Enhanced photoluminescence in core-sheath CdS-PANI coaxial nanocables: A charge

2020-02-24 19:26:43

mechanism charge CdS PANI Nanocables

责任者: Yanyan Xi;Jianzhang Zhou;Honghui Guo;Chengdong Cai;Zhonghua Lin 单位: Dept. of Chem., Xiamen Univ., China 来源出处: Chemical Physics Letters(Chem. Phys. Lett. (Netherlands)),2005/08/25,412(1-3):60-4 摘要: Core-sheath CdS and Polyaniline (PANI) coaxial nanocables were fabricated by an electrochemical method, using an anodic aluminum oxide (AAO) membrane as the template. The morphology and optical properties of the obtained nanocables were investigated by several techniques. The photoluminescence (PL) of the CdS nanowire was observed to be significantly enhanced by the outer PANI nanotube. We propose a photo-generated charge transfer (PGCT) mechanism from outer PANI into the CdS core to explain this enhancement effect. The PGCT mechanism is different from those usually invoked for PL enhancement of nano-semiconductors. [All rights reserved Elsevier] 关键词: cadmium compounds;charge exchange;electrochemistry;nanotubes;nanowires;photoluminescence;polymers;core-sheath CdS-polyaniline coaxial nanocables;core-sheath CdS-PANI coaxial nanocables;enhanced photoluminescence;charge transfer mechanism;nanocables fabrication;electrochemical method;anodic aluminum oxide membrane;morphological properties;optical properties;CdS nanowire;PANI nanotube;photogenerated charge transfer mechanism;PGCT mechanism;nanosemiconductors