超声对单层C_(60)LB膜表面形貌的影响及其变温荧光的研究  

The Effect of Ultrasonic to the Surface Topography of Monolayer C_(60)LB Film and PL Spectra of the Film at Different Temperature

作　　者：王颖[1] 方炎[1] 

机构地区：[1]北京市纳米光电子学重点实验室首都师范大学,北京100048

出　　处：《光散射学报》2009年第2期148-151,共4页The Journal of Light Scattering

摘　　要：本文通过控制制备过程中成膜液的超声时间,利用LB技术制备出了不同形貌和结构的单层C60LB膜,利用扫描电子显微镜(SEM)观察到超声30分钟制备的薄膜中C60以尺寸较小的球状团簇存在,超声90分钟制备的薄膜中C60团簇尺寸变大且出现了少量棒状结构,超声150分钟制备的薄膜中存在一些中空的管状C60结构。利用激光荧光对所制备的单层C60LB膜进行了变温荧光光谱的研究,室温下的荧光光谱包括两个荧光峰,当温度降低到120 K时在768 nm处出现了一个新的荧光峰,原来的两个荧光峰随温度的变化则不是很明显。Different surface topography and structure C60 LB films were obtained by changing the ultrasonic time of the C60/SA/toluene mixed solutions. SEM images display that when the ultrasonic time is 30 min, the film contain some little cluster, increasing the time to 90min, there are some bigger cluster and little rodlike structure. Along with the increasing of the ultrasonic time, some regular hollow prismatic structure appeared. The PL spectra of the film show that there are two PL spectral peaks at room temperature, as the changing of the temperature, a new peak appeared at about 768nm when decreasing the temperature to 120 K.

关 键 词：C60 LB膜 超声 形貌 变温荧光 

分 类 号：O433[机械工程—光学工程]