Polymer-fullerene bulk heterojunctions: morphology and its implications on the performance and stability of photovoltaic devices

Samenvatting

Over the last decade, great improvements have been made within the field of
organic BHJ solar cells. It has become clear that the active layer morphology
plays a key role in achieving competitive devices. Within this work, the active
layer morphology of several polymer:PCBM systems is correlated with the
performance and stability of the corresponding solar cells. The morphology of
polymer:fullerene blends has to be tuned to obtain state-of-the-art
photovoltaic performance. But, an important general conclusion of this work is
that the polymer:fullerene blended films are not stable. An increase of
temperature can induce and accelerate PCBM diffusion and phase separation.
In this work, also some solutions for this problem are investigated.

Datum prijs	24 nov. 2010
Originele taal	English
Begeleider	Guy Van Assche (Jury), Jean Manca (Promotor), Marc Gyssens (Jury), Wibren D. Oosterbaan (Jury), R.a.j. Janssen (Jury), Tom Aernouts (Jury), Dirk Vanderzande (Co-promotor) & J. D'haen (Co-promotor)