EU PVSEC Programme Online
EU PVSEC 2020, 7 - 11 September 2020
Presentation: 4CO.1.4 Application of Suns-Photoluminescence to Extract Implied I-V Curves of Individual Cells in Modules Installed in the Field
Type: Oral
Date: Wednesday, 11th September 2019
08:30 - 10:00
Location / Room: Marseille Chanot Convention and Exhibition Centre, 1st Floor / Main Auditorium 1
Author(s): R. Bhoopathy, O. Kunz, R. Dumbrell, T. Trupke, Z. Hameiri
Presenter / Speaker: R. Bhoopathy, UNSW Australia, Sydney, Australia
Event: Conference Conference
Session: 4CO.1 Imaging Techniques and Characterisation
Type(s) of Access:  Conference Registration
Topic: 4. 1 PV Module Design, Manufacture, Performance and Reliability
Summary / Abstract: This work aims to obtain the current-voltage (I-V) parameters of individual solar cells in modules deployed in the field, without the need to contact the cells or the module. This is done by a novel method that is based on suns-photoluminescence (Suns-PL) measurements. From the obtained I-V curve, a large range of faults can be detected; furthermore, in many cases their cause can also be understood. A unique shading method is proposed that allows performing these measurements under normal daylight conditions. It is based on the principle that no significant external current can flow when a few cells in a series-connected sub-string of cells are fully shaded.