Effect of different solvents on the performance of organic light-emitting device based on red-fluorescent ACY dye by spin coating method

Shuangjiang Yu; Junsheng Yu; Hong Wang; Yadong Jiang

doi:10.1117/12.865782

22 October 2010 Effect of different solvents on the performance of organic light-emitting device based on red-fluorescent ACY dye by spin coating method

Shuangjiang Yu, Junsheng Yu, Hong Wang, Yadong Jiang

Author Affiliations +

Proceedings Volume 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology; 76583S (2010) https://doi.org/10.1117/12.865782
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

A small-molecular red-fluorescent dye of [7-diethylamino-3-(2-thienyl)chronmen-2-ylidene]-2,2-dicyanoviny-lamine (ACY) has been blended into blue-emitting poly(N-vinylcarbazole) (PVK) by using different solvents of chloroform and 1,2-dichloroethane. Photoluminescence characteristic of solvent effects were investigated mainly from the aspect of solvent polarity. To demonstrate the solvent effects in organic light emitting devices (OLEDs), devices with a structure of indium-tin-oxide (ITO)/PVK: ACY (x wt %)/tris(8-quinolinolato) aluminum (Alq₃)/Mg: Ag were fabricated, in which the weight doping ratios are x = 0.3, 0.5 and 0.7. Using spin coating method, a blending system of PVK: ACY is dissolved in both chloroform and 1,2-dichloroethane with various doping concentrations. As a result, by choosing chloroform as solvent, a high electroluminescent (EL) performance device with a maximum luminance of 7698 cd/m² at a driving voltage of 15.5 V was obtained, with a concentration proportion of PVK: ACY at 1000: 7. In the EL spectra of the OLEDs, red and green fluorescence of ACY and Alq₃ were detected. It was found that by using 1,2-dichloroethane as a solvent, fluorescent quenching emerged with the enhancement of doping concentration. Energy transfer and Alq₃ cations quencher theories were used to discuss different solvent effects on OLEDs.

Citation Download Citation

Shuangjiang Yu, Junsheng Yu, Hong Wang, and Yadong Jiang "Effect of different solvents on the performance of organic light-emitting device based on red-fluorescent ACY dye by spin coating method", Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76583S (22 October 2010); https://doi.org/10.1117/12.865782

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