This study investigates how blue (approx 460 nm) photoluminescence (PL) from mesoporous silica (MS) films depends on the nano-structure and chemistry of the pores. Reducing pore-size and pore-wall can increase the total area of the pore-surfaces, and therefore the number of radiative recombination centers, within the MS matrix, enhancing PL efficiency. Moreover, the number of silianol groups on pore-surfaces, which absorb moisture and degrade the PL of the MS films, is greatly reduced by silylating MS with hydrophobicity, yielding long-term stable luminescence. The quantum-efficiency of PL and the electroluminescence of the MS films are measured about 5.0 X 10~(-4) and 1.0 X 10~(-6), respectively.
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机译：这项研究调查了中孔二氧化硅（MS）膜的蓝色（约460 nm）光致发光（PL）如何取决于纳米结构和孔的化学性质。减小孔径和孔壁可以增加孔表面的总面积，从而增加MS基质内辐射复合中心的数量，从而提高PL效率。而且，通过使具有疏水性的MS甲硅烷基化而大大减少了吸收水分并降解MS膜的PL的孔表面上的甲硅烷基基团的数目，从而产生了长期稳定的发光。 PL的量子效率和MS薄膜的电致发光分别约为5.0 X 10〜（-4）和1.0 X 10〜（-6）。
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