纳米CdS/碳纳米管复合材料的光电特性  

Opto-electronic properties of CdS nano particle/carbon nanotube composites

作　　者：李振武[1] 

机构地区：[1]菏泽学院蒋震机电工程系,菏泽274015

出　　处：《物理学报》2012年第1期296-301,共6页Acta Physica Sinica

基　　金：山东省自然科学基金项目(批准号:Y2008A16)资助的课题~~

摘　　要：基于CdS良好的光学性质和单壁碳纳米管(SWCNT)优异的电子学性质,制备了纳米CdS/SWCNT复合材料和纳米CdS/聚乙烯亚胺(PEI)功能化SWCNT复合材料,并利用日光灯光源模拟太阳光研究了它们的光电性质.结果表明,纳米CdS/SWCNT复合材料呈现显著的负光电导现象,而纳米CdS/PEI-SWCNT复合材料呈现强烈的正光电导现象.用电子转移理论对这一结果进行了解释.两样品在大角度弯折的情况下,光电性质均基本没有变化.因此,纳米CdS/碳纳米管复合材料在光电领域,尤其是新兴的柔性光电子学领域有着良好的应用前景.Based on the outstanding optical properties of CdS and excellent electronic properties of single walled carbon nanotube（SWCNT）, nano-CdS particle/SWCNT composite materials and nano-CdS/polyethyleneimine（PEI） functionalized SWCNT composite materials are prepared.Their optical and the electrical properties are investigated by using fluorescent light simulated sunlight.The results show that nano-CdS/SWCNT composite material displays a significant negative photo-conductivity phenomenon,while nano-CdS/PEISWCNT composite material displays a positive photo-conductivity phenomenon,which can be were explained by using electrontransfer theory.The optical and the electrical properties of two samples are unchanged in the case of large angle bending.Therefore, the nano-CdS/SWCNT composite materials in optical and electrical areas,especially in the emerging field of flexible opto-electronics have a good prospect.

关 键 词：碳纳米管 CDS 光电材料 复合材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程]