ECN publication
Title:
Investigation of series resistance losses by illuminated lock-in thermography
 
Author(s):
 
Published by: Publication date:
ECN Solar Energy 1-10-2000
 
ECN report number: Document type:
ECN-RX--05-032 Article (scientific)
 
Number of pages:
7  

Published in: Progress in Photovoltaics: Research and Applications (John Wiley & Sons Ltd.), , 2005, Vol.13, p.697-703.

Abstract:

A measurement mode (JSC-ILIT) for the recently introduced Illuminated Lock-In Thermography (ILIT) method and a new interpretation of the images obtained is proposed. This mode is especially adapted for the investigation of series resistance, in particular contact resistance, in solar cells. Comparison of JSC-ILIT results to emitter potential maps obtained by Corescan demonstrate good agreement between the poorly contacted areas, proving the practical applicability of the technique. JSC-ILIT provides a quasi-contactless and fast measurement. Comparison is made with the recently introduced method of RS-ILIT. The capability of both methods to detect series resistance problems is demonstrated. Possible distortions due to inhomogeneities of bulk material quality are discussed.


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