Duan N, Zhang X, Gao X, Liu S, Xu X, Tao D, Xu Y, Wu J
Institute of Optoelectronics Technology, Laboratory of Materials for Information Storage and Display, Ministry of Railway Key Laboratory, Northern Jiaotong University, 100044 Beijing.
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):267-70.
Pure Green and narrow bandwidth emission from organic electroluminescent device was presented by using a new rare earth complex Tb(asprin)3phen as emissive layer. The structure of the device was ITO/PVK:Tb(asprin)3phen/Al, where PVK was used to improve the film-forming ability and conductivity of Tb(asprin)3phen. The electroluminescent property of the device was studied. It proved that this new kind of rare earth complex has excellent optoluminescent and electroluminescent properties. The electroluminescent mechanism of the device was proposed by measuring and analyzing the emission and excitation spectra of the emissive layer. The excitation spectrum of Tb(asprin)3phen-dispersed PVK film was very similar to that of the PVK. We proposed that the excited carriers of PVK and Tb(asprin)3phen were captured by Tb3+ and light was emitted when the electrons and holes recombined at Tb3+.
通过使用一种新型稀土配合物Tb(阿司匹林)₃phen作为发光层，实现了有机电致发光器件的纯绿色窄带宽发射。该器件的结构为ITO/PVK:Tb(阿司匹林)₃phen/Al，其中PVK用于提高Tb(阿司匹林)₃phen的成膜能力和导电性。研究了该器件的电致发光性能。结果表明，这种新型稀土配合物具有优异的光致发光和电致发光性能。通过测量和分析发光层的发射光谱和激发光谱，提出了该器件的电致发光机理。Tb(阿司匹林)₃phen分散在PVK薄膜中的激发光谱与PVK的激发光谱非常相似。我们提出，PVK和Tb(阿司匹林)₃phen的激发载流子被Tb³⁺捕获，当电子和空穴在Tb³⁺处复合时发光。
