Abstract
We have used airbrush spray deposition to fabricate organic photovoltaic devices with an active layer composed of a blend of poly(3-hexylthiophene) and [6,6]-phenyl- C61 butyric acid methyl ester. Working devices were prepared in ambient conditions from a variety of common organic solvents; active layers prepared from chlorobenzene exhibit improved homogeneity, resulting in narrower distributions of the relevant device parameters. Further studies on devices prepared from chlorobenzene showed that annealing at 120 °C for 10 min resulted in optimum performance, and that an active layer thickness of 150 nm resulted in a maximum efficiency of 2.35% under AM1.5 illumination at 1 sun.
Original language | American English |
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Article number | Article No. 033301 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 3 |
DOIs | |
State | Published - 2008 |
NREL Publication Number
- NREL/JA-270-42633
Keywords
- annealing
- converters
- electrical properties and parameters
- heterostructures
- photovoltaics
- polymers
- solar cells
- spin cast method
- spin coating
- welding