Tip-enhanced two-photon-excited fluorescence of monolayer MoS2

被引：7
作者：
Wang, Yu [1 ]
Sun, Mengtao [2 ,3 ]
Meng, Lingyan [1 ]
机构：
[1] Qufu Normal Univ, Sch Phys & Phys Engn, Qufu 273165, Shandong, Peoples R China
[2] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China
[3] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2022年 / 576卷
基金：
中国国家自然科学基金;
关键词：
Two-photon-excited fluorescence; Tip-enhanced spectroscopy; Molybdenum disulfide; Enhancement factor; RAMAN; PHOTOLUMINESCENCE; EDGES;
D O I：
10.1016/j.apsusc.2021.151835
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High-order nonlinearity enables larger signal enhancements in two-photon spectroscopy compared to one photon spectroscopy, which is important for conducting photoluminescence measurements at the single molecule level. Herein, the two-photon-excited fluorescence (2pF) of monolayer MoS2 in various tip-enhanced spectroscopy configurations was theoretically investigated using the finite-difference time-domain method. Large enhancement factor for 2pF on the order of 10(5) was achieved by optimizing the radius and cone angle of the tip together with the distance between the tip and MoS2 film. The enhancement factor for 2pF is 40 times as much as that for one-photon-excited fluorescence because of the high-order nonlinear effect. Radiative and nonradiative decay rates were further calculated for determining quantum yields and elucidating the 2pF emission mechanism. These results provide a comprehensive understanding of 2pF behavior, which is highly useful for the design of MoS2-based optoelectronic devices.
引用
收藏
页数：7
相关论文
共 52 条
[1]   Enhanced Emission from Single Isolated Gold Quantum Dots Investigated Using Two-Photon-Excited Fluorescence Near-Field Scanning Optical Microscopy [J].
Abeyasinghe, Neranga ;
Kumar, Santosh ;
Sun, Kai ;
Mansfield, John F. ;
Jin, Rongchao ;
Goodson, Theodore, III .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (50) :16299-16307
[2]   Nanoscale Control of Near-Infrared Fluorescence Enhancement Using Au Nanoshells [J].
Bardhan, Rizia ;
Grady, Nathaniel K. ;
Halas, Naomi J. .
SMALL, 2008, 4 (10) :1716-1722
[3]   Visualizing Electric Fields at Au(111) Step Edges via Tip-Enhanced Raman Scattering [J].
Bhattarai, Ashish ;
Joly, Alan G. ;
Hess, Wayne P. ;
El-Khoury, Patrick Z. .
NANO LETTERS, 2017, 17 (11) :7131-7137
[4]   Atomic layer deposition: an enabling technology for the growth of functional nanoscale semiconductors [J].
Biyikli, Necmi ;
Haider, Ali .
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2017, 32 (09)
[5]   Chemical Vapor Deposition Growth and Applications of Two-Dimensional Materials and Their Heterostructures [J].
Cai, Zhengyang ;
Liu, Bilu ;
Zou, Xiaolong ;
Cheng, Hui-Ming .
CHEMICAL REVIEWS, 2018, 118 (13) :6091-6133
[6]   Physical Mechanisms on Plasmon-Enhanced Organic Solar Cells [J].
Chen, Yichuan ;
Cheng, Yuqing ;
Sun, Mengtao .
JOURNAL OF PHYSICAL CHEMISTRY C, 2021, 125 (38) :21301-21309
[7]   Two-dimensional WS2/MoS2 heterostructures: properties and applications [J].
Chen, Yichuan ;
Sun, Mengtao .
NANOSCALE, 2021, 13 (11) :5594-5619
[8]   In situ Plasmon-Enhanced CARS and TPEF for Gram staining identification of non-fluorescent bacteria [J].
Cui, Lin ;
Li, Rui ;
Mu, Tingjie ;
Wang, Jiangcai ;
Zhang, Wei ;
Sun, Mengtao .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2022, 264
[9]   Molybdenum diselenide (MoSe2) for energy storage, catalysis, and optoelectronics [J].
Eftelthari, Ali .
APPLIED MATERIALS TODAY, 2017, 8 :1-17
[10]   Single-layer MoS2 nanopores as nanopower generators [J].
Feng, Jiandong ;
Graf, Michael ;
Liu, Ke ;
Ovchinnikov, Dmitry ;
Dumcenco, Dumitru ;
Heiranian, Mohammad ;
Nandigana, Vishal ;
Aluru, Narayana R. ;
Kis, Andras ;
Radenovic, Aleksandra .
NATURE, 2016, 536 (7615) :197-+
123456