A Model for the Current-Voltage Characteristics of ITO/PEDOT:PSS/MEH-PPV/Al Photodetectors

A Model for the Current-Voltage Characteristics of ITO/PEDOT:PSS/MEH-PPV/Al Photodetectors

We have developed a model of current-voltage ( I - V ) characteristic for an ITO/PEDOT:PSS/MEH-PPV/Al photodetector. The model is based on the solution of the continuity and drift-diffusion equation for hole polarons. Detailed analysis of the generation process is carried out through the investigati...

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Veröffentlicht in:IEEE photonics technology letters 2008-03, Vol.20 (5), p.348-350
Hauptverfasser: Petrovic, J., Matavulj, P., Difei Qi, Chambers, D.K., Selmic, S.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Charge carriers
Conjugated polymer
Electric fields
Electric potential
Equations
Excitons
Indium tin oxide
Mathematical models
modeling
photodetector
Photodetectors
Photovoltaic cells
Polymers
Radiative recombination
Volt-ampere characteristics
Voltage
Wavelength measurement
Wavelengths
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Zusammenfassung:We have developed a model of current-voltage ( I - V ) characteristic for an ITO/PEDOT:PSS/MEH-PPV/Al photodetector. The model is based on the solution of the continuity and drift-diffusion equation for hole polarons. Detailed analysis of the generation process is carried out through the investigation of the internal quantum efficiency (QE) dependence on incident photon flux density, incident light wavelength, and applied electric field. An excellent agreement between the simulated and measured I - V characteristics has been achieved in the maximum external QE wavelength range of the photodetector for a wide range of bias voltages from 0 to -8 V.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.915586