Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Identification of green solvents for organic solar cells using P3HT and PC60BM
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics. University College Leuven Limburg.
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The importance of renewable energy sources is becoming clearer and clearer as unsustainable energy sources are running out and global warming is getting worse. Energy derived from sunlight is already commonly used, but more energy can be produced from sunlight when solar cells become cheaper. Organic solar cells use organic compounds as semiconductors which can be prepared from solutions, resulting in lower production costs.

However, these semiconductors;Poly(3-hexylthiophene) and [6,6]-Phenyl-C61-butric acid methyl ester, are commonly dissolved inhalogenated and aromatic solvents. These solvents have toxic properties, which is why alternative solvents should be identified. Potential solvents were predicted by using the Hansen solubilityparameters and thin films were prepared by spin-coating the solutions.

The thin films were evaluated with absorption spectroscopy, the fluorescence spectroscopy and atomic force microscopy. Since the alternative solvents had lower solubilites than the commonly used solvents, i.e., chlorobenzene, ortho-dichlorobenzene and chloroform, the absorption of the films with new solvents were lower as well. Using tetrahydrofuran resulted in the highest absorption of the used solvents, while xylene hada better film morphology.

Increasing the absorption was attempted by spin-coating multiple thin films on top each other or by using a lower rotational speed. Spin-coating multiple films had nouniform effect on the absorption, while lowering the rotational speed increased the absorption, but not enough to equal the original absorption. Contrasting the results of the absorption spectra, the morphology improved when multiple layers were used while the film with the lower rotational speed’s morphology got worse.

In conclusion, tetrahydrofuran and xylene are the best alternative solvents and using multiple layers as well as decreasing the rotational speed show improvements oneither the morphology or the absorption.

Place, publisher, year, edition, pages
2015. , p. 41
Keywords [en]
Organic solar cells, P3HT, PC60BM, Hansen solubility parameters
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-36845OAI: oai:DiVA.org:kau-36845DiVA, id: diva2:826850
Subject / course
Chemical Engineering, Bachelor of Science
Supervisors
Examiners
Available from: 2017-08-23 Created: 2015-06-25 Last updated: 2017-08-23Bibliographically approved

Open Access in DiVA

fulltext(2716 kB)171 downloads
File information
File name FULLTEXT01.pdfFile size 2716 kBChecksum SHA-512
931094a898a549c0e8447b81e867a596670561d09be81cb9bf4d1a67299d3f152e3a67086eebb42f73ec94bde79508399a2cccf3aae4f85e65dfe3c0bef0ef0d
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Vanhecke, Ruud
By organisation
Department of Engineering and Physics
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 171 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 101 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf