Asymmetric Overgrowth of Au/AuPt/PtSe₂ and Au/AgPtSe₂ Heterorods for Optimizing Nonlinear Enhancements

Dou, Zhen-Long1,2; Cheng, Li1; Wu, Zhi-Yong1; Chen, Li-Jiong1,3,4; Zhou, Li1; Wang, Qu-Quan2

2023-11-01

10.1002/adom.202302140

ADVANCED OPTICAL MATERIALS   影响因子和分区

2195-1071

Favorable growth of asymmetric hetero-nanostructures consisting of plasmonic metals and semiconductors or topological nanomaterials is highly desired because the performance of nonlinear optical antennas is closely related to their composition and morphology symmetry. In this work, two methods are proposed to overgrow PtSe2, a semiconductor or topological semimetal material, onto Au nanorods (AuNRs) to form Au/AuPt/PtSe2 and Au/AgPtSe2 heterorods via wet chemical technique. Both Au/AuPt/PtSe2 and Au/AgPtSe2 heterorods show asymmetric morphologies: the Au/AuPt/PtSe2 heterorods show a partially hollow morphology with an etched AuNR coated by AuPt and PtSe2 shells; the Au/AgPtSe2 heterorods prepared by Ag-mediated overgrowth method have a toothbrush shape with AgPtSe2 attached on the side surface near one end of AuNRs. The two asymmetric heterorods show significantly enhanced nonlinear radiations of second harmonic generation with the excitation laser wavelength tuning from 1220 to 1315 nm, and a maximal nonlinear enhancement factor of 16 is achieved, which is attributed to the interaction of gold core with platinum selenide shell and the broken symmetry of heterostructures. The findings provide a strategy to prepare metal-topological heterostructures as optical antennas with optimized performance in the application of nonlinear photonic nanodevices.

nonlinear nanoantennas PtSe2 second harmonic generation surface plasmon resonance topological materials

SCI ; EI

英语

通讯

This research was supported by the National Key Ramp;D Program of China (Grant No. 2020YFA0211300) and the National Natural Science Foundation of China (Grant Nos. 12174294, 12074296, and 12374288).[2020YFA0211300] ; National Key Ramp;D Program of China["12174294","12074296","12374288"]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:001105207500001

WILEY-V C H VERLAG GMBH

20234615070917

Harmonic generation ; Laser excitation ; Morphology ; Nanoantennas ; Nanorods ; Nanostructured materials ; Nonlinear optics ; Platinum compounds ; Topology

Telecommunication; Radar, Radio and Television:716 ; Nonlinear Optics:741.1.1 ; Laser Applications:744.9 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933 ; Crystalline Solids:933.1 ; Materials Science:951

Web of Science

1.Wuhan Univ, Sch Phys & Technol, Key Lab Artificial Micro & Nanostruct, Hubei Nucl Solid Phys Key Lab,Minist Educ, Wuhan 430072, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Coll Sci, Shenzhen 518055, Peoples R China
3.Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

Dou, Zhen-Long,Cheng, Li,Wu, Zhi-Yong,et al. Asymmetric Overgrowth of Au/AuPt/PtSe₂ and Au/AgPtSe₂ Heterorods for Optimizing Nonlinear Enhancements[J]. ADVANCED OPTICAL MATERIALS,2023.

Dou, Zhen-Long,Cheng, Li,Wu, Zhi-Yong,Chen, Li-Jiong,Zhou, Li,&Wang, Qu-Quan.(2023).Asymmetric Overgrowth of Au/AuPt/PtSe₂ and Au/AgPtSe₂ Heterorods for Optimizing Nonlinear Enhancements.ADVANCED OPTICAL MATERIALS.

Dou, Zhen-Long,et al."Asymmetric Overgrowth of Au/AuPt/PtSe₂ and Au/AgPtSe₂ Heterorods for Optimizing Nonlinear Enhancements".ADVANCED OPTICAL MATERIALS (2023).