Robust Excitons and Trions in Monolayer MoTe2

被引：162

作者：

Yang, Jiong ^{[1
]}

Lu, Tieyu ^{[2
,3
,4
]}

Myint, Ye Win ^{[1
]}

Pei, Jiajie ^{[1
,5
]}

Macdonald, Daniel ^{[1
]}

Zheng, Jin-Cheng ^{[2
,3
,4
]}

Lu, Yuerui ^{[1
]}

机构：

[1] Australian Natl Univ, Coll Engn & Comp Sci, Res Sch Engn, Canberra, ACT 0200, Australia

[2] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China

[3] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Peoples R China

[4] Xiamen Univ, Fujian Prov Key Lab Theoret & Computat Chem, Xiamen 361005, Peoples R China

[5] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

来源：

ACS NANO | 2015年 / 9卷 / 06期

基金：

澳大利亚研究理事会; 美国国家科学基金会;

关键词：

MoTe2; exciton; trion; two-dimensional; BAND-GAP; LIGHT; SINGLE; MOS2;

D O I：

10.1021/acsnano.5b02665

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Molybdenum telluride (MoTe2) has emerged as a special member in the family of two-dimensional transition metal dichalcogenide semiconductors, owing to the strong spin orbit coupling and relatively small energy gap, which offers new applications in valleytronic and excitonic devices. Here we successfully demonstrated the electrical modulation of negatively charged (X-), neutral (X-0), and positively charged (X+) excitons in monolayer MoTe2 via photoluminescence spectroscopy. The binding energies of X+ and X- were measured to be similar to 24 and similar to 27 meV, respectively. The exciton binding energy of monolayer MoTe2 was measured to be 0.58 +/- 0.08 eV via photoluminescence excitation spectroscopy, which matches well with our calculated value of 0.64 eV.

引用

页码：6603 / 6609

页数：7

共 30 条

[1] Theory of neutral and charged excitons in monolayer transition metal dichalcogenides [J].

Berkelbach, Timothy C. ;

Hybertsen, Mark S. ;

Reichman, David R. .

PHYSICAL REVIEW B, 2013, 88 (04)

[2] Strong Light-Matter Interactions in Heterostructures of Atomically Thin Films [J].

Britnell, L. ;

Ribeiro, R. M. ;

Eckmann, A. ;

Jalil, R. ;

Belle, B. D. ;

Mishchenko, A. ;

Kim, Y. -J. ;

Gorbachev, R. V. ;

Georgiou, T. ;

Morozov, S. V. ;

Grigorenko, A. N. ;

Geim, A. K. ;

Casiraghi, C. ;

Castro Neto, A. H. ;

Novoselov, K. S. .

SCIENCE, 2013, 340 (6138) :1311-1314

[3] Deterministic transfer of two-dimensional materials by all-dry viscoelastic stamping [J].

Castellanos-Gomez, Andres ;

Buscema, Michele ;

Molenaar, Rianda ;

Singh, Vibhor ;

Janssen, Laurens ;

van der Zant, Herre S. J. ;

Steele, Gary A. .

2D MATERIALS, 2014, 1 (01)

[4] Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2 [J].

Chernikov, Alexey ;

Berkelbach, Timothy C. ;

Hill, Heather M. ;

Rigosi, Albert ;

Li, Yilei ;

Aslan, Ozgur Burak ;

Reichman, David R. ;

Hybertsen, Mark S. ;

Heinz, Tony F. .

PHYSICAL REVIEW LETTERS, 2014, 113 (07)

[5] Two-Dimensional Crystals: Managing Light for Optoelectronics [J].

Eda, Goki ;

Maier, Stefan A. .

ACS NANO, 2013, 7 (07) :5660-5665

[6] Exfoliated multilayer MoTe2 field-effect transistors [J].

Fathipour, S. ;

Ma, N. ;

Hwang, W. S. ;

Protasenko, V. ;

Vishwanath, S. ;

Xing, H. G. ;

Xu, H. ;

Jena, D. ;

Appenzeller, J. ;

Seabaugh, A. .

APPLIED PHYSICS LETTERS, 2014, 105 (19)

[7] Two types of luminescence blinking revealed by spectroelectrochemistry of single quantum dots [J].

Galland, Christophe ;

Ghosh, Yagnaseni ;

Steinbrueck, Andrea ;

Sykora, Milan ;

Hollingsworth, Jennifer A. ;

Klimov, Victor I. ;

Htoon, Han .

NATURE, 2011, 479 (7372) :203-U75

[8] Three-Particle Complexes in Two-Dimensional Semiconductors [J].

Ganchev, Bogdan ;

Drummond, Neil ;

Aleiner, Igor ;

Fal'ko, Vladimir .

PHYSICAL REVIEW LETTERS, 2015, 114 (10)

[9]

Guo H., 2015, ARXIV150107078

[10] Observation of Excitonic Rydberg States in Monolayer MoS2 and WS2 by Photoluminescence Excitation Spectroscopy [J].

Hill, Heather M. ;

Rigosi, Albert F. ;

Roquelet, Cyrielle ;

Chernikov, Alexey ;

Berkelbach, Timothy C. ;

Reichman, David R. ;

Hybertsen, Mark S. ;

Brus, Louis E. ;

Heinz, Tony F. .

NANO LETTERS, 2015, 15 (05) :2992-2997

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