【摘 要】
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Absorption spectra of BiSbO4 are studied. The electronic structure calculated by the DFT shows that BiSbO4 is a semiconductor, with direct band gap 2.96 eV, whi
【机 构】
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State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute o
论文部分内容阅读
Absorption spectra of BiSbO4 are studied. The electronic structure calculated by the DFT shows that BiSbO4 is a semiconductor, with direct band gap 2.96 eV, which is consistent with UV-visible diffuse reflectance experiment.The host lattice emission band is located at 440 nm under VUV excitation. Eu3+ and Pr3+ doped samples have high luminescence efficiency in emitting red and green light, respectively. From the partial density of states,Eu3+ doped emitting spectrum, and the host crystal structure parameters, the relationship between structure and optical properties is discussed. It is found that the Eu3+ ions occupied Bi3+ sites, and there could be an energy transfer from Bi3+ ions to RE3+ ions.
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