Journal
JOURNAL OF APPLIED PHYSICS
Volume 115, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4871017
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Funding
- Ministerium fur Wirtschaft und Arbeit des Landes Sachsen-Anhalt
- European Union [FuE 56/10]
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Precise knowledge of the series resistance is essential for failure and loss analysis as well as yield prediction of solar cell devices. In this work, a method which determines the current and photogeneration dependence of the series resistance without assuming any specific current-voltage characteristic for the internal diodes is presented. This approach is of particular interest for solar cells which cannot be described by the one-or two-diode model such as organic solar cells. Furthermore, it clarifies the difference in the series resistance values that are obtained from current-voltage curves in the dark and under illumination as well as short-circuit-current and open-circuit-voltage characteristics. Additionally, it is shown how other cell parameters, such as the shunt resistance or the current-voltage characteristic of the internal diode are determined in a consistent way. Finally, it is demonstrated that our approach can be easily implemented in a new generation of solar simulators that are based on light-emitting diodes instead of conventional light sources. (C) 2014 AIP Publishing LLC.
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