Effects of 2nd dopants on the properties of PEDOT:PSS layers for printed electronics

Jerić, Josip (2017) Effects of 2nd dopants on the properties of PEDOT:PSS layers for printed electronics. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Bolanča Mirković, Ivana].

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Abstract

Solarne ćelije su jedan od najperspektivnijih rješenja za budućnost proizvodnje električne energije iz obnovljivih izvora. Solarne ćelije koje su senzibilizirane bojom (dye-sensitized solar cells) su obećavajuća alternativa za Si solarne ćelije, s obzirom na njihovu nisku cijenu i jednostavnost proizvodnje. PEDOT (poli(3,4-etilendioksitiopen)), kao vodljivi polimer, je privukao mnogo pažnje za primjenu u takvim solarnim ćelijama. S obzirom na neadekvatna fizikalno-kemijska svojstva, počinje se koristiti PEDOT:PSS; PEDOT polimer kojem je dodan dopant/nečistoća PSS (poli(stirensulfonat)). Tim dopantom je dobiveno svojstvo topljivosti u vodi, što uvelike olakšava njegovu buduću primjenu. No, s time se i drastično smanjuje njegova električna vodljivost. Iz tog razloga se pokušava primijeniti tehnika sekundarnog dopanta, kako bi se povećala električna vodljivost konačne otopine. Kao najbolji sekundardni dopanti su se pokazali etilen glikol i dimetilsulfatoksid, (EG i DMSO). Osim same otopine, mijenjaju se i podloge na kojima se otiskuju vodljivi polimeri; PET folije, staklo, a u zadnje vrijeme i celulozni substrati (nanoceluloza, razni papiri). Korištenjem vodljivih polimera se omogućava tisak solarnih ćelija sa visokom transparentnošću i velikom fleksibilnošću. Takve solarne ćelije mogu imati primjenu u raznim okruženjima, što povećava njihovo svakodnevno korištenje, kao i daljnji razvoj postojećih tehnologija.

Item Type:	Master's thesis - Graduate Programme
Mentor name:	Bolanča Mirković, Ivana
Thesis Committee:	Kulčar, Rahela and Bolanča Mirković, Ivana and Rudolf, Maja
Defence date:	27 September 2017
Abstract in english:	Solar cells are one of the most perspective solutions for the future of electricity production from renewable sources. Dye sensitized solar cells are promising alternative for Si based solar cells, thanks to their low cost and simplicity of manufacture. PEDOT, as a conductive polymer, has gained a lot of attention as a material that can be used in such solar cells. Since it’s physical and chemical properties weren’t suitable enough, PEDOT:PSS was started to be used instead. As a result of added dopant (PSS), PEDOT:PSS is soluble in water, which greatly facilitates it’s future application. As a downside, electrical conductivity is drastically lowered. It is one of the main reasons for the introduction of 2nd dopants, in order to increase the electrical conductivity of the final solution. As the best secondary dopants, ethylene glycol and DMSO were used. The substrates that the polymers were printed on were also being changed; PET foils, glass, cellulose substrates (nanocelulose, papers). With the use of conductive polymers, it is possible to print solar cells with high transparency and flexibility. Such solar cells can have usage in various surroundings, which increases their everyday application, as well as further development of existing technologies.
Uncontrolled Keywords:	vodljivi polimeri, tiskana elektronika, solarne ćelije, sekundarni dopanti
Keywords in english:	conductive polymers, printed electronics, solar cells, secondary dopants
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakultet
City:	Zagreb
Number of Pages:	29
Callnumber:	BOL 2017 JER
Inventory number:	DB673
Depositing User:	Nina Jelača
Status:	Unpublished
Date Deposited:	02 Feb 2018 08:27
Last Modified:	06 Feb 2018 12:20
URI:	http://eprints.grf.unizg.hr/id/eprint/2803

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