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Extraction of the built-in potential for organic solar cells from current-voltage characteristics
Prashanth Kumar Manda, Saranya Ramaswamy,
Published in Institute of Electrical and Electronics Engineers Inc.
2018
Volume: 65
   
Issue: 1
Pages: 184 - 190
Abstract
The built-in potential (Vbi) of an organic diode and solar cell is an important parameter that decides the rectification behavior of organic diodes and affects the open circuit voltage and thereby the efficiency of organic solar cells. In this paper, we propose a physics-based model and an experimental method to extract Vbi from current density-voltage(J-V) characteristics.The proposed model is developed by solving the carrier transport and the continuity equations to obtain the analytic equations for charge carrier profile and current density. The proposed method is thoroughly verified using numerical simulation results. Applicability of thismethod on experimental results is further validated for poly(3-hexylthiophene):phenyl-C61- butyric acid methyl ester solar cells. Finally,Vbi is extracted from dark J-V characteristics of fabricated devices. © 2017 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Electron Devices
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN00189383
Open AccessYes
Concepts (23)
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    Analytical models
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    Butyric acid
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    Carrier transport
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    Current voltage characteristics
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    Diodes
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    Electric rectifiers
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    ELECTRIC SPACE CHARGE
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    Mathematical models
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    Numerical methods
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    Numerical models
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    Open circuit voltage
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    Photoelectrochemical cells
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    Photovoltaic cells
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    Schottky barrier diodes
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    Solar cells
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    Solar power generation
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    BUILT-IN POTENTIAL
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    INJECTION LIMITED CURRENTS
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    ORGANIC DIODES
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    SCHOTTKY BARRIERS
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    Schottky diodes
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    SPACE-CHARGE-LIMITED CURRENT
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    Organic solar cells