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DOI: 10.5445/IR/1000081330
Veröffentlicht am 28.05.2018

Laser Structuring of Organic Optoelectronic Devices

Fragoso García, Joshua Alejandro

Abstract (englisch):
The future promise of organic electronics for a cheap production from solution has led to
large investments in research and development. To take the research devices from lab scale
to the market, the structuring of them is necessary to connect the devices monolithically to
decrease the resistance losses on the devices. Ultrashort pulsed lasers have been used for this
purpose in organic photovoltaic. They have also been used to structure the indium tin oxide
(ITO) layer in different geometries for its application in other type of devices like organic
light emitting diodes (OLEDs).
In this work the use of ultrashort pulsed lasers is investigated. Initially, the structuring of
ITO on a mechanically flexible polyethylene substrate is studied. The ablation with different
wavelengths is explored. The ablation was then optimized to structure lines with low bulges
and selective ablation with negligible damage to the PET layer below. The structured lines
were optimized with different wavelengths in the visible regime.
The ablation to monolithically connect OLEDs is then investigated. Devices with small
inactive areas that can be ... mehr

Zugehörige Institution(en) am KIT Lichttechnisches Institut (LTI)
Publikationstyp Hochschulschrift
Jahr 2018
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-813303
KITopen ID: 1000081330
Verlag Karlsruhe
Umfang XII, 146 S.
Abschlussart Dissertation
Fakultät Fakultät für Elektrotechnik und Informationstechnik (ETIT)
Institut Lichttechnisches Institut (LTI)
Prüfungsdatum 14.02.2018
Referent/Betreuer PD Dr. A. Colsmann
Schlagworte femtosecond laser structuring, organic solar cells, organic light emitting diodes, printed electronics
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