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undergraduate thesis
Određivanje energije zabranjene zone Taucovom metodom
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. urn:nbn:hr:149:442781
Tkalčević, Marija
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Tkalčević, M. (2016). Određivanje energije zabranjene zone Taucovom metodom (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:442781

Tkalčević, Marija. "Određivanje energije zabranjene zone Taucovom metodom." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:149:442781

Tkalčević, Marija. "Određivanje energije zabranjene zone Taucovom metodom." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:149:442781

Tkalčević, M. (2016). 'Određivanje energije zabranjene zone Taucovom metodom', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 26 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:442781

Tkalčević M. Određivanje energije zabranjene zone Taucovom metodom [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2016 [cited 2024 December 26] Available at: https://urn.nsk.hr/urn:nbn:hr:149:442781

M. Tkalčević, "Određivanje energije zabranjene zone Taucovom metodom", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:149:442781

Metadata
TitleOdređivanje energije zabranjene zone Taucovom metodom
Title (english)The determination of band gap using Tauc method
AuthorMarija Tkalčević
MentorStanislav Kurajica (mentor)
Committee memberJuraj Šipušić (predsjednik povjerenstva)
Committee memberStanislav Kurajica (član povjerenstva)
Committee memberVladimir Dananić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2016-09-08, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Materials
Abstract
U radu je predstavljena metoda određivanja zabranjene zone poluvodiča korištenjem UV-Vis difuzne refleksijske spektroskopije. Detaljno je opisana sama tehnika difuzne refleksijske spektroskopije, postupak transformacije difuzijskog refleksijskog spektra u Kubelka-Munk funkciju kao i konstrukcija Taucova grafičkog prikaza, odnosno određivanje zabranjene zone. Uzorci TiO2, ZnO te ZrO2 prvo su podvrgnuti rendgenskoj difrakcijskoj analizi kako bi se dobio uvid u njihov fazni sastav, odnosno čistoću. Utvrđeno je da su tri uzorka monofazna te se sastoje od anatasa, rutila i cinkita dok je četvrti uzorak smjesa monoklinskog i kubičnog ZrO2. Monofazni uzorci dalje su analizirani metodom UV-Vis difuzne refleksijske spektroskopije. Dobiveni spektri su transformirani u Kubelka-Munk funkciju te su konstruirani grafički prikazi ovisnosti Kubelka-Munk funkcije o energiji. Potom su konstruirani Taucovi grafički prikazi i iz njih su određene zabranjene zone anatasa, rutila i cinkita. Dobivene su zabranjene zone od 3,22 eV za anatas, 3,17 eV za rutil i 3,28 eV za cinkit. Dobive vrijednosti za energiju zabranjene zone uspoređene su s literaturnim vrijednostima.
Abstract (english)
The method for the determination of semiconductor band gap using UV-Vis diffuse reflectance spectroscopy has been presented. Diffuse reflectance spectroscopy technique, the transformation procedure of diffuse reflectance spectra to Kubelka-Munk function and construction of Tauc's plot, i.e. the determination of band gap, have been described in details. The samples of TiO2, ZnO and ZrO2 have been first subjected to X-ray diffraction analysis in order to gain insight in their phase composition, i.e. phase purity. It has been determined that three samples are monophasic and composed of anatase, rutile and zincite while fourth sample is mixture of monoclinic and cubic zirconia. Monophasic samples were further analyzed using UV-Vis diffuse reflectance spectroscopy. Obtained spectra were transformed to Kubelka-Munk function and the dependences of Kubelka-Munk functions on energy have been graphically displayed. Subsequently Tauc's plots have been constructed and using them band-gaps of anatase, rutile and zincite have been determined. Band gaps of od 3.22 eV, 3.17 eV and 3.28 have been obtained for anatase, rutile and zincite, respectively. The obtained band gaps were compared with literature data.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:442781
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2018-02-02 12:17:19