Navigationsweiche Anfang

Navigationsweiche Ende

Select language

Electroluminescence EL and Electrochemoluminescence ECL

higher secondary education

V1

Construction and operation of an OLED (organic light emitting diode) consisting of an emitting layer made of a semi-conducting polymer, an anode made of FTO glass (or FTO-PET-sheet) and a cathode made of galinstan

V2

Construction and operation of an ECL cell using a ruthenium phenanthroline complex as an emitter, electrodes with platinated nickel foils (razor foils) and EDTA as sacrificial donor
Flash-Animations:

V3

Construction and operation of an electrochemical cell made of an half-cell like in V2 and a half-cell with luminol in alkaline solution - simultaneous emission of different colors on both electrodes.

Technical Contents: Charge injection from a direct current source into the polymer, diffusion of the charge carriers and recombination of the electron-hole-pairs e-/h+ resulting in the emission of a photon; generation of electronically excited state in a ruthenium complex by anodic oxidation (extraction of an electron) followed by electron injection from molecules of the sacrifical donor (EDTA); comparison of EL and ECL with photoluminescence

Scope: Synthetic materials (structure and properties of makro molecular compounds - especially innovative materials); electro chemistry (cold light from emission of photons resulting from electronically and chemically generated excited states) (higher secondary education); physics: efficiency factors of LED’s and OLED’s compared to other light sources

Referenzen

2014
Michael W. Tausch; M. von Wachtendonk; Claudia Bohrmann-Linde; Simone Krees
 
CHEMIE 2000+ Qualifikationsphase
 
Publisher: C.C.Buchner, Bamberg
2013
Jorge G. Ibanez; Daniel Zavala-Araiza; Biaani Sotomayor-Martinez Barranco; Jonatan Torres-Perez; Claudia Camacho-Zuniga; Claudia Bohrmann-Linde; Michael W. Tausch
 
A Demonstration of Simultaneous Electrochemiluminescence
Journal of Chemical Education, 90(4):470--472
2013
Amitabh Banerji; Michael W. Tausch; Ullrich Scherf
 
Classroom Experiments and Teaching Materials on OLEDs with Semiconducting Polymers
Educación Quí­mica, 24(1):17--22
2011
Amitabh Banerji; Michael W. Tausch; Ullrich Scherf
 
Fantastic Plastic
CHEMKON, 19(1):7--12
2010
Michael W. Tausch; Amitabh Banerji
 
Elektrolumineszenz in organischen Leuchtdioden
Praxis der Naturwissenschaften - Chemie in der Schule, 59(4):42
2007Michael W. Tausch; Magdalene von Wachtendonk; Claudia Bohrmann-Linde; P. Krollmann; W. Schmitz; J. Wambach
CHEMIE 2000+ Gesamtband mit Kompendium für das Abitur
C.C.Buchner, Bamberg
2002
Claudia Bohrmann; Michael W. Tausch
 
Elektrochemolumineszenz mit unbedenklichen Chemikalien: Das leuchtende Scherblatt
Chemie in unserer Zeit, 36(3):164--167