Charge Transport and Sensitized 1.5 渭m Electroluminescence Properties of Full Solution-Processed NIR-OLED based on Novel Er(III) Fluorinated 尾-Diketonate Ternary Complex

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• 作者：Pablo Mart铆n-Ramos ; Carmen Coya ; 脕ngel L. 脕lvarez ; Manuela Ramos Silva ; Carlos Zaldo ; Jos茅 A. Paix茫o ; Pedro Chamorro-Posada ; Jes煤s Mart铆n-Gil
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：May 16, 2013
• 年：2013
• 卷：117
• 期：19
• 页码：10020-10030
• 全文大小：457K
• 年卷期：v.117,no.19(May 16, 2013)
• ISSN：1932-7455

文摘

Solution-processed near-infrared organic light-emitting diodes (NIR-OLEDs) with structure glass/indium鈥搕in oxide/poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate)/Er-complex/Ca/Al based on a novel Er(III) complex, [Er(tfnb)₃(bipy)] (Htfnb = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione and bipy = 2,2鈥?bipyridine) have been manufactured and their properties have been studied. A complete quenching of the organic ligand visible emission is shown, and only the sensitized 1.5 渭m electroluminesce from Er(III) results. From the electrical characteristic we present the mobility dependence on applied voltage using a numerical model, comparing it to poly(9,9-dioctylfluorene), a commercial semiconducting polymer with optical properties close to those of the molecular ligands. The synthesis of the novel complex together with a detailed analysis of its structure elucidated by XRD, ¹H NMR, Raman, and Fourier-transform infrared spectroscopies is presented. A wide-ranging characterization of its photophysical properties in terms of absorption and steady and transient photoluminescence is used to investigate the energy-transfer process from the organic ligand to the central Er(III) ion.