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[{"key": "dc.contributor.advisor", "value": "Arutyunov, Konstantin", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Jalkanen, Pasi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kulju, Sampo", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-11-15T11:13:52Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-11-15T11:13:52Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2009", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/78652", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Uusiutuvat energiamuodot ja aurinkos\u00e4hk\u00f6 ovat kuuma puheenaihe. My\u00f6s tutkimusty\u00f6\nt\u00e4ll\u00e4 saralla on ollut kiivasta viime vuosikymmenin\u00e4 ja tuloksena on syntynyt esimerkiksi\nv\u00e4riaineherkistetyt aurinkokennot. N\u00e4m\u00e4 aurinkokennot voivat olla halpa\nratkaisu tulevaisuuden p\u00e4\u00e4st\u00f6tt\u00f6m\u00e4\u00e4n energiantuotantoon, mutta n\u00e4iss\u00e4 aurinkokennoissa\nk\u00e4ytetyt valolle herk\u00e4t v\u00e4riaineet voivat antaa my\u00f6s uusia mahdollisuuksia molekyylielektroniikan\nsaralle ja tuleviin nanomittaluokan sovelluksiin. V\u00e4riaineiden laajempi\nk\u00e4ytt\u00f6 vaatii kuitenkin uudenlaisten v\u00e4rj\u00e4ysmetodien kehitt\u00e4mist\u00e4. T\u00e4ss\u00e4 ty\u00f6ss\u00e4\nkeskityttiinkin v\u00e4riaineh\u00f6yrystimen kehitt\u00e4miseen ja testaamiseen.\nTy\u00f6n alussa tehd\u00e4\u00e4n katsaus v\u00e4riaineisiin ja k\u00e4yd\u00e4\u00e4n l\u00e4pi h\u00f6yryst\u00e4miseen liittyv\u00e4\u00e4\nteoriaa, kuten filmin muodostumisnopeutta ja erilaisia kasvumoodeja. T\u00e4m\u00e4n j\u00e4lkeen\ntutustutaan v\u00e4riaineherkistettyihin aurinkokennoihin, niiden toimintamekanismiin\nja valmistukseen, jonka j\u00e4lkeen tarkastellaan kiinte\u00e4n v\u00e4riaineen mahdollistamia\nratkaisuja ja niiden toimintaperiaatetta.\nSeuraavassa luvussa k\u00e4yd\u00e4\u00e4n l\u00e4pi v\u00e4rih\u00f6yrystimen kehityskaari sek\u00e4 nykyinen laitteisto\nkaaviokuvineen. Samalla esitet\u00e4\u00e4n my\u00f6s suoritetut kalibraatiotoimenpiteet sek\u00e4\nl\u00e4mp\u00f6- ett\u00e4 paksuusmittarille, ja kuvataan v\u00e4rin h\u00f6yrystysprosessi.\nN\u00e4ytteenvalmistus- ja tarvittavat litografiaprosessit k\u00e4yd\u00e4\u00e4n l\u00e4pi eri n\u00e4ytetyypeille\nja k\u00e4ytetyt mittausj\u00e4rjestelyt kytkent\u00e4kaavioineen ja laitteistoineen kuvataan.\nAbsorptiospektrien avulla varmistettiin, ett\u00e4 v\u00e4riaine h\u00f6yrystyy n\u00e4ytteelle. Kiinte\u00e4n\nv\u00e4rin spektri\u00e4 my\u00f6s verrattiin nesteeseen liuotettuun v\u00e4riin. Emissiospektrien\nmittauksella todennettiin, ett\u00e4 v\u00e4ri selvi\u00e4\u00e4 h\u00f6yrystysprosessista ja on t\u00e4ten viel\u00e4 aktiivista.\nN\u00e4ytteet osoittivat my\u00f6s valos\u00e4hk\u00f6isi\u00e4 ominaisuuksia. V\u00e4rj\u00e4ttyjen n\u00e4ytteiden\njohtavuus parani, kun niit\u00e4 valaistiin. Vaikutuksen voimakkuus korreloi n\u00e4ytteen\nabsorptiospektrin kanssa. My\u00f6s hystereesisefekti oli huomattavissa: tasaj\u00e4nnitepyyhk\u00e4isyn\n(negatiivisesta positiiviseen) tuloksena n\u00e4ytteen vastus kasvoi mik\u00e4\nhuomattiin takaisin pyyhk\u00e4isyn aikana. Vaikutus kuitenkin pystyttiin tuhoamaan nopeasti\ntarpeeksi suurella negatiivisella j\u00e4nnitteell\u00e4.\nH\u00f6yrystysmetodi todettiin toimivaksi ratkaisuksi ja t\u00e4ten v\u00e4rj\u00e4\u00e4minen voidaan ottaa\nosaksi litografiaprosessia. T\u00e4m\u00e4 mahdollistaa v\u00e4riherkistetyt mikro- ja nanorakenteet\njotka omaavat edell\u00e4 kuvatun kaltaisia valos\u00e4hk\u00f6isi\u00e4 ominaisuuksia.