中文摘要：

通过热蒸发方法成功制备出SdS0.65Se0.35纳米带,得到的纳米带表面光滑,宽度厚度均一,表现出很高的结晶质量.使用近场光学显微镜对纳米带室温下的带边荧光波导和光致荧光近场光谱进行研究.发现SdS0.65Se0.35纳米带呈现良好的光波导的特性;同时通过近场光学显微镜得到的空间分辨光谱,发现随着传播距离的增大,纳米带的光致荧光光谱有持续的红移现象.这种光谱红移现象是带间跃迁过程中带尾态的吸收效应引起的,并作了光谱带尾态吸收的理论模拟与实验结果进行比较.光波导传输过程中光谱的变化反映了信息在整个传导过程中的情况,体现了信息传递过程中的稳定性和有效性.三元合金材料SdS0.65Se0.35纳米带的波导和光谱性质研究,对于其他组分可调的三元合金纳米结构的制备和研究,及发展新型的纳米功能器件有重要意义.

英文摘要：

　Ternary alloy SdS 0.65Se 0.35 nanoribbons were successfully grown by a one-step thermal evaporation.The nanoribbons obtained have high-quality single-crystalline nature.To understand the whole picture of waveguide behavior in SdS 0.65Se 0.35 nanoribbons,we quantitatively studied the guided photoluminescence（PL）through individual SdS 0.65Se 0.35 nanoribbon by using scanning near-field optical microscopy（SNOM）at room temperature.The results show significant sustained red shift of PL spectra of the SdS 0.65Se 0.35 nanoribbons optical waveguide with the increase of the light propagation distance.According to our analysis,the red shift is attributed to the absorption of band-tail of states in nanoribbons.This finding may be extended to other ternary nanosyotems and be useful for fabricating new subwavelength photonic components.