Chen C. Nanowelded carbon nanotubes: from field-effect transistors to solar microcells / C.Chen, Y.Zhang. - Heidelberg; New York: Springer, 2009. - xiii, 105 p.: ill. - (Nanoscience and technology). - Incl. bibl. ref. - Ind.: p.103-105. - ISBN 978-3-642-01498-7; ISSN 1434-4904  Место хранения:   047 | Институт проблем переработки углеводородов СО РАН | Омск | Библиотека

Оглавление / Contents

1 Carbon Nanotube Structure, Electronic, and Transport Properties ................................................... 1 1.1 Introduction ............................................ 1 1.2 Structure of Carbon Nanotubes ........................... 2 1.2.1 Vector Notation and Structure Type of Carbon Nanotubes ........................................ 2 1.2.2 Metallic and Semiconducting Carbon Nanotubes ..... 3 1.3 Electronic Properties of Carbon Nanotubes ............... 4 1.3.1 Dispersion Relation of SWCNTs .................... 4 1.3.2 Band Structure of SWCNTs ......................... 5 1.3.3 Density of State for SWCNTs ...................... 8 1.4 Transport in Single-Walled Carbon Nanotubes ............. 9 1.5 Conclusion ............................................. 11 References .................................................. 12 2 Synthesis and Purification of Carbon Nanotubes .............. 15 2.1 Introduction ........................................... 15 2.2 Synthesis Methods of Carbon Nanotubes .................. 16 2.2.1 Arc Discharge Method ............................ 16 2.2.2 Chemical Vapor Deposition (CVD) Method .......... 19 2.2.3 Laser Ablation Method ........................... 21 2.3 Growth Mechanism of Carbon Nanotubes ................... 22 2.4 Purification of Carbon Nanotubes ....................... 23 2.4.1 Purification Method ............................. 23 2.4.2 Purification Effect ............................. 24 2.5 Conclusion ............................................. 27 References .................................................. 28 3 Directed Alignment of Carbon Nanotubes ...................... 31 3.1 Introduction ........................................... 31 3.2 AC Electric Field-Assisted Alignment of Carbon Nanotubes .............................................. 32 3.2.1 AC Dielectrophoresis Method of SWCNTs ........... 32 3.2.2 Solubility and Dispersivity of Surface Modified SWCNTs ................................. 32 3.2.3 Directed Alignment Effect of SWCNTs ............. 34 3.2.4 Electrical Characteristics of Aligned SWCNTs .... 36 3.3 Langmuir-Blodgett Technique for the Alignment of Carbon Nanotubes ....................................... 37 3.3.1 Langmuir-Blodgett Method ........................ 38 3.3.2 Alignment Effect of Langmuir-Blodgett Method .... 39 3.3.3 Polarized Raman Spectroscopy of Aligned SWCNTs .......................................... 43 3.3.4 Alignment Mechanism of Langmuir-Blodgett Method .......................................... 44 3.4 Conclusion ............................................. 45 References .................................................. 45 4 Ultrasonic Nanowelding Technology Between Carbon Nanotubes and Metal Electrodes ........................................ 47 4.1 Introduction ........................................... 47 4.2 Conventional Fabrication Method of Carbon Nanotube/Metal Contacts ................................ 48 4.3 Ultrasonic Nanowelding Technology of Carbon Nanotubes to Metal Electrodes .......................... 50 4.3.1 Process of Ultrasonic Nanowelding ............... 50 4.3.2 Effect of Ultrasonic Nanowelding ................ 51 4.3.3 Nature of Nanowelded Carbon Nanotube/Metal Contacts ........................................ 53 4.4 Characteristics of Nanowelded Carbon Nanotube/Metal Contacts ............................................... 54 4.4.1 Electrical Characteristics of Nanowelded Metallic SWCNTs ................................. 54 4.4.2 Electrical Characteristics of Nanowelded Semiconducting SWCNTs ........................... 57 4.4.3 Barrier of Nanowelded Contacts .................. 58 4.4.4 Mechanical Strength of Nanowelded Contacts ...... 59 4.5 Conclusion ............................................. 61 References .................................................. 62 5 Nanowelded Multichannel Carbon-Nanotube Field-Effect Transistors (MC-CNTFETs) .................................... 63 5.1 Introduction ........................................... 63 5.2 Present Optimization Methods for CNTFETs ............... 64 5.2.1 Decrease the Contact Resistance Between SWCNTs and Metal Electrodes ............................ 65 5.2.2 Increase the Tuning Efficiency of Gate to SWCNT Channels .................................. 65 5.2.3 Shorten the SWCNT Channel Length ................ 69 5.2.4 Adopt the Optimized Device Structure ............ 69 5.3 NonNanowelded MC-CNTFETs ............................... 71 5.3.1 Device Fabrication .............................. 71 5.3.2 Device Characteristics .......................... 74 5.3.3 Device Reliability .............................. 77 5.4 Nanowelded MC-CNTFETs .................................. 77 5.4.1 Device Fabrication Processes ................... 77 5.4.2 Nanowelded p-type MC-CNTFETs .................... 79 5.4.3 Nanowelded n-Type MC-CNTFETs .................... 80 5.4.4 SWCNT Complementary Logic Inverters ............. 81 5.5 Conclusion ............................................. 82 References .................................................. 82 6 Carbon-Nanotube Solar Photovoltaic Microcells with Nanowelded Contacts ......................................... 85 6.1 Introduction ........................................... 85 6.2 Traditional Application of Carbon Nanotubes in Solar Photovoltaic Cells ..................................... 86 6.2.1 Using Carbon Nanotubes as Transport Path ........ 86 6.2.2 Using Carbon Nanotubes as Transparent Electrodes ...................................... 88 6.3 Fabrication of Nanowelded Carbon-Nanotube Solar Photovoltaic Microcells ................................ 90 6.4 Characteristics of Nanowelded Carbon-Nanotube Solar Photovoltaic Microcells ................................ 92 6.4.1 Photovoltaic Effect of the Device ............... 92 6.4.2 Physical Mechanism of the Device ................ 93 6.4.3 Power Conversion Efficiency of the Device ....... 94 6.5 Simulation of Carbon-Nanotube Solar Photovoltaic Microcells ............................................. 95 6.6 Conclusion ............................................. 99 References ............................................ 100 Index ......................................................... 103