Concentration effect of dye dopant in organic light emitting diodes

Lu Li; Junsheng Yu; Shuangling Lou; Yadong Jiang

doi:10.1117/12.831019

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21 May 2009 Concentration effect of dye dopant in organic light emitting diodes

Lu Li, Junsheng Yu, Shuangling Lou, Yadong Jiang

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Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728236 (2009) https://doi.org/10.1117/12.831019
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

The influence of concentration effect of fluorescent dye dopant 5,6,11,12-tetraphenylnaphthacene (Rubrene) molecules on the performance of small organic light-emitting diodes (OLEDs) has been investigated. An ultrathin dye layer is deposited at the interface of host material via thermal vacuum deposition, dopant concentration is enhanced and the effect of concentration quenching is more obvious. Also, the photoluminescence (PL) spectra of Rubrene solution are provided to focus on concentration quenching. The devices have doping layer and ultrathin layer are compared via their optoelectronic performance. It has been found from the electroluminescence (EL) spectra of the devices that the concentration quenching effect of the doping dyes could be modulated through varying the thickness of ultrathin dye layer.

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Lu Li, Junsheng Yu, Shuangling Lou, and Yadong Jiang "Concentration effect of dye dopant in organic light emitting diodes", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728236 (21 May 2009); https://doi.org/10.1117/12.831019

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