https://doi.org/10.1140/epjb/e2002-00241-7
Stray-light induced artefacts in absorption spectra of crystalline oligothiophenes
1
INFM-Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, via Cozzi 53, 20125 Milano,
Italy
2
School of Pharmaceutical Science, Kingston University, Kingston upon Thames, KT1 2EE, UK
Corresponding author: a adele.sassella@mater.unimib.it
Received:
10
April
2002
Published online:
13
August
2002
The absorption spectra of oligothiophene single crystals and thin films are discussed in terms of stray light induced experimental artefacts. After typical experimental problems have been overcome, absorption spectra can be collected over a wide spectral range in the UV-Vis region that has often not been included in the literature data. A clear similarity is found between the absorption spectra of single crystals and highly ordered thin films.
PACS: 78.40.Me – Organic compounds and polymers / 71.35.Cc – Intrinsic properties of excitons; optical absorption spectra
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
