Novaled’s new OLED materials set could double OLED lifetimes

May 31, 2012 — Organic light-emitting diode (OLED) company Novaled debuted a class of n-doped electron transport layer (ETL) materials for OLED TV and mobile displays.

Novaled’s new generation of materials includes NET-164 and NET-142 hosts, and NDN-77 and NDN-87 ETL dopants. The air-stable dopants can be paired with either of the host molecules to tailor the OLEDs’ efficiency, voltage and lifetime for a specific display application.

Combinations can address short product lifetimes induced by low driving voltage and higher charge carrier density in the emission zone. Novaled claims that the materials system can double expected lifetime over the previous OLED stack, with air-stable production. The system eliminates complications from air-sensitive N-side dopant materials in mass production and handling.

Novaled uses evaporation processable outcoupling layers — thin NET-61 layers in n-doped ETLs — for maximum efficiency in white PIN OLEDs. Crystallizing outcoupling enhancement layers leads to corrugation of the reflective cathode, reducing plasmon absorption losses.

Novaled will highlight recent advances in OLED display and lighting at the Society for Information Display’s (SID) 49th International Symposium & Exhibition, Booth #3313, June 3-8 in Boston. Dr. Jan Birnstock, VP Technology & Products at Novaled, will present a paper on June 6 about Novaled’s new class of OLED materials for OLED TV and OLED mobile display applications.  Dr. Sven Murano, Product Senior Manager at Novaled, will present a paper on June 7 about Novaled’s outcoupling materials for high-efficiency white OLEDs.

Novaled AG researches, develops, and commercializes technologies and materials that enhance the performance of OLEDs and other organic electronics. Commercially active since 2003, Novaled was founded in 2001 as a spin-off of the Technical University and the Fraunhofer Institute of Dresden. For more information, please visit www.novaled.com.

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