Hibon, Pauline (2020)
Improving the interface stability of cross-linked films by ink formulation in printed organic light emitting diodes.
Technische Universität Darmstadt
doi: 10.25534/tuprints-00014138
Dissertation, Erstveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
Interface control remains a top challenge of solution‐processed organic light emitting diodes (OLED) stacks since the device performance heavily relies on it. Film stability of an inkjet deposited and crosslinked layer against subsequent exposure to a suitable inkjet printed solvent has been investigated. Impact of processing solvent (solvent used to prepare the polymer layer) on solution‐cast thin film properties has already been shown for polymer films. This study is the first one analyzing thin films stability against solvent exposure using technology relevant materials processed via inkjet printing (IJP). The outcome of this research showed that the stability of the crosslinked films is affected by the solvent used for ink formulation. These findings are of great interest for multilayered semiconductors devices, such as OLEDs, field‐effect transistors and dye‐sensitized solar cells. Differential scanning calorimetry (DSC) was used to quantify the efficiency of the polymer crosslinking reaction in pure powder and in thin films, as processed from different solvents. Crosslinking efficiency measured by DSC correlated well with the deformation induced by the solvent and observed on layer surfaces. The interaction in solution between polymer and solvent has also been evaluated to explain its impact on thin film stability against successive solvent printing.
Typ des Eintrags: | Dissertation | ||||
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Erschienen: | 2020 | ||||
Autor(en): | Hibon, Pauline | ||||
Art des Eintrags: | Erstveröffentlichung | ||||
Titel: | Improving the interface stability of cross-linked films by ink formulation in printed organic light emitting diodes | ||||
Sprache: | Englisch | ||||
Referenten: | von Seggern, Prof. Dr. Heinz ; Dörsam, Prof. Dr. Edgar | ||||
Publikationsjahr: | 5 Oktober 2020 | ||||
Ort: | Darmstadt | ||||
Kollation: | iii, 129 Seiten | ||||
Datum der mündlichen Prüfung: | 11 September 2020 | ||||
DOI: | 10.25534/tuprints-00014138 | ||||
URL / URN: | https://tuprints.ulb.tu-darmstadt.de/14138 | ||||
Kurzbeschreibung (Abstract): | Interface control remains a top challenge of solution‐processed organic light emitting diodes (OLED) stacks since the device performance heavily relies on it. Film stability of an inkjet deposited and crosslinked layer against subsequent exposure to a suitable inkjet printed solvent has been investigated. Impact of processing solvent (solvent used to prepare the polymer layer) on solution‐cast thin film properties has already been shown for polymer films. This study is the first one analyzing thin films stability against solvent exposure using technology relevant materials processed via inkjet printing (IJP). The outcome of this research showed that the stability of the crosslinked films is affected by the solvent used for ink formulation. These findings are of great interest for multilayered semiconductors devices, such as OLEDs, field‐effect transistors and dye‐sensitized solar cells. Differential scanning calorimetry (DSC) was used to quantify the efficiency of the polymer crosslinking reaction in pure powder and in thin films, as processed from different solvents. Crosslinking efficiency measured by DSC correlated well with the deformation induced by the solvent and observed on layer surfaces. The interaction in solution between polymer and solvent has also been evaluated to explain its impact on thin film stability against successive solvent printing. |
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Status: | Verlagsversion | ||||
URN: | urn:nbn:de:tuda-tuprints-141382 | ||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
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Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektronische Materialeigenschaften |
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Hinterlegungsdatum: | 14 Dez 2020 08:34 | ||||
Letzte Änderung: | 22 Dez 2020 10:59 | ||||
PPN: | |||||
Referenten: | von Seggern, Prof. Dr. Heinz ; Dörsam, Prof. Dr. Edgar | ||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 11 September 2020 | ||||
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