Premium
Photoluminescence enhancement in organic microcavity structures
Author(s) -
Dirr Siegfried,
Wiese Stefan,
Johannes HansHermann,
Böhler Achim,
Ammennann Dirk,
Kowalsky Wolfgang
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981250105
Subject(s) - photoluminescence , luminescence , materials science , laser linewidth , substrate (aquarium) , planar , full width at half maximum , thin film , europium , aluminium , optoelectronics , layer (electronics) , emission spectrum , spectral line , analytical chemistry (journal) , optics , chemistry , laser , nanotechnology , organic chemistry , physics , composite material , oceanography , computer graphics (images) , astronomy , computer science , geology
We have studied the photoluminescence properties of the metal chelates aluminum‐tris(8‐hydroxychinoline) (Alq 3 ) and tris(4,4,4‐trifluoro‐1‐(2‐thienyl)‐1,3‐butanediono)‐1,10‐phenanthroline europium(III) (Eu(TTFA) 3 Phen) sandwiched between a planar Fabry‐Perot microcavity structure. A strong influence of the position of the emission thin film on the luminescence spectra has been observed. The emission intensity normal to the substrate surface is drastically enhanced by an order of a magnitude if the active layer is placed at the antinode of the standing wave in the cavity. In comparison to non‐resonant Alq 3 structures, the FWHM of the spectrum is reduced from 100 nm to about 20 nm. We also show that the Eu(TTFA) 3 Phen luminescence is spacially directed due to the inherent linewidth of only Sum.