Investigation of optoelectronic properties in the Potassium intercalated carbon nanotube

Carbon nanotubes (CNTs) are attractive to both fundamental science and technology. The fascinating characteristics make carbon nanotubes the focus of current nanoscience and nanotechnology with many potential applications, including nano optoelectronic devices, photonic devices, field emitters, energy storage medium, chemical sensors and biosensors and optical communications [1].Designing nanotube-based nanoscale materials and devices requires the controllable modification of the physical and chemical properties of carbon nanotubes. In experiments, the chemical modification of carbon nanotubes can be realized by a variety of approaches [2], such as intercalation of electron donors likealkali metal or acceptors like halogen [3]. The deliberate introduction of impurities (dopants)into carbon nanotube could offer a possible route to change and tune its electronic properties. Alkali-metal such as potassium intercalated CNT are a compound system with a faceted variety of tunable vibronic and electronic properties [4].We present studies of the electronic structure and optoelectronic properties of potassium intercalated CNT.