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Silver Zeolite Composites-Based LEDs: A Novel Solid-State Lighting Approach

Silver Zeolite Composites-Based LEDs: A Novel Solid-State Lighting Approach


Silver clusters incorporated in a zeolite matrix represent a promising alternative for rare earth phosphors, organic dyes, and quantum dots as emitters in organic and hybrid organic/inorganic light-emitting diodes (OLEDs). Compared to other existing types of emitters, they combine an excellent stability to oxygen and humidity with a high luminescence quantum yield and color tunability. This study reports on the first use of these silver exchanged zeolites embedded in polyvinyl carbazole (PVK), which is expected to act as a conducting matrix, as emitters in a single-layer OLED. It is demonstrated that the introduction of these Ag zeolites leads to electroluminescence bands that clearly differ from pristine PVK OLEDs as well as from the photoluminescence spectra of the Ag zeolites. The current density and the spectral properties observed in these devices are strongly influenced by the zeolite silver loading, paving the way for a new type of easily tunable hybrid and cost-effective OLEDs.

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Our company is engaged in the implementation and sale of certified natural zeolite of European origin and Greek aluminous diatomite. The zeolite content in clinoptilolite for agricultural and livestock use is at least 85% and is available in various granulometries depending on its use. Our goal is to spread the innumerable applications of these natural inert minerals, resulting in the immediate benefit of their properties in areas such as agriculture, livestock farming, the environment and human health. We ship the same day across Greece and the rest of Europe from our warehouse in Thessaloniki and Nea Orestiada. We offer wholesale and retail prices.

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