Oligomer molecules: first-principles investigation of the optical properties and applications to luminescent devices

D. Pisignano, F. Della Sala, L. Persano, G. Gigli, R. Cingolani, G. Barbarella and L. Favaretto

Physica A: Statistical Mechanics and its Applications, 2004, vol. 339, issue 1, 106-111

Abstract: Oligomer molecules offer a number of advantages for the study of their photo-physical properties and for the application to optoelectronic devices. We investigated the optical properties of a substituted quinquethiophene by first-principles calculations, determining the absorption and the emission energies, and compared these to the experimental data. The optical gain properties of the oligomer were exploited for the realization of a solid-state laser device exhibiting single-mode emission at 637nm, with a full-width half-maximum of about 0.7nm and a pump fluence threshold as low as 220μJ/cm2.

Keywords: First-principles calculations; Time-dependent density functional theory; Optical properties; Oligothiophenes; Solid-state lasers (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:339:y:2004:i:1:p:106-111

DOI: 10.1016/j.physa.2004.03.050

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