Influence of non-uniform illumination on spectral response and efficiency measurements of large area solar cells

Author

Schönecker, Axel ; Bücher, Klaus

Author_Institution

Fraunhofer-Inst. fur Solare Energiesysteme, Freiburg, Germany

fYear

1991

fDate

7-11 Oct 1991

Firstpage

203

Abstract

An estimation of the uncertainty due to nonuniform or partial illumination for different types of solar cells is given, and the necessity to guarantee the uniformity of the irradiation for precision measurements and calibration is shown. In addition, the uncertainty in the mismatch factor is calculated as an example of the influence of spectral response uncertainty to integral values. The effects resulting from inhomogeneity of spectral response under nonuniform monochromatic irradiation are determined by measuring the spatial distribution of the irradiation and the spatially resolved spectral response. In addition, a model will be used to extract the influence of extreme cases of nonuniformity on different kinds of solar cells

Keywords

solar cells; calibration; efficiency measurements; large area solar cells; mismatch factor; nonuniform illumination; nonuniform monochromatic irradiation; partial illumination; spectral response measurements; Area measurement; Current measurement; Energy measurement; Equations; Light sources; Lighting; Measurement standards; Monitoring; Photoconductivity; Photovoltaic cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 1991., Conference Record of the Twenty Second IEEE

Conference_Location

Las Vegas, NV

Print_ISBN

0-87942-636-5

Type

conf

DOI

10.1109/PVSC.1991.169209

Filename

169209