【摘要】 化学氧化多孔硅经cis Ru(bpy) 2 (CN) 2 的乙醇溶液浸泡后 ,发光峰位红移 ,强度减弱 ,激发态寿命缩短 .而在trans Ru(py) 4(CN) 2 溶液中浸泡的氧化多孔硅的发光峰位 ,强度和寿命几乎没有变化 .对比两个染料分子的氧化还原电位和光吸收性质得出 :与trans Ru(py) 4(CN) 2 相比 ,cis Ru(bpy) 2 (CN) 2 有一个与多孔硅发光能量接近的低能级吸收带 ,使得多孔硅纳米粒子向该染料分子传递能量成为可能 ,能量传递的发生引起了发光峰位的红移和激发态寿命的缩短 ,虽然伴随着发光效率的损耗 ,但对有目的地选择染料分子来改变多孔硅的发光峰位和获得激发态寿命尽可能小的多孔硅提供了思路 ,也为深入理解多孔硅的光致发光机制提供了更多的实验事实更多还原

【Abstract】 The sensitizers cis-Ru（bpy）₂（CN）₂ and trans-Ru（py）₄（CN）₂ had been applied to influence the photoluminescence （PL） of the chemically oxidized porous silicon （PS） by attaching them on the surface of the nanoparticles in the PS layers. The PL properties including the peak energy,the decay time and the intensity were affected by the adsorption of cis-Ru（bpy）₂（CN）₂, but not by that of trans-Ru（py）₄（CN）₂. By comparing the chemical and photo-physical properties of cis-Ru（bpy）₂（CN）₂ with those of trans- Ru（py）₄（CN）₂ we deduced that it was the energy transfer between the oxidized PS and the adsorbed cis- Ru（bpy）₂（CN）₂ that induced the change of the PL properties. Although the PL efficiency was decreased, the peak energy could be changed in some degree and the decay time of the PL was shortened. The results clew a possibility for the change of the PL properties of the oxidized PS by an energy transfer process. It also helps to understand the mechanism of the PL.更多还原