tailieunhanh - Báo cáo hóa học: " On the Morphology, Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: On the Morphology, Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures | Nanoscale Res Lett 2010 5 1307-1312 DOI s11671-010-9643-9 NANO EXPRESS On the Morphology Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures Chunnuan Ye Kaibo Zheng Wenlong You Guorong Chen Received 22 April 2010 Accepted 7 May 2010 Published online 22 June 2010 The Author s 2010. This article is published with open access at Abstract Silver-tetracyanoquinodimethane Ag-TCNQ nanostructured arrays with different morphologies were grown by an organic vapor-transport reaction under different conditions. The field emission properties of nanostructured arrays were studied systematically. Their morphology and crystal structure were characterized by SEM and XRD respectively. It was found that the field emission properties were strongly dependent on the reaction temperature and the initial Ag film thickness. The lowest turn-on field with 10-nm-thick silver film is about V m comparable to that of carbon nanotubes. The film crystal structure and the morphology are contributed to the final emission performance. Keywords Organic semiconductor Nanostructures Ag-TCNQ Field emission Introduction Field emission is of considerable interest over the past few years. Especially various kinds of conventional inorganic semiconductors have been considered as promising field C. Ye College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou People s Republic of China e-mail cnye@ K. Zheng G. Chen Department of Chemistry Fudan University 200433 Shanghai People s Republic of China e-mail grchen@ W. You School of Physical Science and Technology Soochow University 215006 Suzhou Jiangsu People s Republic of China emitters to fabricate field emission displays because of their high enhancement factor physical and chemical properties and wide range of possible applications 1 . However organic nanostructured materials are scarcely reported on the field emission properties. .

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