| Issue |
Eur. Phys. J. Appl. Phys.
Volume 36, Number 3, December 2006
|
|
|---|---|---|
| Page(s) | 241 - 244 | |
| Section | Nanomaterials and Nanotechnologies | |
| DOI | https://doi.org/10.1051/epjap:2006149 | |
| Published online | 10 January 2007 | |
https://doi.org/10.1051/epjap:2006149
Influence of the morphology of organic heterojunction on the photovoltaic cell performance*
Institute of Macromolecular Chemistry, Academy of Sciences of the Czech
Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
Received:
25
July
2006
Revised:
20
September
2006
Accepted:
28
September
2006
Published online:
10
January
2007
We present a series of organic photovoltaic (PV) cells
based on the bulk-distributed heterojunction where 
-conjugated polymer
poly[1-(4-trimethylsilylphenyl)-2-phenylvinylene], PSDPhV, acts as the donor
upon photoexcitation and the substituted perylene based low-molecular-weight
compound: N,N`-di(pent-3-yl)-perylene-3,4:9,10-bis(dicarboximide),
DPe-PTCDI, as the acceptor of photogenerated electrons. According to both
absorption spectra and AFM images of the thin films spin-coated from
solution of DPe-PTCDI and PSDPhV in toluene, the DPe-PTCDI is molecularly
dissolved in conjugated polymer matrix. Upon exposition of layers to toluene
vapors, microcrystals of DPe-PTCDI are progressively formed. The influence
of the morphology of DPe-PTCDI inside the polymer matrix on PV cell
performance is investigated.
PACS: 73.50.Pz – Photoconduction and photovoltaic effects / 73.50.Gr – Charge carriers: generation, recombination, lifetime, trapping, mean free paths / 73.61.Ph – Polymers; organic compounds
© EDP Sciences, 2006
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