Quantum Dot Modified One-Dimensional C-60 Nanorod in Situ Preparation and Photoinduced Charge Transfer
Quantum Dot Modified One-Dimensional C-60 Nanorod in Situ Preparation and Photoinduced Charge Transfer
复制标题
量子点修饰一维C-60纳米棒原位制备及光致电荷转移
DOI：
10.1021/acs.jpcc.7b06120
复制
发表时间：
2017
影响因子：
3.7
通讯作者：
Du Zuliang
中科院分区：
文献类型：
--
作者：
Jiang Xiaohong;Yuan Meng;Liu He;Song Zhiyao;Li Huimin;Du Zuliang
采用液-液界面沉淀法制备了CdSe/CdS/ZnS量子点（QD）修饰的C60纳米棒。利用透射电子显微镜和扫描电子显微镜对C60纳米棒的结构进行了表征，发现C60纳米棒表面附着了CdSe/CdS/ZnS量子点。利用紫外-可见吸收光谱、表面光电压谱（SPS）、稳态和瞬态光致发光光谱（PL）研究了纳米棒的光电性能。结果表明，CdS/CdS/ZnS复合量子点/C60纳米棒薄膜的荧光猝灭、寿命降低、SPS响应增强。研究了单根C60纳米棒经CdSe/CdS/ZnS量子点修饰后的电荷输运性质对光电流产生的影响。研究认为，光生电荷通过油胺配体隧穿从CdSe/CdS/ZnS量子点转移到C60纳米棒上.量子点/C60纳米棒杂化体系通过配体交换调节量子点与C60之间的相互作用和电荷输运能力。该方法在室温下原位制备的量子点/碳60纳米棒杂化薄膜产率高。
CdSe/CdS/ZnS quantum dot (QD) modified C60nanorods were performed by the liquid–liquid interfacial precipitation method. Transmission electron microscopy and scanning electron microscopy were used to characterize the hybrid C60structure and found that the CdSe/CdS/ZnS QDs were attached on the surface of C60nanorods. UV–vis absorption spectroscopy, surface photovoltage spectroscopy (SPS), and steady-state and transient spectra photoluminescence (PL) were used to investigate the nanorods’ optoelectronic properties. The CdSe/CdS/ZnS QD PL quench, decreasing lifetime, and enhanced SPS response were observed for the hybrid QDs/C60nanorod films. The charge transport property of a single C60nanorod modified by CdSe/CdS/ZnS QDs was also investigated for photocurrent occurrence. It is considered that the photoinduced charge transfers from CdSe/CdS/ZnS QDs to C60nanorods by tunneling through the oleylamine ligand. The hybrid QDs/C60nanorod will be a good system for adjusting the interaction and the ability of charge transportation between the QDs and C60by ligand exchange. Thein situpreparation method for the hybrid QD/C60nanorod films has high yield at room temperature.