Title: Spectral Response Measurements of Thin-film Multi-junction PV Modules at the European Solar Test Installation and Spectral Mismatch Calculation
Authors: PRAVETTONI MauroVIRTUANI AlessandroMUELLEJANS HaraldKENNY RobertDUNLOP EwanBARNHAM Keith W. J.
Citation: Proceedings of the 24th European Photovoltaic Solar Energy Conference and Exhibition p. 3338-3342
Publisher: WIP Renewable Energies
Publication Year: 2009
JRC Publication N°: JRC50096
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC50096
Type: Contributions to Conferences
Abstract: Multijunction thin film modules are of ever greater interest, due to their high efficiency values recorded in the literature. Spectral response measurements on such devices require a careful usage of coloured bias light and also present additional difficulties when applied to large area modules: the method should avoid current limitation by the junction producing less current at a given wavelength, due to series connection of junctions in the device. In this work we present details of the method recently developed at ESTI for spectral response measurements of large area thin film multijunction modules. The mismatch factor calculation for the same devices is also shown: this is done by the convolution of the measured spectral response of each junction and of the reference cell with the spectrum of our Large Area Pulsed Solar Simulator and with the standard AM1.5 spectrum.
JRC Institute:Institute for Energy and Transport

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