CAJ | 학술논문

将商用CdS粉在真空炉中通过简单的热蒸发获得了大量高纯的CdS锥状纳米结构.扫描电子显微镜(SEM)、透射电子显微镜(TEM)观察和X射线衍射谱(XRD)的分析表明:CdS纳米锥状晶体为六角硫镉矿晶体结构,其形状为典型的纳米锥,晶格常数为a=0.413 nm,c=0.671 nm,沿着[0001]方向生长.CdS纳米锥的长度是20 μm到50 μm,直径从～100 nm减少到～20 nm.本文还详细研究了CdS纳米锥晶体的拉曼特性及其在激光辐射下的室温光致发光行为,探讨了绿光(波长为～512 nm)发射的机制.结果表明,这种CdS纳米锥可能用于新颖的光学器件.
장상용CdS분재진공로중통과간단적열증발획득료대량고순적CdS추상납미결구.소묘전자현미경(SEM)、투사전자현미경(TEM)관찰화X사선연사보(XRD)적분석표명:CdS납미추상정체위륙각류력광정체결구,기형상위전형적납미추,정격상수위a=0.413 nm,c=0.671 nm,연착[0001]방향생장.CdS납미추적장도시20 μm도50 μm,직경종～100 nm감소도～20 nm.본문환상세연구료CdS납미추정체적랍만특성급기재격광복사하적실온광치발광행위,탐토료록광(파장위～512 nm)발사적궤제.결과표명,저충CdS납미추가능용우신영적광학기건.
High purity CdS nanocones were obtained through a simple thermal evaporation process with highly active CdS nanoparticles as the evaporation source. It was found that these CdS nanocones had a single crystal hexagonal wurtzite structure growing along the [0001 ] direction. They had a cone-shaped morphology with typical length of 20 μm to 50 μm and their diameter decreases from ～ 100 nm to 20 nm with lattice constants of a = 0.413 nm and c = 0.671 nm. The photoluminescence (PL)characterization of the CdS nanocones shows strong near-band UV emission (about 512 nm), which indicates that the CdS nanocones have potential application in optoelectronic devices.