COBRA Annual Report 2007 - Technische Universiteit Eindhoven

Opto-Electronic Devices
The preparation and characterization of optoelectronic
devices such as light-emitting diodes
and solar cells, and more recently also IR detectors,
transistors, and memory devices is an important
part of our work. It completes the line moleculemacromolecule-material-machine
and enables
to test new designs and ideas for macroscopic
functionality. In this respect we focus on aspects
of the role of interfaces by studying contacts with
ion-beam techniques and the morphology of the
active layer. We investigate the transport and
injection mechanisms of charges by current voltage
characteristics and impedance spectroscopy.
27
Key publications
J. Gilot, M. M. Wienk, and R. A. J. Janssen, Double
and triple junction polymer solar cells processed
from solution, Appl. Phys. Lett. 90, 143512 (2007)
2 P. T. K. Chin, C. de Mello Donegá, S. S. van Bavel,
S. C. J. Meskers, N. A. J. M. Sommerdijk, and
R. A. J. Janssen, Highly luminescent CdTe/CdSe
colloidal heteronanocrystals with temperature
dependent emission color, J. Am. Chem. Soc. 129,
14880 (2007)
3 A. Mantovani Nardes, M. Kemerink,
R. A. J. Janssen, J. A. M. Bastiaansen,
N. M. M. Kiggen, B. M. W. Langeveld,
A. J. J. M. van Breemen, and M. M. de Kok,
Microscopic understanding of the anisotropic
conductivity of PEDOT:PSS thin films. Adv. Mater.
19, 1196 (2007)
4 D. Wasserberg, S. C. J. Meskers, and
R. A. J. Janssen, Phosphorescent resonant energy
transfer between iridium complexes.J. Phys.
Chem. A. 111, 1381 (2007)
5 F. Verbakel, S. C.J. Meskers, and R. A. J. Janssen,
Electronic memory effects in diodes of zinc
oxide- nanoparticles in a matrix of polystyrene
or poly(3-hexylthiophene), J. Appl. Phys, 102,
083701 (2007)