Tuneability of the ASE in thin organic films

A. K. Sheridan, G. A. Turnbull, D. D.C. Bradley, I. D.W. Samuel

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We show that the amplified spontaneous emission (ASE) in poly[2-methoxy, 5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) can be tuned by controlling the film thickness and the excitation intensity. For sufficiently thin films the peak position of the ASE is determined by the cut-off wavelength for the waveguide and is shifted to shorter wavelengths with decreasing film thickness. Increasing excitation intensity causes a blue-shift of the emission spectra. We also show that excitation wavelength has no effect on the position of the ASE.
Original languageEnglish (US)
JournalSynthetic Metals
Volume121
Issue number1-3
DOIs
StatePublished - Mar 15 2001
Externally publishedYes

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