Sensors 2004, 4(5), 58-70; doi:10.3390/s40500058
Article

p-n Junction Photocurrent Modelling Evaluation under Optical and Electrical Excitation

1,* email, 1, 1 and 2
Received: 10 May 2004; Accepted: 14 June 2004 / Published: 20 July 2004
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Based upon the quasi-equilibrium approximation, the validity of p-n junction modelling, has been experimentally investigated under synchronous electrical and optical excitation of silicon photo-diodes. The devices had areas of 8.2 mm2 and reverse bias saturation currents of the order of 10-10 A. Their current-voltage (I-V) response was exploited experimentally both in the dark and under various illumination levels. The quoted values for the saturation current, the ideality factor, the series resistance and the reverse-bias photocurrent are investigated for the simulation of the I-V curves via the quasi-equilibrium model. In addition, the measured I-V data have been further analysed to estimate the produced photocurrent as a function of the applied bias (forward or reverse) under given illumination levels. Comparisons between the simulated curves and the experimental data allowed a detailed photocurrent modelling validation. The proposed approach could be useful towards studying other parameters of optically activated p-n junctions such as: the bias dependence of the minority carrier diffusion lengths and/or the generated rates of electron-hole pairs (EHP).
Keywords: Semiconductor applications; photovoltaics; p-n junction modelling; photocurrent
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MDPI and ACS Style

Dervos, C.T.; Skafidas, P.D.; Mergos, J.A.; Vassiliou, P. p-n Junction Photocurrent Modelling Evaluation under Optical and Electrical Excitation. Sensors 2004, 4, 58-70.

AMA Style

Dervos CT, Skafidas PD, Mergos JA, Vassiliou P. p-n Junction Photocurrent Modelling Evaluation under Optical and Electrical Excitation. Sensors. 2004; 4(5):58-70.

Chicago/Turabian Style

Dervos, Constantine T.; Skafidas, Panayotis D.; Mergos, John A.; Vassiliou, Panayota. 2004. "p-n Junction Photocurrent Modelling Evaluation under Optical and Electrical Excitation." Sensors 4, no. 5: 58-70.


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