Photoluminescent and Electroluminescent Properties of a New Rare Earth Terbium Complex
WANG Li1, ZHANG Xi-qing1，LIN Peng1, XIONG De-ping1, HUANG Shi-hua1，YU Tian-zhi2
1. Institute of Optoelectronics Technology, Laboratory of Materials for Information Storage and Display, Beijng Jiaotong University, Beijing 100044，China 2. College of Chemistry and Chemistry Engineering, Lanzhou University, Lanzhou 730000，China
Abstract：Pure green and narrow bandwidth emission from an organic electroluminescent device was presented by using a new rare earth terbium (Ⅲ) complex as the emissive layer. The structure of the device was ITO/PVK/Tb/PBD/LiF/Al. It was proved that this new kind of rare earth complex has excellent photoluminescent and electroluminescent properties. The electroluminescent spectrum of the device was very similar to that of the terbium (Ⅲ) complex film. The electroluminescent mechanism of the device was proposed by measuring and analyzing the spectra and electroluminescent property of the device. It is proposed that the excited carriers of PVK and PBD were captured by Tb3+ and light was emitted when the electrons and holes recombined at Tb3+.
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