Photon quantification of electrospun europium-complexes/PMMA submicron fibers

X. M. Zang; L. F. Shen; E. Y B Pun; J. Guo; H. Lin

doi:10.1016/j.jallcom.2017.03.178

Author(s)

X. M. Zang
L. F. Shen
E. Y B Pun
J. Guo
H. Lin

Related Research Unit(s)

Detail(s)

Original language	English
Pages (from-to)	620-626
Journal / Publication	Journal of Alloys and Compounds
Volume	709
Publication status	Published - Jun 2017

Link(s)

DOI	DOI https://doi.org/10.1016/j.jallcom.2017.03.178 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85015946804&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(aa2c2bba-d3a9-4c46-8a47-9c0583c8b8cc).html

Abstract

Electrospun ultrafine fibers of europium-complex/PMMA are prepared and the uniform diameters are estimated to be submicron magnitudes 0.7–1.1 μm. Intense red fluorescence is observed in ultrathin layers of Eu(DBM)₃/PMMA and Eu(DBM)₃Phen/PMMA fibers under ultraviolet (UV) radiation and effectiveness of Phen ligand is verified in enhancing emission behavior. Under 535.8 μW UV-LED pump power, net emission powers are derived to be 5.8 and 36.6 μW, and net emission photon numbers are identified to be 18.2 × 10¹² and 114.6 × 10¹² cps for Eu(DBM)₃/PMMA and Eu(DBM)₃Phen/PMMA fibers, respectively. Simultaneously, total quantum yields reach to 2.80% and 12.94% in fibers not containing and containing Phen ligand. Fluorescence quantification demonstrates the potential of europium-complexes/PMMA submicron fibers as UV–visible conversion layer for flexible solar cells.