Acoustic and Electrical Diagnostics of Degradation in PV Cells and Mini-Modules

Author(s)
Viktor Schlosser, Manuel Serini, Michal Vary, Vladimir Saly, Juraj Packa, Marian Perny
Abstract

The aim of this work was to find the possibility to estimate the influence of forced ageing on the properties of photovoltaic modules. We have measured sound velocities in crystalline silicon PV modules before and after forced ageing. The commercially available mini-modules consisted of three high efficiency c-Si cells connected in series. Investigation of electrical properties was performed also before and after accelerated ageing under increased temperature and PID. It was found that forced ageing strongly affects the sound velocity of the complete modules. It was shown that impedance spectroscopy measurement and characterization is an important tool to reveal the degradation of the solar cells due to high voltage stress and increased temperature stress.

Organisation(s)
Electronic Properties of Materials
External organisation(s)
Slovak University of Technology in Bratislava, Slovak Academy of Sciences (SAS)
Pages
3200-3203
No. of pages
4
DOI
https://doi.org/10.4229/EUPVSEC20142014-5BV.4.38
Publication date
2014
Austrian Fields of Science 2012
Materials physics, Solid state physics, Surface physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/acoustic-and-electrical-diagnostics-of-degradation-in-pv-cells-and-minimodules(b59a6e17-7b23-4dac-b0be-c5934802be32).html