Confocal Raman microscopy in the lattice phonon region has been used to study the polymorphism of the organic semiconductor 5,6,11,12-tetraphenyl-tetracene (rubrene). Following literature guidelines, crystals of rubrene have been prepared using a number of solution growth and vapour deposition methods, obtaining samples of different morphologies which could be related to the various polymorphs of this compound. The technique has enabled us an easy and non invasive identification of the three known polymorphs and of their phase homogeneity with a lateral spatial resolution below 1 μm.
|Number of pages||6|
|Journal||Solid State Sciences|
|Early online date||22 Jul 2017|
|Publication status||Published - Sep 2017|
- lattice phonons
- organic semiconductors
- Raman microscopy