Dynamic disorder in molecular semiconductors: Charge transport in two dimensions

被引:83
作者
Troisi, Alessandro [1 ,2 ]
机构
[1] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England
[2] Univ Warwick, Ctr Comp Sci, Coventry CV4 7AL, W Midlands, England
关键词
THIN-FILM TRANSISTORS; ORGANIC SEMICONDUCTORS; ELECTRONIC TRANSPORT; CRYSTAL; PENTACENE; MOBILITY; RUBRENE; HOLE; IMPURITIES; ENERGY;
D O I
10.1063/1.3524314
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A semiclassical model to study charge transport in molecular semiconductors is extended from one to an arbitrary number of dimensions. The model is applied to the calculation of the charge mobility of the holes in the two dimensional plane of rubrene with the largest charge mobility. The absolute values of the computed mobility tensor, evaluated without adjustable parameters, are in excellent agreement with the experimental results of Podzorov et al. [Phys. Rev. Lett. 95, 226601 (2005)] and have the correct temperature dependence. The localization length and density of states determined by dynamic disorder are analyzed in detail and provide a global description of the charge transport process in agreement with the spectroscopic experiments. The effect of correlation in the modeling of dynamic disorder is also investigated. (C) 2011 American Institute of Physics. [doi:10.1063/1.3524314]
引用
收藏
页数:10
相关论文
共 52 条
[1]  
Alexandrov A. S., 1995, POLARONS BIPOLARONS
[2]   Organic semiconductors:: A theoretical characterization of the basic parameters governing charge transport [J].
Brédas, JL ;
Calbert, JP ;
da Silva, DA ;
Cornil, J .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (09) :5804-5809
[3]   A unified theory for charge-carrier transport in organic crystals [J].
Cheng, Yuan-Chung ;
Silbey, Robert J. .
JOURNAL OF CHEMICAL PHYSICS, 2008, 128 (11)
[4]   Charge transport in organic semiconductors [J].
Coropceanu, Veaceslav ;
Cornil, Jerome ;
da Silva Filho, Demetrio A. ;
Olivier, Yoann ;
Silbey, Robert ;
Bredas, Jean-Luc .
CHEMICAL REVIEWS, 2007, 107 (04) :926-952
[5]   Interaction of Charge Carriers with Lattice Vibrations in Organic Molecular Semiconductors: Naphthalene as a Case Study [J].
Coropceanu, Veaceslav ;
Sanchez-Carrera, Roel S. ;
Paramonov, Pavel ;
Day, Graeme M. ;
Bredas, Jean-Luc .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (11) :4679-4686
[6]   Transport properties in the rubrene crystal:: Electronic coupling and vibrational reorganization energy [J].
da Silva, DA ;
Kim, EG ;
Brédas, JL .
ADVANCED MATERIALS, 2005, 17 (08) :1072-+
[7]   Organic semiconductors: Polymorphism, phonon dynamics and carrier-phonon coupling in pentacene [J].
Della Valle, RG ;
Brillante, A ;
Farina, L ;
Venuti, E ;
Masino, M ;
Girlando, A .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2004, 416 :145-154
[8]  
Dimitrakopoulos CD, 2002, ADV MATER, V14, P99, DOI 10.1002/1521-4095(20020116)14:2<99::AID-ADMA99>3.0.CO
[9]  
2-9
[10]  
Ehrenfest P., 1927, Z. Physik., V45, P455, DOI [DOI 10.1007/BF01329203, 10.1007/BF01329203]