Enhanced Performance of Organic Light Emitting Diodes using LiF Buffer Layer

Abstract

Since the invention of organic electroluminescent devices, a great deal of effort has been made to improve their performance. Reducing the barrier and optimizing charge injection is crucial for efficient and bright Organic Light Emitting Diodes (OLEDs). We report the performance of OLEDs with ITO/TPD/Alq3/Al structure by inserting LiF both at electrode-organic interfaces and organic-organic interface. We elucidate the mechanism of the LiF buffer layer inserted at different interfaces. The device with LiF as a cathode injection layer shows improved luminescence and steeper IV characteristics.

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Correspondence to Omkar Vyavahare.

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Vyavahare, O., Hailstone, R. Enhanced Performance of Organic Light Emitting Diodes using LiF Buffer Layer. MRS Online Proceedings Library 1154, 584 (2008). https://doi.org/10.1557/PROC-1154-B05-84

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