DocumentCode :
683405
Title :
Discoloration of PV encapsulants
Author :
Wohlgemuth, J.H. ; Kempe, M.D. ; Miller, D.C.
Author_Institution :
Nat. Renewable Energy Lab., Golden, CO, USA
fYear :
2013
fDate :
16-21 June 2013
Firstpage :
3260
Lastpage :
3265
Abstract :
Discoloration of EVA encapsulants with accompanying module power loss was observed in the 1990s. Detailed analyses of the failure modes and recommendations on minimizing the effects have been published. Recent studies, however, indicate that the discoloration has not been eliminated in fielded photovoltaic (PV) modules and is still a major contributor to power degradation in crystalline silicon PV modules. Recent changes in the PV industry and its supply chain make it likely that this phenomenon could be a more significant problem (with significant relearning) in the future. This paper will review the past work on EVA discoloration, present and explain the new results on long-term degradation, and make recommendations on how to limit encapsulation discoloration going forward.
Keywords :
encapsulation; solar cells; EVA encapsulants; PV encapsulants discoloration; crystalline silicon PV modules; ethylene vinyl acetate encapsulant; fielded PV modules; fielded photovoltaic modules; power degradation; Aging; Cerium; Degradation; Encapsulation; Glass; Industries; Temperature; Photovoltaic encapsulants; degradation of photovoltaic modules;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th
Conference_Location :
Tampa, FL
Type :
conf
DOI :
10.1109/PVSC.2013.6745147
Filename :
6745147
Link To Document :
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