DocumentCode :
1943797
Title :
Unified Mobility Model for Amorphous Organic Materials
Author :
Torricelli, Fabrizio ; Kovács-Vajna, Zsolt Miklós ; Colalongo, Luigi
Author_Institution :
Dept. of Electron. for Autom., Univ. of Brescia, Brescia, Italy
fYear :
2009
fDate :
9-11 Sept. 2009
Firstpage :
1
Lastpage :
4
Abstract :
The influence of temperature, carrier concentration and electric field on the hopping transport in disordered organic semiconductors is studied theoretically, and a simple and accurate analytical model is worked out. The model is based on the concept of percolation in a variable range hopping system and the calculations are worked out exploiting the effective temperature approach. At room temperature the dependence on carrier density plays a major role, whereas at low temperatures or high fields the electric field dependence becomes relevant. Neglecting only one of those effects, depending on the operating conditions, leads to an evident underestimation of the hopping mobility.
Keywords :
amorphous semiconductors; carrier density; carrier mobility; hopping conduction; organic semiconductors; percolation; amorphous organic materials; carrier concentration; carrier density; disordered organic semiconductors; effective temperature approach; electric field; hopping mobility; hopping transport; percolation; unified mobility model; variable range hopping system; Amorphous materials; Analytical models; Automation; Charge carrier density; Current-voltage characteristics; Organic light emitting diodes; Organic materials; Organic semiconductors; Temperature dependence; Temperature distribution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Simulation of Semiconductor Processes and Devices, 2009. SISPAD '09. International Conference on
Conference_Location :
San Diego, CA
ISSN :
1946-1569
Print_ISBN :
978-1-4244-3974-8
Electronic_ISBN :
1946-1569
Type :
conf
DOI :
10.1109/SISPAD.2009.5290212
Filename :
5290212
Link To Document :
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