Title

Study of modified photoluminescence of Graphene/1L-WS2/Graphene heterostructures

DGIST Authors

Cho, Chang-Hee ; Baik, Jaeyoung ; Jang, Jae Eun

Advisor

조창희

Co-Advisor(s)

Jae-Eun Jang

Issued Date

2019

Awarded Date

2019-02

Citation

Jaeyoung Baik. (2019). Study of modified photoluminescence of Graphene/1L-WS2/Graphene heterostructures. doi: 10.22677/thesis.200000171459

Type

Thesis

Table Of Contents

Ⅰ. Introduction 1
1.1 Two-dimensional materials 1
1.1.1 Transition metal dichalcogenides 1
1.1.2 Graphene 4
1.3 Motivation 6
1.3.1 Recent reports for modified photoluminescence in TMDs 6
1.3.2 Graphene/1L-WS2/Graphene heterostructures 10

ⅠⅠ. Experimental method 11
2.1 Synthesis of monolayer WS2 11
2.1.1 Substrate preparation 11
2.1.2 WS2 growth 12
2.2 Transfer method 13

ⅠⅠⅠ. Results and discussion 15
3.1 Synthesis and characterization of WS2 monolayer 15
3.2 Fabrication of the Graphene/1L-WS2/Graphene heterostructures 18
3.3 Observation of charge carrier transfer of Graphene/1L-WS2/Graphene heterostructures 20
3.4 Investigation of photoluminescence of Graphene/1L-WS2/Graphene heterostructures 22

ⅠV. Conclusions 28

URI

http://dgist.dcollection.net/common/orgView/200000171459
http://hdl.handle.net/20.500.11750/10709

DOI

10.22677/thesis.200000171459

Degree

MASTER

Department

Emerging Materials Science

Publisher

DGIST

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