Nanowelded Carbon Nanotubes: From Field-Effect Transistors to Solar Microcells

ISBN-13: 9783642260209 / Angielski / Miękka / 2012 / 105 str.

Changxin Chen; Yafei Zhang

Opis

The discovery of multiwalled carbon nanotubes(CNTs) in 1991 and the subsequent discovery of single-walled CNTs in 1993 have led to a worldwide excitement to explore their fundamental properties and potential device applications. A sing- walled CNT is structurally a sheet of graphene rolled into a seamless tube, which possesses a diameter of the order of a nanometer but a length thousands of times greater. The large aspect ratio and small cross section size make it nearly an ideal, quasi-one-dimensionalsystem, which has provided a concrete context for chemists, physicists, andengineersto collaborativelyworktogetherin the?eld ofnanoscience and nanotechnology. As a result of such efforts in the last two decades, superior electrical, optical, and mechanical properties of CNTs have been theoretically p- dicted and experimentally demonstrated. The unique material properties of CNTs have made it interesting for a variety of applications. For example, depending on the orientation of its graphene lattice relative to the nanotube axis, the CNT can be either metallic or semiconducting. This property makes the material interesting for developing not only nanoscale semiconductor devices but also a new interc- nect technologyto competewith the state-of-theart copperinterconnecttechnology. The property has also imposed yet-solved challenges in the ?eld. For example, one of the major challenges that holds CNTs back from electronic application is how to produce pure all-semiconducting CNTs, based on which a device that can be effectively turned off can be built.

The monograph places emphasis on introducing a novel ultrasonic nanowelding technology of carbon nanotubes (CNTs) to metal electrodes and its application for CNT devices. The structure and electronic property of CNTs, synthesis and purification of CNTs, and the fabrication processes of CNT-based devices etc. are covered in the book. Based on this, the carbon nanotube field-effect transistors (CNTFETs) and photovoltaic (PV) solar microcells fabricated with the ultrasonic nanowelding techniuqe are discussed. The book will be of interest to graduates, scientists and engineers working on CNTs and related topics from both academic and industrial backgrounds.

Spis treści

Carbon Nanotube Structure, Electronic, and Transport Properties.- Synthesis and Purification of Carbon Nanotubes.- Directed Alignment of Carbon Nanotubes.- Ultrasonic Nanowelding Technology Between Carbon Nanotubes and Metal Electrodes.- Nanowelded Multichannel Carbon-Nanotube Field-Effect Transistors (MC-CNTFETs).- Carbon-Nanotube Solar Photovoltaic Microcells with Nanowelded Contacts.

Blurb

The monograph places emphasis on introducing a novel ultrasonic nanowelding technology of carbon nanotubes (CNTs) to metal electrodes and its application for CNT devices. The structure and electronic property of CNTs, synthesis and purification of CNTs, and the fabrication processes of CNT-based devices etc. are covered in the book. Based on this, the carbon nanotube field-effect transistors (CNTFETs) and photovoltaic (PV) solar microcells fabricated with the ultrasonic nanowelding techniuqe are discussed. The book will be of interest to graduates, scientists and engineers working on CNTs and related topics from both academic and industrial backgrounds.