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Ohmic contacts for organic optoelectronic devices

Kotadiya, Naresh

Abstract (englisch):
In last three decades, great progress has been made in the field of organic electronics. Researchers have put tremendous efforts to make new materials and device architectures, which has resulted in a great commercial success of organic light emitting diodes in mobile phone and television display screens. Despite that, still today it is challenging to make organic electronic devices that are efficient in performance, stable in operation and are economical in production at the same time. The objective of this thesis is to understand fundamental charge transport properties of small molecules based organic semiconductors and to develop novel organic electronic device architectures.

One of the prime requirements for efficient organic optoelectronic devices is to have ohmic charge injection contacts. Therefore, first a charge injection strategy for making ohmic hole contacts is developed. Using this strategy, ohmic hole contacts are achieved on organic semiconductors with an ionization energy up to 6 eV. As a result, the hole transport in a wide range of organic small molecules with ionization energy between 5 to 6 eV could be investigated. ... mehr

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Volltext §
DOI: 10.5445/IR/1000129182
Veröffentlicht am 15.02.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Elektrotechnik und Informationstechnik (ETIT)
Publikationstyp Hochschulschrift
Publikationsdatum 15.02.2021
Sprache Englisch
Identifikator KITopen-ID: 1000129182
Verlag Karlsruher Institut für Technologie (KIT)
Umfang 143 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Elektrotechnik und Informationstechnik (ETIT)
Institut Lichttechnisches Institut (LTI)
Prüfungsdatum 31.01.2020
Referent/Betreuer Prof. U. Lemmer
Schlagwörter Ohmic contact, OLEDs, Organic semiconductor, Charge Transport, TADF, Single carrier device, Electron Traps, Hole Traps, Charge trapping
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