\nProjekti tehtiin yhteisty\u00f6ss\u00e4 Jyv\u00e4skyl\u00e4n yliopiston professori Jouko Korppi-Tommolan\nfysikaalisen kemian ryhm\u00e4n kanssa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Dye-sensitized solar cells (DSSC) have been investigated widely in last two decades and\nthe research work has led to good results. Nowadays DSSCs are relatively efficient, but\na problem is the long term stability and manufacturing. These dyes used in DSSCs\nwould also give multiple possibilities to nanoapplications, but the typical sensitization\nmethod, soaking in solution, doesn\u2019t work with nanofabrication.\nHowever increasing interest towards the molecular engineering has already developed\ndifferent kind of molecule deposition methods. Anyway, these methods being\nrelatively simple, don\u2019t suit mass production and don\u2019t allow to control the deposited\nlayer thickness.\nThe main objective of this thesis was the development a vacuum evaporation\nmethod for deposition of dye sensitizer molecules on PMMA-masked metal-oxide structures.\nThis was done in high vacuum conditions where dye was sublimated in heated\ncrucible at temperature range 145-160 C forming a gaseous jet of molecules from the\nevaporation chamber into the pumped target chamber. Thickness of the deposited dye\nlayer was controlled by the crystal deposition controller that was calibrated with the\nAFM. Dye deposition were applied to TiO2 and FTO based components that showed\nspectral response according to the dye absorption spectra. Photo-electric properties of\nthese components were also measured. Illumination affected the samples during the\nAC and DC measurements by reducing their resistance. The effect was found to be\nwavelength dependent and corresponding to the absorption spectrum of the samples.\nThe method proved to be usable method for integration of dye sensitizers to conventional\nlithographical fabrication in order to develop dye based light sensitive micro\nand nano sized electronics. Research of these new possible structures can give us an information\nabout dye-oxide interactions which could benefit the development of DSSCs.\nThey could also provide knowledge of the spectra of the pure dye without any solvent,\nquantum effects in dye and maybe even serve as a single photon detector.\nThis project was done in collaboration with Prof. Jouko Korppi-Tommola\u2019s group\nfrom the department of Chemistry of the University of Jyv\u00e4skyl\u00e4. A confocal microscope\nwas operated by Teemu Ihalainen from the department of Biological and\nEnvironmental Science of the University of Jyv\u00e4skyl\u00e4.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2021-11-15T11:13:52Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-11-15T11:13:52Z (GMT). No. of bitstreams: 0\n Previous issue date: 2009", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "60", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.title", "value": "Vapour phase deposition of dye sensitizer", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202111155665", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4021", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "v\u00e4riaineet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "v\u00e4rj\u00e4ys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nanotekniikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "colouring agents", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "dyeing", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nanotechnology", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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