Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Laser characteristics of a family of benzene-cored star-shaped oligofluorenes

Tsiminis, Georgios and Montgomery, Neil A. and Kanibolotsky, Alexander L. and Ruseckas, Arvydas and Perepichka, Igor F. and Skabara, Peter J. and Turnbull, Graham A. and Samuel, Ifor D. W. (2012) Laser characteristics of a family of benzene-cored star-shaped oligofluorenes. Semiconductor Science and Technology, 27 (9). ISSN 0268-1242

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

A family of star-shaped conjugated oligofluorene molecules based around a central benzene core is studied with the aim of identifying how changes in molecular structure can affect the laser performance of organic materials. As the oligofluorene arm length increases the optical transitions are found to move to longer wavelength, there is an increase in photoluminescence quantum yield and a corresponding reduction in the excitation density for amplified spontaneous emission. Distributed-feedback lasers based on these materials are tunable across 402-462 nm with lasing thresholds as low as 1.1 kW cm(-2) and efficiencies as high as 6.6%. The laser performance is compared with that of family of star-shaped molecules with different core structure. This shows that a reduction in intermolecular interactions is very important to achieving high performance lasing in organic semiconductors.

Item type: Article
ID code: 41361
Keywords: polymers, organics, laser characteristics, phosphorescence spectra , quantum optics, lasers, Chemistry, Materials Chemistry, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Condensed Matter Physics
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Technology and Innovation Centre > Photonics
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 09 Oct 2012 10:59
Last modified: 05 Sep 2014 17:54
URI: http://strathprints.strath.ac.uk/id/eprint/41361

Actions (login required)

View Item