Current-voltage characteristics of high-efficiency silicon solar cells from photoluminescence

Ferraioli, L.; Maddalena, P.; Parretta, A.; Wang, A.; Zhao, J.
November 2004
Applied Physics Letters;11/1/2004, Vol. 85 Issue 18, p4222
Academic Journal
Series resistance is a fundamental power-limiting factor for a solar cell. It is known to depend on the ohmic losses due to the metal contact resistance, the metal–semiconductor contact resistance, the substrate resistance, and the emitter sheet resistance. A typical operating approach consists of indirect measurements of the total series resistance. Our method, based on photoluminescence, is capable of generating an illuminated current–voltage curve free from the effect of the contact series resistance, giving an immediate idea of true cell performance.


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