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Layered organic film growth by substrate temperature tuning for efficiency-enhanced OLEDs

Abstract : Effects on resultant organic light-emitting device of substrate temperature during the evaporation process of a light-emitting material are reported. Light-emitting diodes are based on a novel bis-imido-phenylene vinylene (ImPV) derivative as green-emitting molecule. It is reported that the substrate temperature has a great influence on the thin film morphology. Heating the substrate results in a more ordered film. Using this technique, molecules of ImPV self-organise in an even layered film with 1.7 nm-thick molecular layers. Devices based on heated substrates exhibit higher operating voltages but enhanced quantum and luminous efficiencies.
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https://hal.archives-ouvertes.fr/hal-00177819
Contributor : Olivier Dautel Connect in order to contact the contributor
Submitted on : Tuesday, October 9, 2007 - 1:01:47 PM
Last modification on : Friday, October 22, 2021 - 2:42:13 PM

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Guillaume Wantz, Olivier Dautel, Robert Almairac, Lionel Hirsch, Françoise Serein-Spirau, et al.. Layered organic film growth by substrate temperature tuning for efficiency-enhanced OLEDs. Organic Electronics, Elsevier, 2006, 7 (1), pp.38 -45. ⟨10.1016/j.orgel.2005.11.001⟩. ⟨hal-00177819⟩

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