Xu Deng-hui, Deng Zhen-bo, Zhang Zhi-feng, Zhang Meng-xin, Liang Chun-jun, Wang Rui-fen
Institute of Optoelectronics, Key Laboratory of Information Storage and Display, Beijing Jiaotong University, Beijing, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2004 Dec;24(12):1511-3.
Excitation and photoluminescence (PL) spectra of the mixture terbium complex and PVK were investigated. The excitation spectrum of Tb complex dispersed PVK film is very similar to that of the pure PVK film, indicting that energy transfer occurs from PVK to Tb complex. For the overlap between the excitation spectrum of Tb complex dispersed PVK film and the PL spectrum of PVK film is very little, the ratio of occurrence for Förester energy transfer is very little. The emission of Tb3+ mainly comes from the excited ligand, which comes from the ligand capture of electron-hole pairs. In the electroluminescence (EL) spectra, the emission of PVK is completely restrained and only emission of Tb3+ is occured, which origins from the different mechanism in comparison with photoluminescence.
研究了铽配合物与聚乙烯咔唑（PVK）混合物的激发光谱和光致发光（PL）光谱。分散有铽配合物的PVK薄膜的激发光谱与纯PVK薄膜的激发光谱非常相似，这表明能量从PVK转移到铽配合物。由于分散有铽配合物的PVK薄膜的激发光谱与PVK薄膜的PL光谱之间的重叠非常小，福斯特能量转移发生的比例非常小。Tb3+的发射主要来自激发态配体，而激发态配体来自电子-空穴对的配体捕获。在电致发光（EL）光谱中，PVK的发射被完全抑制，仅出现Tb3+的发射，这与光致发光相比源于不同的机制。
