6533b85dfe1ef96bd12bf235
RESEARCH PRODUCT
Template-assisted fabrication of free-standing nanorod arrays of a hole-conducting cross-linked triphenylamine derivative: toward ordered bulk-heterojunction solar cells.
Niko HaberkornPatrick TheatoJochen S. Gutmannsubject
FabricationMaterials scienceOrganic solar cellNanoporousbusiness.industryGeneral EngineeringGeneral Physics and AstronomyNanotechnologyTriphenylaminePolymer solar cellchemistry.chemical_compoundchemistryOptoelectronicsGeneral Materials ScienceNanorodWettingbusinessCuring (chemistry)description
Free-standing nanorod arrays of a thermally cross-linked semiconducting triphenylamine were fabricated on conductive ITO/glass substrates via an anodic aluminum oxide (AAO) template-assisted approach. By using a solution wetting method combined with a subsequent thermal imprinting step to fill the nanoporous structure of the template with a cross-linkable triphenylamine derivative, a polymeric replication of the AAO was obtained after thermal curing and selective removal of the template. To obtain well-aligned and free-standing nanorod arrays, aggregation and collapse of the nanorods were prevented by optimizing their aspect ratio and applying a freeze-drying technique to remove the aqueous medium after the etching step. Because of their electrochemical properties and their resistance against organic solvents after curing, these high density nanorod arrays have potential application in organic photovoltaics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-05-19 | ACS nano |