Upconversion photoluminescence in poly(ladder-type-pentaphenylene) doped with metal (II)-octaethyl porphyrins

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/18163

Title:	Upconversion photoluminescence in poly(ladder-type-pentaphenylene) doped with metal (II)-octaethyl porphyrins
Authors:	Baluschev, S. Keivanidis, Panagiotis E. Wegner, G. Jacob, J. Grimsdale, A. C. Müllen, K. Miteva, T. Yasuda, A. Nelles, G.
Major Field of Science:	Engineering and Technology
Field Category:	Mechanical Engineering
Keywords:	Absorption;Doping (additives);Optimization;Photoemission;Photoluminescence;Platinum compounds;Porphyrins
Issue Date:	7-Feb-2005
Source:	Applied Physics Letters, 2005, vol. 86, no. 6, pp. 1-3
Volume:	86
Issue:	6
Start page:	1
End page:	3
Journal:	Applied Physics Letters
Abstract:	We report on the optimization of the upconversion photoluminescence in films of conjugated polymers doped with platinum porphyrin. The upconversion emission was observed to take place at pump intensities as low as 0.5 kWcm2. Comparison between the photoluminescence integral intensity of polyfluorene and ladder-type pentaphenylene polymer shows a five-fold increase of the efficiency of the upconversion process for the latter. The higher upconversion efficiency can be partially attributed to the reduced reabsorption of the photoluminescence in the case of the ladder-type pentaphenylene matrix. © 2005 American Institute of Physics.
ISSN:	00036951
DOI:	10.1063/1.1857073
Rights:	© American Institute of Physics
Type:	Article
Affiliation :	SONY
Appears in Collections:	Άρθρα/Articles

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