Quenching of Fluorescence in Europium β-Diketone Chelate Solutions and Its Application to Display Devices
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概要
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The quenching of ultraviolet-stimulated fluorescence by voltage application was investigated using sandwich-type cells prepared with DMF (dimethylformamide) solutions of pyrrolidinium salts of europium tetrakis benzoyltrifluoroacetonate.The red fluorescence is quenched when a negative voltage is applied to a transparent electrode exposed to ultraviolet irradiation.Quenching of the fluorescence is also observed with some delay after applying a voltage with reverse polarity.The quenching mechanism is discussed using a simple model in which the chelated molecules diffuse with the reduced nonradiative divalent europium ions from the negative electrode.This phenomenon can be applied to display devices;the contrast ratio, the response and recovery times, and a method for reducing the recovery time are described.
- 社団法人応用物理学会の論文
- 1979-07-05
著者
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Itasaka Yoshiaki
Department Of Electronic Engineering Mining College Akita University
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Sato Susumu
Department Of Electrical And Electronic Engineering Akita University
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