Journal
NANO LETTERS
Volume 11, Issue 10, Pages 4275-4281Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202269n
Keywords
Polymer solar cells; helium ion microscopy; P3HT; PCBM
Categories
Funding
- EPSRC [EP/F016433/1]
- Royal Society
- EPSRC [EP/F016433/1, EP/E030602/1, EP/E029892/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E030602/1, EP/E029892/1, EP/F016433/1] Funding Source: researchfish
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We use helium ion microscopy (HeIM) to image the nanostructure of poly(3-hexylthiophene)/[6,6]-phenyl-C(61)-butric acid methyl ester (P3HT/PCBM) blend thin-films. Specifically, we study a blend thin-film subject to a thermal anneal at 140 degrees C and use a plasma-etching technique to gain access to the bulk of the blend thin-films. We observe a domain structure within the bulk of the film that is not apparent at the film-surface and tentatively identify a network of slightly elongated PCBM domains having a spatial periodicity of (20 +/- 4) nm a length of (12 +/- 8) nm.
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