Issue 31, 2012
From the journal:

Physical Chemistry Chemical Physics

Dynamic doping and degradation in sandwich-type light-emitting electrochemical cells†

Sebastian B. Meier,ab   David Hartmann,b   Daniel Tordera,c   Henk J. Bolink,*c   Albrecht Winnackera  and  Wiebke Sarfert*b  

* Corresponding authors

a Department of Materials Science VI: Materials for Electronics and Energy Technology, Friedrich-Alexander University of Erlangen-Nuremberg, Martensstr. 7, DE-91058 Erlangen, Germany

b Siemens AG, Corporate Technology, CT T DE HW3, GTF Organic Electronics, Günther-Scharowsky-Str. 1, DE-91058 Erlangen, Germany
E-mail: wiebke.sarfert@siemens.com
Fax: +49 9131 7 32209
Tel: +49 9131 7 34586

c Instituto de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán 2, ES-46980 Paterna, Spain
E-mail: henk.bolink@uv.es
Fax: +34 96 354 32 73
Tel: +34 96 354 44 16

Abstract

Photoluminescence spectroscopy has been performed in situ during device operation and after switch-off on ionic transition metal complex (iTMC)-based sandwich-type light-emitting electrochemical cells (LECs). It is demonstrated that the photoluminescence of the LECs decreases with increasing operating time. For operating times up to three hours the decline in photoluminescence is fully recoverable after switching off the bias. These results imply that doping of the iTMC layer is responsible, not only, for the turn-on of LECs but also for their lifetimes.

Graphical abstract: Dynamic doping and degradation in sandwich-type light-emitting electrochemical cells

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Article information

DOI
https://doi.org/10.1039/C2CP41323J
Article type
Communication
Submitted
25 Apr 2012
Accepted
21 Jun 2012
First published
22 Jun 2012

Phys. Chem. Chem. Phys., 2012,14, 10886-10890

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Dynamic doping and degradation in sandwich-type light-emitting electrochemical cells

S. B. Meier, D. Hartmann, D. Tordera, H. J. Bolink, A. Winnacker and W. Sarfert, Phys. Chem. Chem. Phys., 2012, 14, 10886 DOI: 10.1039/C2CP41323J

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