Detection of snail tracks on photovoltaic modules using a combination of Raman and fluorescence spectroscopy

Snail tracks are discolorations of the silver fingers on solar cells. We present a measurement system that can detect snail tracks. Their origin is unknown, but they are thought to be linked to micro cracks in the solar cell. Regions with micro cracks on a photovoltaic module were identified using e...

Full description

Saved in:
Bibliographic Details
Main Authors: de Biasio, M., Leitner, R., Hirschl, C.
Format: Conference Proceeding
Language:English
Subjects:
Degradation
Electroluminescence
Fluorescence
Insulation life
photovoltaic modules
Photovoltaic systems
Raman
Silicon
snail tracks
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Snail tracks are discolorations of the silver fingers on solar cells. We present a measurement system that can detect snail tracks. Their origin is unknown, but they are thought to be linked to micro cracks in the solar cell. Regions with micro cracks on a photovoltaic module were identified using electroluminescence measurements. Based on the electroluminescence data the faulty regions were mapped with a system that uses a combination of Raman and fluorescence spectroscopy. Our results show that our measurement system is a powerful tool for detecting snail tracks.
ISSN:2156-8065
2156-8073
DOI:10.1109/ICSensT.2013.6727670