Managing the luminescence efficiency of the organic compounds of europium(III) through preparation technology

Olga Bordian; Victor Verlan; Ion Culeac; Ion Bulhac; Vera Zubarev

doi:10.1117/12.2571186

31 December 2020 Managing the luminescence efficiency of the organic compounds of europium(III) through preparation technology

Olga Bordian, Victor Verlan, Ion Culeac, Ion Bulhac, Vera Zubarev

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Proceedings Volume 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X; 1171817 (2020) https://doi.org/10.1117/12.2571186
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies 2020, 2020, Online Only

Abstract

A series of coordination organic compounds based on the trivalent Eu³⁺ ion were synthesized and optimized: Eu(o- MBA)₃phen, Eu(DBM)₃(Ph₃PO)₁·H₂O and Eu(TTA)₃(Ph₃PO)₂. The efficiency of the photoluminescence (PL) emission of these coordination compounds depend on preparation technology, specifically on the optimal choice of the ligands. The photoluminescence spectrum measured in the range 500 – 750 nm exhibits a number of narrow (atomic-like) emission bands with the FWHM less than 10 nm. These PL emission bands are attributed to optical transitions ⁵D₀ → ⁷F_j , j 0...4 in the 4f orbital of the, ion. PL experimental results were analyzed in the framework of Judd-Ofelt theory and the characteristic luminescence parameters were obtained: PL lifetime constant, quantum yield, Ω coefficient, the probability A_{i j} for electric dipole transitions, etc.

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Olga Bordian, Victor Verlan, Ion Culeac, Ion Bulhac, and Vera Zubarev "Managing the luminescence efficiency of the organic compounds of europium(III) through preparation technology", Proc. SPIE 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X, 1171817 (31 December 2020); https://doi.org/10.1117/12.2571186

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KEYWORDS

Europium

Luminescence

Ions

Absorption

Bioalcohols

Quantum efficiency

Light sources

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