A near-field microspectroscopy system was developed for fluorescence analyses of tetracene microcrystals. Topographies, fluorescence images, and spectra of microcrystals with size of sub μm ∼ a few μm were measured with ∼100 nm spatial resolution. The relative intensities of two emission bands of the fluorescence spectra were shown to be different between individual microcrystals. The dependence of fluorescence spectra upon crystal thickness was found by correlating topographies with fluorescence images, and discussed in view of the distribution of defect-sites at the surfaces and interfaces.
|Number of pages||6|
|Journal||Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals|
|State||Published - 1 Jan 1998|
|Event||Proceedings of the 1998 TAPPI Metered Size Press Forum - New Orleans, LA, USA|
Duration: 30 Apr 1998 → 2 May 1998
- Fluorescence spectroscopy
- Near-field scanning optical microscope