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自然界天然存在的微结构可以有效提高材料的性能,特别是分级纳米孔结构被证明可以有效增加材料的光吸收效率。为了提高硅酸钙材料的发光性能,以树叶为模板所制备了Eu3+掺杂硅酸钙发光材料,并进行了光吸收、发光和余辉发光性能的测试。研究结果表明,以树叶为模板所制备的Eu3+掺杂硅酸钙发光材料具有2.5nm、3.0nm、10.0～20.0nm孔径的生物分级孔结构,可以有效增加发光材料的表面积和孔容,使材料有更多的光接触面积来增加光子的吸收,从而增加发光材料被激发活性的比例和Eu3+离子被激发发光的概率并使材料有较高的载流子陷阱密度和较深的陷阱深度,从而有更高的荧光和余辉发光的强度。
Naturally occurring microstructure can effectively improve the performance of materials, especially graded nanoporous structure has been proven to effectively increase the light absorption efficiency of the material. In order to improve the luminescent properties of calcium silicate materials, Eu3 + doped calcium silicate luminescent materials were prepared by using leaves as the template, and the light absorption, luminescence and afterglow luminescence properties were tested. The results show that the Eu3 + -doped calcium silicate luminescent material prepared by using leaves as a template has biological grading pore structures with diameters of 2.5 nm, 3.0 nm and 10.0-20.0 nm, which can effectively increase the surface area and the pore volume of the luminescent material so that the material There is more light contact area to increase the absorption of photons so as to increase the ratio of the excitation activity of the luminescent material and the probability of the Eu3 + ions being excited to emit light and to make the material have a higher carrier trap density and a deeper trap depth, Have a higher fluorescence and afterglow luminous intensity.