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Combinatorial Preparation and Characterization of Thin-Film Multilayer Electro-Optical Devices

Titelangaben

Neuber, Christian ; Bäte, Markus ; Thelakkat, Mukundan ; Schmidt, Hans-Werner ; Hänsel, Helmut ; Zettl, Heiko ; Krausch, Georg:
Combinatorial Preparation and Characterization of Thin-Film Multilayer Electro-Optical Devices.
In: Review of Scientific Instruments. Bd. 78 (2007) . - 072216. - 11 S..
ISSN 1089-7623
DOI: https://doi.org/10.1063/1.2756993

Volltext

Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

In this article we present a setup for the combinatorial vapor deposition of thin-film multilayer devices as well as methods for the fast and efficient analytic screening of the libraries obtained. The preparation setup is based on a commercially available evaporation chamber equipped with various evaporation sources for both organic and metallic materials. The combinatorial approach is realized by the combination of a rotation stage for the substrate, a live-mask sampler, and an additional mask whose position can be deliberately varied along one axis during the vaporation process. The latter is used to evaporate linear as well as step gradients by continuous or stepwise movement of a shutter mask. The mask sampler allows to define the sectors of the library and to evaporate more complex structures, e.g., an electrode layout. Finally, the simultaneous evaporation of two or more materials enables us to produce layers of varying composition ratio in general and doped materials, in particular. For the control of the evaporation process we have developed an automation software, which is particularly helpful for complex library designs and which grants excellent repeatability of experiments. Efficient and fast characterization of the obtained libraries is realized by (i) a purely optical setup and (ii) an electro-optical setup. (i) The UV/vis reader FLASHScan® 530 permits to map out the UV/vis absorbance or fluorescence of the whole library. The UV/vis absorbance is primarily used to determine layer thicknesses and to confirm thickness uniformity across larger regions. The fluorescence measurements are used to determine the composition of layers containing fluorescent dyes. (ii) For a detailed short- and long-term electro-optical analysis we have developed an automated measurement system, which allows the characterization of 8×8 optoelectronic devices and to study their degradation behavior. Both solar cells and organic light-emitting diodes can be tested. Finally, we have developed a data analysis software to extract characteristic values from the huge amount of data and with this facilitate the finding of systematic dependencies.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Physikalische Chemie II
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie I
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Emerging Fields
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Institut für Makromolekülforschung - BIMF
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Kolloide und Grenzflächen - BZKG
Forschungseinrichtungen > Sonderforschungsbereiche, Forschergruppen
Forschungseinrichtungen > Sonderforschungsbereiche, Forschergruppen > SFB 481 Komplexe Makromolekül- und Hybridsysteme in inneren und äußeren Feldern
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Professur Angewandte Funktionspolymere > Professur Angewandte Funktionspolymere - Univ.-Prof. Dr. Mukundan Thelakkat
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Professur Angewandte Funktionspolymere
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 29 Jun 2015 09:22
Letzte Änderung: 21 Jul 2016 09:20
URI: https://eref.uni-bayreuth.de/id/eprint/1331