ICCAS OpenIR
Photoresponsive nanoscale columnar transistors
Guo, Xuefeng1; Xiao, Shengxiong2,3; Myers, Matthew2,3; Miao, Qian4; Steigerwald, Michael L.2,3; Nuckolls, Colin2,3
2009-01-20
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume106Issue:3Pages:691-696
AbstractThis study reports a general methodology for making stable high-performance photosensitive field effect transistors (FET) from self-assembled columns of polycyclic aromatic hydrocarbons by using single-walled carbon nanotubes (SWNTs) as point contacts. In particular, the molecules used in this work are liquid crystalline materials of tetra(dodecyloxy) hexabenzocoronenes (HBCs) that are able to self-organize into columnar nanostructures with a diameter similar to that of SWNTs and then form nanoscale columnar transistors. To rule out potential artifacts, 2 different structural approaches were used to construct devices. One approach is to coat thin films of HBCs onto the devices with the SWNT-metal junctions protected by hydrogensilsesquioxane resin (HSQ), and the other is to place a droplet of HBC exactly on the nanogaps of SWNT electrodes. Both types of devices showed typical FET behaviors, indicating that SWNT-molecule-SWNT nano-junctions are responsible for the electrical characteristics of the devices. After thermally annealing the devices, HBC molecules assembled into columnar structures and formed more efficacious transistors with increased current modulation and higher gate efficiency. More interestingly, when the devices were exposed to visible light, photocurrents with an on/off ratio of >3 orders of magnitude were observed. This study demonstrates that stimuli-responsive nanoscale transistors have the potential applications in ultrasensitive devices for environmental sensing and solar energy harvesting.
KeywordChemistry Field Effect Transistor Nanofabrication Nanoscience Self-assembly
DOI10.1073/pnas.0807596106
Indexed BySCI
Language英语
WOS IDWOS:000262809700006
PublisherNATL ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68028
Collection中国科学院化学研究所
Corresponding AuthorGuo, Xuefeng
Affiliation1.Peking Univ, Coll Chem & Mol Engn, Ctr Nanochem, Beijing Natl Lab Mol Sci,State Key Lab Struct Che, Beijing 100871, Peoples R China
2.Columbia Univ, Ctr Elect Mol Nanostruct, New York, NY 10027 USA
3.Columbia Univ, Dept Chem, New York, NY 10027 USA
4.Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Guo, Xuefeng,Xiao, Shengxiong,Myers, Matthew,et al. Photoresponsive nanoscale columnar transistors[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2009,106(3):691-696.
APA Guo, Xuefeng,Xiao, Shengxiong,Myers, Matthew,Miao, Qian,Steigerwald, Michael L.,&Nuckolls, Colin.(2009).Photoresponsive nanoscale columnar transistors.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,106(3),691-696.
MLA Guo, Xuefeng,et al."Photoresponsive nanoscale columnar transistors".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 106.3(2009):691-696.
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