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Number of results
2013 | 1 | 11-23

Article title

Continuous lateral gradients in film morphology for
position sensitive detection and organic solar cell
optimization

Content

Languages of publication

EN

Abstracts

EN
We present a method to fabricate binary organic donor and
acceptor blends exhibiting a controlled lateral gradient in morphology.
Upon combining photometry, ellipsometry and Xray
maps together with photoinduced absorption measurements,
we show how the gradual exposure to solvent vapor
results in a varying degree of polymer crystallinity for the
polythiophene/soluble fullerene system along one direction.
These morphologically graded samples are characterized by
a spectral photoresponse that depends on the specific location
in the area of the device where the light beam impinges,
a property that stands as proof-of-concept for position sensitive
detection. Moreover, we demonstrate that the development
of graded morphologies is an effective one-step method
which allows for fast performance optimization of organic solar
cells. Finally, the appropriateness of eight different solvents
for morphology control via vapor annealing is evaluated
in a time-effective way using the advanced method, which
helps to identify boiling point and solubility as the key processing
parameters.

Contributors

  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),
    Esfera UAB, Bellaterra 08193, Spain
author
  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),
    Esfera UAB, Bellaterra 08193, Spain
author
  • Instituto Madrileño de Estudios Avanzados en Nanociencia
    (IMDEA-Nanociencia), Cantoblanco, 28049 – Madrid, Spain
author
  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),
    Esfera UAB, Bellaterra 08193, Spain
author
  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),
    Esfera UAB, Bellaterra 08193, Spain
  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),
    Esfera UAB, Bellaterra 08193, Spain

References

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Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_oph-2013-0002