Effects of passivation and desiccant on organic light-emitting diodes

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Abstract

The lifetime of organic light-emitting diodes (OLEDs) strongly depends on removing H2O from the passivation atmosphere. Therefore, practical OLEDs require excellent passivation to block invading moisture and desiccant to remove moisture in a metal can or a glass cap. We observed the emitting area in OLEDs passivated by a glass cap. Dark spots in OLEDs passivated without a desiccant and grew more rapidly than those in OLEDs passivated with a desiccant. We speculated that the difference between both samples is caused not only by the imperfection of our passivation, but also occurrence of H2O from the OLED device.

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Mori, T., Okada, Y., Tamano, K., & Mizutani, T. (2002). Effects of passivation and desiccant on organic light-emitting diodes. Journal of Photopolymer Science and Technology, 15(2), 243–246. https://doi.org/10.2494/photopolymer.15.243

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