Electroabsorption measurements of polysquaraine

Pomfret, SJ; Monkman, AP; Havinga, EE

Abstract

We report an electroabsorption signal for the main IR-Vis absorption peak in thin films of polysquaraine. Spectra from 1.0 to 2.0 eV at a temperature of 10 K show a positive peak at 1.29 eV, followed by a negative peak at 1.35 eV with vibronic structure on the high energy wing. The results are discussed in terms of a Stark effect on molecular states. Using the results a Stark shift of about 1 meV is calculated, consistent with values for other pi-conjugated polymer systems.

Citation

Pomfret, S., Monkman, A., & Havinga, E. (1996). Electroabsorption measurements of polysquaraine. Synthetic Metals, 78(3), 285-288

• Journal Article Type: Article
• Publication Date: 1996-04
• Journal: Synthetic Metals
• Print ISSN: 0379-6779
• Publisher: Elsevier
• Volume: 78
• Issue: 3
• Pages: 285-288
• Keywords: polysquaraine; electroabsorptionSINGLE-CRYSTALS; EXCITONS; POLYMERS; BAND