室温下Ⅱ-Ⅵ族纳米晶粒在Si衬底上的化学自组装  

SELF-ASSEMBLY OF Ⅱ-Ⅳ COMPOUND NANOCRYSTALS ON Si WAFER AT ROOM TEMPERATURE

作　　者：赵伟明[1] 甘新慧[1] 戴明[1] 徐岭[1] 孙萍[1] 李卫[1] 马懿[1] 马忠元[1] 吴良才[2] 徐骏[1] 陈坤基[1] 

机构地区：[1]南京大学固体微结构物理国家重点实验室南京大学物理系,江苏南京210093 [2]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《红外与毫米波学报》2008年第3期176-179,共4页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(10574069,90301009,60425414);国家(973)重点基础研究发展规划(2007CB935400)

摘　　要：应用胶体化学的方法,在溶液中合成了Ⅱ-Ⅵ族化合物—CdSe,CdTe纳米晶粒.紫外-可见光吸收谱(ABS)和光致荧光谱(PL)显示Ⅱ-Ⅵ族纳米晶粒具有良好的单分散性.在室温下利用双功能分子在S i衬底表面组装了Ⅱ-Ⅵ族纳米晶粒,原子力显微镜图像和接触角实验证实,Ⅱ-Ⅵ族纳米晶粒已经自组装到了S i衬底表面,并且表面比较平整,纳米晶粒分布均匀.The Ⅱ-Ⅳ compound nanocrystals CdSe and CdTe were synthesized in a solution by using a colloid chemistry method. The results of the ultraviolet-visible absorption and the photoluminescence spectra indicate that the nanocrystals have a good monodispersity. These nanocrystals were assembled on Si substrate by bifunctional linker molecule at room tem- perature. The results of atomic force microscopy analysis and contact-angle measurements confirm that the nanocrystals of uniform sizes are bound to Si substrate. The surface is smooth and the nanocrystals have uniform distributions.

关 键 词：半导体纳米晶体 自组装 双功能分子 刻蚀 

分 类 号：O471.4[理学—半导体物理]