H-shaped oligofluorenes for highly air-stable and low-threshold non-doped deep blue lasing

Abstract:

H-shaped oligofluorenes as gain media exhibit excellent photo- (large robustness against oxidation) and thermal stabilities in ambient atmosphere for large σe and low-threshold (0.22 nJ pulse-1) deep blue distributed feedback (DFB) lasers. Their amplified spontaneous emission (ASE) thresholds increase less than 3-fold and the emission spectra exhibit almost no shift with film samples annealed up to 200 °C in open air. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Año de publicación:

2014

Keywords:

• oligofluorenes
• organic lasers
• fbkp_rediel-crafts reaction
• organic semiconductors
• photo/thermal stability

Fuente:

scopus