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Spectral response measurements of multijunction solar cells with low shunt resistance and breakdown voltages.

Spectral response measurements of multijunction solar cells with low shunt resistance and breakdown voltages.
Babaro JP; Instituto Nacional de Tecnología Industrial- Física y Metrología, San Martín, Buenos Aires, Argentina.
West KG; SensorMetrix, San Diego, Ca, 92126.
Hamadani BH; National Institute of Standards and Technology, Engineering Laboratory, Gaithersburg, MD 20899 USA.
Energy science & engineering [Energy Sci Eng] 2016 Nov; Vol. 4 (6), pp. 372-382. Date of Electronic Publication: 2016 Oct 25.
Typ publikacji:
Journal Article
Imprint Name(s):
Original Publication: Oxford : John Wiley & Sons Ltd., 2013-
Opt Express. 2010 Apr 26;18(9):A73-8. (PMID: 20607888)
Appl Opt. 2013 Jul 20;52(21):5184-93. (PMID: 23872765)
Grant Information:
9999-NIST United States Intramural NIST DOC
Entry Date(s):
Date Created: 20170131 Latest Revision: 20201001
Update Code:
PubMed Central ID:
Czasopismo naukowe
Spectral response measurements of germanium-based triple-junction solar cells were performed under a variety of light and voltage bias conditions. Two of the three junctions exhibited voltage and light bias dependent artifacts in their measured responses, complicating the true spectral response of these junctions. To obtain more insight into the observed phenomena, a set of current-voltage measurement combinations were also performed on the solar cells under identical illumination conditions, and the data were used in the context of a diode-based analytical model to calculate and predict the spectral response behavior of each junction as a function of voltage. The analysis revealed that both low shunt resistance and low breakdown voltages in two of the three junctions influenced the measured quantum efficiency of all three junctions. The data and the modeling suggest that combination of current-voltage measurements under various light bias sources can reveal important information about the spectral response behavior in multijunction solar cells.