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- W2279472015 abstract "We describe the application of scanning near–field optical microscopy (SNOM) to the study of the photophysical and self–organization properties of thin films of blends of conjugated polymers, and also to the lateral nanoscale patterning of conjugated–polymer structures. Such thin–film plastic semiconductor nanostructures offer significant potential for use in opto–electronic devices. The implementation of SNOM we employ is the most established form in which a probe with a sub–wavelength aperture is scanned in close proximity to the sample surface. We consider the nature of the near–field optical distribution, which decays within the first ca. 100 nm of these semiconductor materials, and address the identification of topographic artefacts in near–field optical images. While the topographic information obtained simultaneously with optical data in any SNOM experiment enables an easy comparison with the higher–resolution tapping–mode atomic force microscopy, the spectroscopic contrast provided by fluorescence SNOM gives an unambiguous chemical identification of the different phases in a conjugated–polymer blend. Both fluorescence and photoconductivity SNOM indicate that intermixing of constituent polymers in a blend, or nanoscale phase separation, is responsible for the high efficiency of devices employing these materials as their active layer. We also demonstrate a scheme for nano–optical lithography with SNOM of conjugated–polymer structures, which has been employed successfully for the fabrication of poly(p–phenylene vinylene) nanostructures with 160 nm feature sizes." @default.
- W2279472015 created "2016-06-24" @default.
- W2279472015 creator A5021491540 @default.
- W2279472015 creator A5084258709 @default.
- W2279472015 date "2004-04-15" @default.
- W2279472015 modified "2023-10-17" @default.
- W2279472015 title "Near–field microscopy and lithography of light–emitting polymers" @default.
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- W2279472015 doi "https://doi.org/10.1098/rsta.2003.1346" @default.
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