Preparation and Properties of Europium（Ⅲ） Tetrakis（Hexafluoroacetylacetone） Complex with Tetraphenylphosphonium as Counter Ion Doped into Polymethyl Methacrylate Films

doi:10.19894/j.issn.1000-0518.230296

Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (5): 607-615.DOI: 10.19894/j.issn.1000-0518.230296

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Preparation and Properties of Europium（Ⅲ） Tetrakis（Hexafluoroacetylacetone） Complex with Tetraphenylphosphonium as Counter Ion Doped into Polymethyl Methacrylate Films

Yuan WANG, Huan-Rong LI()

School of Chemical Engineering，Hebei University of Technology，Tianjin 300130，China

Received:2023-09-26 Accepted:2024-01-10 Published:2024-05-01 Online:2024-06-03
Contact: Huan-Rong LI
About author:lihuanrong@hebut.edu.cn
Supported by:
the National Natural Science Foundation of China(22175053);the Central Government Guides Local Science and Technology Development Fund Projects(206Z1401G)

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Abstract

Abstract:

In this paper， the complex Eu（HFA）₄TPP （HFA=Hexafluoroacetylacetone， TPP=tetraphenylphosphonium） with high photoluminescence quantum yield and improved stability is prepared. The steric effect on luminescence performance is revealed by studying the crystal structures and luminescence properties of Eu（HFA）₄Na and Eu（HFA）₄TPP complexes. On this basis， the luminescent films are obtained by incorporating Eu（HFA）₄TPP complex with high loading content into polymethyl methacrylate （PMMA） matrix， which shows a visible-light excitation window （240~450 nm） and high photoluminescence quantum yield of 60.54%. In addition， the luminescent solar concentrators （LSC） in Eu（HFA）₄TPP/PMMA film conformation is prepared. The optical conversion efficiency contribution of Eu（HFA）₄TPP/PMMA film to the LSC is 0.95% in the case of the G=1.87， holding promise in photovoltaic fields.

Key words: Lanthanide complexes, Luminescent films, Photo stability, Visible-light excitation, Luminescent solar concentrators

CLC Number:

O611

Yuan WANG, Huan-Rong LI. Preparation and Properties of Europium（Ⅲ） Tetrakis（Hexafluoroacetylacetone） Complex with Tetraphenylphosphonium as Counter Ion Doped into Polymethyl Methacrylate Films[J]. Chinese Journal of Applied Chemistry, 2024, 41(5): 607-615.

Figures/Tables 6

Fig.1 （A） Fragment of the crystal structure and （B） the crystal packing of Eu（HFA）4TPP

Fig.2 （A） Excitation spectra，（B） emission spectra and （C） luminescence decay curves of Eu（HFA）4TPP and Eu（HFA）4Na

Fig.3 Images of Eu（TTA）4TPP/PVA and Eu（HFA）4TPP/PVA films before and after UV aging under day light （left） and 365 nm UV irradiation （right）

Fig.4 UV-Vis curves of Eu（HFA）4TPP/PMMA films with different mass fraction of the complex

Fig.5 （A） The UV absorption spectrum of the Eu（HFA）4TPP/PMMA film；（B） Excitation spectra，（C） emission spectra and （D） luminescence decay curve of the Eu（HFA）4TPP/PMMA films with different mass fraction of the complex； Inset in C： digital photograph of Eu（HFA）4TPP/PMMA film under 365 nm UV lamp

Fig.6 （A） The photograph of photoelectric performance measurement for Eu（HFA）4TPP/PMMA@LSC；（B） The excitation spectrum of Eu（HFA）4TPP/PMMA@LSC with 80% loading and AM1.5G spectrum；（C） J-V curves of the polycrystalline silicon solar cell in the study；（D） J-V curves of Eu（HFA）4TPP/PMMA@LSC with mass fraction of the complex

References 27

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Preparation and Properties of Europium（Ⅲ） Tetrakis（Hexafluoroacetylacetone） Complex with Tetraphenylphosphonium as Counter Ion Doped into Polymethyl Methacrylate Films

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