The role of space‐charge‐induced electric field on transient photocurrent response in organic semiconductors

The hopping model of charge‐carrier transport coupled to the Monte Carlo simulations was used to predict the time evolution of the photoinduced charge‐carrier current, I (t ), through a layer of an organic semiconductor. Two electric‐field configurations inside the layer were considered: a uniform e...

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Bibliographic Details
Published in:Physica Status Solidi (b) 2006-02, Vol.243 (2), p.473-482
Main Authors: Pavlica, E., Bratina, G.
Format: Article
Language:English
Subjects:
72.20.Ee
72.80.Le
73.61.Ph
Computer simulation
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity of specific materials
Electric fields
Electronic transport in condensed matter
Evolution
Exact sciences and technology
Mathematical models
Organic semiconductors
Photoconduction and photovoltaic effects
photodielectric effects
Photocurrent
Physics
Polymers
organic compounds (including organic semiconductors)
Reproduction
Solid state physics
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Summary:The hopping model of charge‐carrier transport coupled to the Monte Carlo simulations was used to predict the time evolution of the photoinduced charge‐carrier current, I (t ), through a layer of an organic semiconductor. Two electric‐field configurations inside the layer were considered: a uniform electric field and the electric field due to the injected space charge. A method to extract charge‐carrier mobility without a precise knowledge of the spatial dependence of the electric field is proposed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.200541111