Carrier doping to the organic Mott insulator by conjugating with tetrathiafulvalene

被引:4
作者
Takahashi, Y. [1 ,2 ]
Nakagawa, Y. [2 ]
Hayakawa, K. [2 ]
Inabe, T. [1 ,2 ]
Naito, T. [3 ]
机构
[1] Hokkaido Univ, Fac Sci, Dept Chem, Sapporo, Hokkaido 0600810, Japan
[2] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido 0600810, Japan
[3] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7290825, Japan
基金
日本科学技术振兴机构;
关键词
FIELD-EFFECT TRANSISTORS; CHARGE-TRANSFER; RAMAN-SPECTRA; BEDT-TTF; SALTS;
D O I
10.1063/1.4750066
中图分类号
O59 [应用物理学];
学科分类号
摘要
The electrical conductivity of the organic Mott insulator ET-F(2)TCNQ (ET = bis(ethylenedithio) tetrathiafulvalene, F(2)TCNQ = 2,5-difluoro-7,7,8,8-tetracyanoquinodimethane) crystal was found to be enhanced by conjugation with a tetrathiafulvalene (TTF) single crystal on its surface; surface sheet resistance decreased from 5 x 10(5) to 2 x 10(3) Omega/sq. The mechanism of this decrement was investigated through optical and atomic force microscopy measurements at the interface. When TTF was conjugated to the ET-F(2)TCNQ crystal, electron injection from TTF and complex formation between TTF and F(2)TCNQ occurred. Neutral ET molecules were consequently generated at the interface, and this charge doping broke the Mott insulating state. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4750066]
引用
收藏
页数:4
相关论文
共 26 条
[1]   Metallic conduction at organic charge-transfer interfaces [J].
Alves, Helena ;
Molinari, Anna S. ;
Xie, Hangxing ;
Morpurgo, Alberto F. .
NATURE MATERIALS, 2008, 7 (07) :574-580
[2]   Charge-transfer induced surface conductivity for a copper based inorganic-organic hybrid [J].
Arkenbout, Anne H. ;
Uemura, Takafumi ;
Takeya, Jun ;
Palstra, Thomas T. M. .
APPLIED PHYSICS LETTERS, 2009, 95 (17)
[3]  
CONWELL EM, 1988, SEMICONDUCTORS SEMIM, V27
[4]  
Dimitrakopoulos CD, 2002, ADV MATER, V14, P99, DOI 10.1002/1521-4095(20020116)14:2<99::AID-ADMA99>3.0.CO
[5]  
2-9
[6]   High performance organic semiconductors for field-effect transistors [J].
Dong, Huanli ;
Wang, Chengliang ;
Hu, Wenping .
CHEMICAL COMMUNICATIONS, 2010, 46 (29) :5211-5222
[7]   THE ASSIGNMENT OF THE NORMAL-MODES OF THE BEDT-TTF ELECTRON-DONOR MOLECULE USING THE INFRARED AND RAMAN-SPECTRA OF SEVERAL ISOTOPIC ANALOGS [J].
ELDRIDGE, JE ;
HOMES, CC ;
WILLIAMS, JM ;
KINI, AM ;
WANG, HH .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1995, 51 (06) :947-960
[8]   ORGANIC ALLOYS (TSEF)X(TTF)1-XTCNQ-STRUCTURE, CONDUCTIVITY, AND PHASE-TRANSITIONS [J].
ETEMAD, S ;
ENGLER, EM ;
SCHULTZ, TD ;
PENNEY, T ;
SCOTT, BA .
PHYSICAL REVIEW B, 1978, 17 (02) :513-528
[9]  
Farges J.-P., 1994, ORGANIC CONDUCTORS
[10]   Electronic states and anti-ferromagnetic order in mixed-stack charge-transfer compound (BEDT-TTF)(F(2)TCNQ) [J].
Hasegawa, T ;
Kagoshima, S ;
Mochida, T ;
Sugiura, S ;
Iwasa, Y .
SOLID STATE COMMUNICATIONS, 1997, 103 (08) :489-493