Hyperspectral imaging of complex dielectric functions in 2D materials

被引：4

作者：

Kim, Un Jeong ^{[1
]}

Han, Yoojoong ^{[2
]}

Nugera, Florence A. ^{[3
]}

Yun, Seok Joon ^{[4
]}

Kim, Seok In ^{[2
]}

Lee, Moonsang ^{[5
]}

Gutierrez, Humberto R. ^{[3
]}

Lee, Young Hee ^{[6
,7
]}

Son, Hyungbin ^{[2
]}

机构：

[1] Dongguk Univ, Dept Phys, Seoul 04620, South Korea

[2] Chung Ang Univ, Sch Integrat Engn, Seoul 06974, South Korea

[3] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[4] Univ Ulsan, Dept Semicond Phys & Engn, Ulsan 44610, South Korea

[5] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea

[6] Inst Basic Sci IBS, Ctr Integrated Nanostruct Phys CINAP, Suwon 16419, South Korea

[7] Sungkyunkwan Univ SKKU, Dept Energy Sci, Suwon 16419, South Korea

来源：

NANO TODAY | 2024年 / 55卷

基金：

新加坡国家研究基金会;

关键词：

Hyperspectral phase microscopy; Spatially -resolved complex dielectric function; Refractive index; Extinction coefficient; Transition metal dichalcogenides; GRAIN-BOUNDARIES; GRAPHENE; GROWTH; MOS2; HETEROSTRUCTURES; STRAIN;

D O I：

10.1016/j.nantod.2024.102170

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

It remains a challenge to characterize inhomogeneities in two-dimensional (2D) layered materials associated with strain and defects. Spectroscopic ellipsometry and reflectance/transmittance measurement can be used to characterize complex dielectric functions. However, these techniques are not well suited for submicron spectroscopic imaging of inhomogeneities across a macroscale sample. Here, we report hyperspectral phase microscopy (HPM) to image spatially-resolved complex dielectric functions of refractive index and extinction coefficient of transition metal dichalcogenides. This was implemented by measuring wavelength-dependent phase shifts in optical interference, which were then analyzed by a simple Kramers-Kronig-consistent model. We successfully image not only the phase difference but also patterns of modulated carrier density and strain in mono-/bi-layer heterostructured transition metal dichalcogenides.

引用

页数：9

共 51 条

[1] Experimental evidence for two-dimensional magnetic order in proton bombarded graphite [J].

Barzola-Quiquia, J. ;

Esquinazi, P. ;

Rothermel, M. ;

Spemann, D. ;

Butz, T. ;

Garcia, N. .

PHYSICAL REVIEW B, 2007, 76 (16)

[2] Unconventional superconductivity in magic-angle graphene superlattices [J].

Cao, Yuan ;

Fatemi, Valla ;

Fang, Shiang ;

Watanabe, Kenji ;

Taniguchi, Takashi ;

Kaxiras, Efthimios ;

Jarillo-Herrero, Pablo .

NATURE, 2018, 556 (7699) :43-+

[3] Bandgap engineering of two-dimensional semiconductor materials [J].

Chaves, A. ;

Azadani, J. G. ;

Alsalman, Hussain ;

da Costa, D. R. ;

Frisenda, R. ;

Chaves, A. J. ;

Song, Seung Hyun ;

Kim, Y. D. ;

He, Daowei ;

Zhou, Jiadong ;

Castellanos-Gomez, A. ;

Peeters, F. M. ;

Liu, Zheng ;

Hinkle, C. L. ;

Oh, Sang-Hyun ;

Ye, Peide D. ;

Koester, Steven J. ;

Lee, Young Hee ;

Avouris, Ph. ;

Wang, Xinran ;

Low, Tony .

NPJ 2D MATERIALS AND APPLICATIONS, 2020, 4 (01)

[4] Probing graphene grain boundaries with optical microscopy [J].

Dinh Loc Duong ;

Han, Gang Hee ;

Lee, Seung Mi ;

Gunes, Fethullah ;

Kim, Eun Sung ;

Kim, Sung Tae ;

Kim, Heetae ;

Quang Huy Ta ;

So, Kang Pyo ;

Yoon, Seok Jun ;

Chae, Seung Jin ;

Jo, Young Woo ;

Park, Min Ho ;

Chae, Sang Hoon ;

Lim, Seong Chu ;

Choi, Jae Young ;

Lee, Young Hee .

NATURE, 2012, 490 (7419) :235-+

[5] Weakly Trapped, Charged, and Free Excitons in Single-Layer MoS2 in the Presence of Defects, Strain, and Charged Impurities [J].

Dubey, Sudipta ;

Lisi, Simone ;

Nayak, Goutham ;

Herziger, Felix ;

Van-Dung Nguyen ;

Toai Le Quang ;

Cherkez, Vladimir ;

Gonzalez, Cesar ;

Dappe, Yannick J. ;

Watanabe, Kenji ;

Taniguchi, Takashi ;

Magaud, Laurence ;

Mallet, Pierre ;

Veuillen, Jean -Yves ;

Arenal, Raul ;

Marty, Laetitia ;

Renard, Julien ;

Bendiab, Nedjma ;

Coraux, Johann ;

Bouchiat, Vincent .

ACS NANO, 2017, 11 (11) :11206-11216

[6] The Rise of MXenes [J].

Gogotsi, Yury ;

Anasori, Babak .

ACS NANO, 2019, 13 (08) :8491-8494

[7] Bio-inspired detoxification using 3D-printed hydrogel nanocomposites [J].

Gou, Maling ;

Qu, Xin ;

Zhu, Wei ;

Xiang, Mingli ;

Yang, Jun ;

Zhang, Kang ;

Wei, Yuquan ;

Chen, Shaochen .

NATURE COMMUNICATIONS, 2014, 5

[8] DIGITAL PHASE-SHIFTING INTERFEROMETRY - A SIMPLE ERROR-COMPENSATING PHASE CALCULATION ALGORITHM [J].

HARIHARAN, P ;

OREB, BF ;

EIJU, T .

APPLIED OPTICS, 1987, 26 (13) :2504-2506

[9] Thickness-Dependent Refractive Index of 1L, 2L, and 3L MoS2, MoSe2, WS2, and WSe2 [J].

Hsu, Chunwei ;

Frisenda, Riccardo ;

Schmidt, Robert ;

Arora, Ashish ;

de Vasconcellos, Steffen Michaelis ;

Bratschitsch, Rudolf ;

van der Zant, Herre S. J. ;

Castellanos-Gomez, Andres .

ADVANCED OPTICAL MATERIALS, 2019, 7 (13)

[10] Emerging Mono-Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications [J].

Huang, Weichun ;

Zhu, Jun ;

Wang, Mengke ;

Hu, Lanping ;

Tang, Yanfeng ;

Shu, Yiqing ;

Xie, Zhongjian ;

Zhang, Han .

ADVANCED FUNCTIONAL MATERIALS, 2021, 31 (10)

← 1 2 3 4 5 6 →