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Efficient Electroluminescence from a New Terbium Complex

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posted on 20.05.2003, 00:00 authored by Hao Xin, Fu You Li, Mei Shi, Zu Qiang Bian, Chun Hui Huang
Although lanthanide complexes have distinct advantages for use as light-emitting materials, such as sharp emission bands and 100% quantum efficiency theoretically, their performance was far below what is expected. A new terbium complex was designed and synthesized. Devices using it as an emitter present satisfactory performance, with the highest brightness of 12 000 cd/m2 and power efficiency of 11.3 lm/W, which is nearly 1 order of magnitude higher than what was reported previously. Comparison with analogous complexes indicated that this result originated from the terbium complex's well-balanced charge-transport properties.

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