Performance Stabilization of CdTe PV Modules using Bias and Light.
Author: Silverman, T. J.; Deceglie, M. G.; Marion, B.; Kurtz, S. R.
Pages/Volumes: 6 pp.
Publication Year: 2014
Notes: Presented at the 40th IEEE Photovoltaic Specialists Conference, 8-13 June 2014, Denver, Colorado
Document Type: Conference Paper
NTIS/GPO Number: 1136577
Subject Code Description: Solar Energy - Photovoltaics
Abstract: Reversible performance changes due to light exposure frustrate repeatable performance measurements on CdTe PV modules. It is common to use extended light-exposure to ensure that measurements are representative of outdoor performance. We quantify the extent to which such a light-exposed state depends on module temperature and consider bias in the dark to aid in stabilization. We evaluate the use of dark forward bias to bring about a performance state equivalent to that obtained with light exposure, and to maintain a light-exposed state prior to STC performance measurement. Our results indicate that the most promising method for measuring a light-exposed state is to use light exposure at controlled temperature followed by prompt STC measurement with a repeatable time interval between exposure and the STC measurement.
Accession Number: 60444
Library Notes: NPL-1407 REV
Report Numbers: CP-5J00-61240
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