THz time domain spectroscopy of doped poly p-phenylene vinylene (MEH-PPV)

被引：6

作者：

Jeon, TI ^{[1
]}

Kim, KJ

Mukherjee, AK

Menon, R

机构：

[1] Korea Maritime Univ, Div Elect & Elect Engn, Pusan 606791, South Korea

[2] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

来源：

SYNTHETIC METALS | 2005年 / 150卷 / 01期

关键词：

time-resolved fast spectroscopy; conductivity; terahertz;

D O I：

10.1016/j.synthmet.2005.01.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An optoelectronic contactless method by THz time domain spectroscopy (THz-TDS, in the frequency range 0.5-3.0 THz) has been used to measure the absorption, dispersion, and reflectance of FeCl3-doped poly(2-methoxy-5-(2'-ethyl)hexyloxy-p-phenylene vinylene) [MEHPPV] film. The measured data fit well to Lorentz oscillator (LO) model indicating that free carriers are negligible though the system is fairly conducting (similar to 0.1 S/cm) at room temperature. The large value of the coupling constant (Omega(p1)/2 pi = 14.7 THz) in LO model indicates that intra-chain localization of carriers is rather strong and the inter-chain transport is quite weak. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：53 / 56

页数：4

共 19 条

[1]

[Anonymous], 1997, Handbook of Organic Conductive Molecules and Polymers

[2]

[Anonymous], HDB CONDUCTING POLYM

[3]

Ashcroft N.W., 1976, Solid State Physics

[4]

Born M., 1987, Principles of Optics

[5] Electroluminescence in conjugated polymers [J].

Friend, RH ;

Gymer, RW ;

Holmes, AB ;

Burroughes, JH ;

Marks, RN ;

Taliani, C ;

Bradley, DDC ;

Dos Santos, DA ;

Brédas, JL ;

Lögdlund, M ;

Salaneck, WR .

NATURE, 1999, 397 (6715) :121-128

[6] FAR-INFRARED TIME-DOMAIN SPECTROSCOPY WITH TERAHERTZ BEAMS OF DIELECTRICS AND SEMICONDUCTORS [J].

GRISCHKOWSKY, D ;

KEIDING, S ;

VANEXTER, M ;

FATTINGER, C .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (10) :2006-2015

[7] Electrical characterization of conducting polypyrrole by THz time-domain spectroscopy [J].

Jeon, TI ;

Grischkowsky, D ;

Mukherjee, AK ;

Menon, R .

APPLIED PHYSICS LETTERS, 2000, 77 (16) :2452-2454

[8] Electrical and optical characterization of conducting poly-3-methylthiophene film by THz time-domain spectroscopy [J].

Jeon, TI ;

Grischkowsky, D ;

Mukherjee, AK ;

Menon, R .

APPLIED PHYSICS LETTERS, 2001, 79 (25) :4142-4144

[9] TRANSIENT ELECTROLUMINESCENCE IN POLY(P-PHENYLENEVINYLENE) LIGHT-EMITTING-DIODES [J].

KARG, S ;

DYAKONOV, V ;

MEIER, M ;

RIESS, W ;

PAASCH, G .

SYNTHETIC METALS, 1994, 67 (1-3) :165-168

[10] ELECTRICAL CHARACTERIZATION TO 4 THZ OF N-TYPE AND P-TYPE GAAS USING THZ TIME-DOMAIN SPECTROSCOPY [J].

KATZENELLENBOGEN, N ;

GRISCHKOWSKY, D .

APPLIED PHYSICS LETTERS, 1992, 61 (07) :840-842

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