key R&D Program(Nos.BE2023009-5 and BE2021007-3);the open Foundation of Key Laboratory of Nanodevices of Jiangsu Province(No.ZS2301).

摘　　要：The low-dimensional light source shows promise in photonic integrated circuits.Stable layered van der Waals material that exhibits luminescence in the near-infrared optical communication waveband is an essential component in on-chip light sources.Herein,the tunable near-infrared photoluminescence(PL)of the air-stable layered titanium trisulfide(TiS3)is reported.Compared with iodine particles as a transport agent,TiS3 grown by chemical vapor transport using sulfur powder as a transport agent has fewer sulfur vacancies,which increases the luminescence intensity by an order of magnitude.The PL emission wavelength can be regulated in the near-infrared regime by thickness control.In addition,we observed an interesting anisotropic strain response of PL in layered TiS3 nanoribbon:a blue shift of PL was achieved when the uniaxial tensile strain was applied along the b-axis,while a negligible shift was observed when the strain was applied along the a-axis.Our work reveals the tunable nearinfrared luminescent properties of TiS3 nanoribbons,suggesting their potential applications as near-infrared light sources in photonic integrated circuits.

关 键 词：titanium trisulfide near-infrared luminescence S-vacancy TUNABILITY strain engineering 

分 类 号：O61[理学—无机化学]