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Effects of hydrogenation and aging on the optical properties in porous Si layers

机译:氢化和时效对多孔硅层光学性能的影响

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摘要

The effects of hydrogenation and aging on the optical properties in porous Si (PS) layers were investigated by using photoluminescence (PL) measurements. When the hydrogenated PS layers were aged in air, the intensity of the PL spectrum increased. The emission peak for the hydrogenated PS layers shifted to higher energy with decreasing H2/N2 ratio. The relation of the dehydrogenized states in the as-formed PS surface to the quantum states of Si nanoparticles with relatively small sizes is discussed. These results indicate that the optical properties of PS layers are significantly affected by hydrogenation and aging.
机译:通过使用光致发光(PL)测量研究了氢化和老化对多孔Si(PS)层中光学性能的影响。当氢化的PS层在空气中老化时,PL光谱的强度增加。随着H2 / N2 比的降低,氢化后的PS层的发射峰转移到更高的能量。讨论了形成的PS表面的脱氢态与尺寸相对较小的Si纳米粒子的量子态的关系。这些结果表明,PS层的光学性质受到氢化和老化的显着影响。

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  • 来源
    《Journal of Materials Science》 |2007年第16期|6862-6865|共4页
  • 作者单位

    Nano Device Research Center Korea Institute of Science ampamp Technology Seoul 136-791 Korea;

    Nano Device Research Center Korea Institute of Science ampamp Technology Seoul 136-791 Korea;

    Nano Device Research Center Korea Institute of Science ampamp Technology Seoul 136-791 Korea;

    Advanced Semiconductor Research Center Division of Electronics and Computer Engineering Hanyang University 17 Haengdang-dong Seongdong-gu Seoul 133-791 Korea;

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