Electromechanical Properties of Graphene on Plastic Substrates

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Volume Title

Sähkötekniikan korkeakoulu | Master's thesis
Ask about the availability of the thesis by sending email to the Aalto University Learning Centre oppimiskeskus@aalto.fi

Authors

Date

2017-08-28

Department

Major/Subject

Master's Programme in Micro and Nanotechnology
Micro- and Nanosciences

Mcode

ELEC3037

Degree programme

NanoRad - Master’s Programme in Nano and Radio Sciences (TS2013)

Language

en

Pages

65

Series

Abstract

The goal of this master’s thesis was to examine electromechanical properties of graphene sheets under various strain on plastic substrates such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and poly(p-xylylene), more known as parylene. Firstly, to distinguish the growth quality of chemical vapor deposited (CVD) graphene, graphene sheets were transferred on SiO2/Si substrate by “bubbling” transfer method. Optical microscope, Raman spectroscopy and scanning electron microscope (SEM) were used to characterize transfer process quality as well as growth quality of graphene. Secondly, reliable quality graphene sheets were transferred on PET and PEN by “bubbling” transfer and wet etching process, respectively. Silver paste and Cu tape as well as electron beam evaporation were used for contacts fabrication. Finally, the electromechanical properties of samples were investigated by using a homemade bending machine along with four-point probe. SEM was used to see cracks after the bending test

Description

Supervisor

Lipsanen, Harri

Thesis advisor

Kim, Maria

Keywords

graphene, flexible electronics, bending test, electromechanical properties, Raman spectroscopy, bending radius

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Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201709046836

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[dipl] Sähkötekniikan korkeakoulu / ELEC