Electrical doping for high performance organic light emitting diodes

Jang-Joo Kim; Dong-Seok Leem; Jae-Hyun Lee

doi:10.1117/12.815261

12 February 2009 Electrical doping for high performance organic light emitting diodes

Jang-Joo Kim, Dong-Seok Leem, Jae-Hyun Lee

Proceedings Volume 7213, Organic Photonic Materials and Devices XI; 721303 (2009) https://doi.org/10.1117/12.815261
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

Novel p-dopants of ReO₃ and CuI, and an n-dopant of Rb₂CO₃ have been developed. Among many other p-dopants, ReO₃ possesses superior characteristics of low temperature deposition, efficient charge generation and increasing the device lifetime. The absorption intensity of charge transfer complexes and current-voltage characteristics revealed that charge generation in p-doped hole transporting layers is more effective when the work function of the dopant is larger. High performance OLEDs have been fabricated using the p- and n-dopants, including the low driving voltage p-i-n phosphorescent OLEDs, high power efficiency of tandem OLEDs using ReO₃ doped NPB/ReO₃ (1 nm)/Rb₂CO₃ doped Bphen as the interconnection unit, and top emission OLEDs using CuI doped NPB as the hole injection layer from Ag electrode.

Citation Download Citation

Jang-Joo Kim, Dong-Seok Leem, and Jae-Hyun Lee "Electrical doping for high performance organic light emitting diodes", Proc. SPIE 7213, Organic Photonic Materials and Devices XI, 721303 (12 February 2009); https://doi.org/10.1117/12.815261

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