Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE

Materials such as the conductive carbon paste and processes like TCO layer laser scribing have been
tuned for best performance in view of a test production of 30 x 30 cm sized monolithic dye solar
modules (as demonstrators).
Thanks to the inhouse SEM capacity, the stacking of the active layers was analysed, such as the
nano-TiO2, the ZrO2 spacer and both carbon layers (with Pt-catalyst and conductive graphite) making
up the monolithic test cell.
NAPOLYDE, T. Meyer, Solaronix
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The interface between the TiO2
layer composed of 15 nm sized
anatase crystals and the zirconia
layer is clearly visible in the SEM
picture.
The flaky conductive graphite is
stacked on top of the 80 nm ø
zirconia particles. Most of the
observed layer delamination
occurred and this interface,
required a reformulation of the
carbon paste having more
crosslinking agents to increase
the adhesion.
6/8