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master's thesis
Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen
Split: University of Split, University of Split, Faculty of science, 2018. urn:nbn:hr:166:151799
Šćurla, Josipa
University of Split
Faculty of Science
Department of Physics

Institutional repository: Repository of Faculty of Science

Cite this document

Šćurla, J. (2018). Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen (Master's thesis). Split: University of Split, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:166:151799

Šćurla, Josipa. "Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen." Master's thesis, University of Split, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:166:151799

Šćurla, Josipa. "Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen." Master's thesis, University of Split, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:166:151799

Šćurla, J. (2018). 'Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen', Master's thesis, University of Split, Faculty of Science, accessed 27 November 2024, https://urn.nsk.hr/urn:nbn:hr:166:151799

Šćurla J. Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen [Master's thesis]. Split: University of Split, Faculty of Science; 2018 [cited 2024 November 27] Available at: https://urn.nsk.hr/urn:nbn:hr:166:151799

J. Šćurla, "Visokotemperaturna svojstva električnog otpora kompozita SU8+grafen", Master's thesis, University of Split, Faculty of Science, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:166:151799

Metadata
TitleVisokotemperaturna svojstva električnog otpora kompozita SU8+grafen
Title (english)High-temperature electrical resistivity properties of SU8-graphene composites
AuthorJosipa Šćurla
MentorAnte Bilušić (mentor)
GranterUniversity of Split
Faculty of Science
(Department of Physics)
Split
Defense date and country2018-07-13, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
U ovom radu ispitivana je temperaturna ovisnost otpora uzorka SU8 + grafen za različite težinske koncentracije grafena (0.3%-4%) na temperaturama od 300 K do 670 K. SU8+ grafen je kompozit koji objedinjuje dobra fotolitografska svojstva polimera SU8 i dobra električna svojstva grafena. Utvrđeno je da uzorci s većim udjelom grafena imaju manji otpor te je pronađena univerzalna ovisnost otpora o temperaturi pri svim promatranim koncentracijama grafena. Ovisnost otpora o temperaturi pri nižim temperaturama (do ~500 K) je poluvodička ~exp(T0/T). Vrijednost energijskog procjepa ovisi o koncentraciji grafena i za razmatrane koncentracije je reda veličine 0.1 eV - 1 eV. Pri višim temperaturama (od ~500 K do ~670 K) temperaturna ovisnost otpora je oblika ~exp(T1/T2), što upućuje na različite mehanizme električnog vođenja. Potrebna su dodatna mjerenja kako bi se ova pretpostavka utvrdila te također kako bi se objasnio mehanizam vođenja na višim temperaturama.
Abstract (english)
Electrical resistance of SU8 - graphene composite is presented for various weight concentrations of graphene, from 0.3wt% to 4wt% of graphene on temperature range 300 K - 670 K. SU8+graphene composite unites good photolitographic properties of SU8 polymer with good electrical properies of graphene. It has been found that samples with greater ratio of graphene have lower electrical resistance and also that there is an universal dependence of resistance vs. temperature for all examined concentrations of graphene. At lower temperatures (<500 K), semiconducting behaviour ~exp(T0/T) is found. Gap energy depends on concentration of graphene and for examined samples is of order of magnitude from 0.1 eV to 1 eV. At higher temperatures (500 K - 670 K) temperature dependence of resistance is of form ~exp(T1/T2). Different forms of temperature dependence imply different conduction mechanisms at different temperature ranges. Additional measurements are needed to confirm these results and to explain conduction mechanism at higher temperatures.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:166:151799
Study programmeTitle: Physics; specializations in: major in teaching, major in Astrophysics, major in Biophysics, major in Enviromental physics, major in Computational physics
Course: major in Computational physics
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2018-12-07 16:38:16