Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10j3002m&link_type=abstract
New Journal of Physics, Volume 10, Issue 10, pp. 103002 (2008).
Physics
3
Scientific paper
In this paper, we demonstrate the first all-organic, transparent, flexible, versatile colour displays based upon triplet triplet annihilation assisted photon energy upconversion in viscous polymeric matrix. The devices work with ultra-low excitation intensities down to 20 mW cm-2 red or near-IR light. The displays are based on metallated-porphyrin sensitizers in combination with emitters dispersed in a transparent polymeric matrix and are driven by galvo-scanned laser diodes. The displays have external quantum yield as high as 3.2%. The response time can be adjusted to specific application requirements—up to 80 μs allowing kHz-refreshment rate of the displayed information. It is possible to easily tune the optical density of the screens in order to obtain a desired transmittance for the excitation beam. We demonstrate the ability to achieve multicolour emission, using only one excitation source. There are practically no display size limitations.
Baluschev Stanislav
Miteva Tzenka
Nelles Gabriele
Yakutkin Vladimir
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