Absorption and Emission in Quaterthienyl Thin Films

✍ Scribed by H. Sun; Z. Zhao; F.C. Spano; D. Beljonne; J. Cornil; Z. Shuai; J.-L. Brédas

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 195 KB
• Volume: 15
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/adma.200304770

✦ Synopsis

The salient features in the absorption and emission spectra of αT4 aggregates (see Figure) and films are fully accounted for using a model based on linear exciton–phonon coupling and structural defects. In particular, the Davydov splitting is calculated to be of the order of 1 eV, and the unusually small 0–0 emission intensity is attributed to the high sensitivity of the 0–0 intensity to basal plane structural defects.