【摘要】 利用水热技术制备了系列镍钝化多孔硅样品,并对其表面形貌和光致发光谱进行了研究。实验表明,样品的表面形貌与其光致发光特性之间存在强烈的关联:采用具有较低Ni²⁺浓度的腐蚀液所制备的样品表面形貌更为均匀,并具有相对较强的发光和较窄的发光峰。初步探索了通过对样品表面形貌的控制来改善样品发光性能的有效途径。更多还原

【Abstract】 Series of nickel-passivated porous silicon were fabricated by hydrothermally etching single crystal silicon wafers under different etching conditions. Morphology and photoluminescence （PL） investigation are disclosed that there exist strong correlation between the characteristics of the surface morphology and PL, i.e., the samples prepared with lower Ni²⁺ concentration are exhibited more regular surface morphology, stronger PL, as well as narrower PL band. The possibility of the realization of the PL improvement through controlling the surface morphology of porous silicon is also explored.更多还原