Quantum Dot Modified One-Dimensional C60 Nanorod in Situ Preparation and Photoinduced Charge Transfer

Abstract

CdSe/CdS/ZnS quantum dot (QD) modified C60 nanorods were performed by the liquid–liquid interfacial precipitation method. Transmission electron microscopy and scanning electron microscopy were used to characterize the hybrid C60 structure and found that the CdSe/CdS/ZnS QDs were attached on the surface of C60 nanorods. 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/C60 nanorod films. The charge transport property of a single C60 nanorod 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 C60 nanorods by tunneling through the oleylamine ligand. The hybrid QDs/C60 nanorod will be a good system for adjusting the interaction and the ability of charge transportation between the QDs and C60 by ligand exchange. The in situ preparation method for the hybrid QD/C60 nanorod films has high yield at room temperature.