Adhesional Shear Strength and Surface Analysis of a PV Module Deployed in Harsh Coastal Climate
Secondary Author(s)
Raravikar, Nachiket
Keywords
Adhesional shear strength; PV module; Coastal climate; Si/EVA interface; Corrosion; Sodium precipitation; Phosphorous effects; Tin presence
Abstract
Adhesional shear strength and chemical composition at the Si/EVA interface of samples extracted from a PV module manufactured by a major manufacturer using slow-cure EVA and deployed in the hot and humid climate at Cocoa, FL were studied. Precipitation of sodium from glass superstrate and ambient, and phosphorous from dopant glass reduced adhesional strength at Si/EVA interface to 35% of that in new modules. Presence of tin at this interface has also been attributed to solder-bond corrosion by moisture and impurities Na and P. It is interesting to point out that in this case, corrosion has occurred prior to delamination.
Date Published
1-1-2001
Identifiers
612
Subjects
Photovoltaic power systems; Shear strength of soils; Corrosion and anti-corrosives; Geochemistry; Surfaces (Technology)--Analysis
Local Subjects
PV Modules
Type
Text; Document
Collection
FSEC Energy Research Center® Collection
STARS Citation
Florida Solar Energy Center and Dhere, Neelkanth, "Adhesional Shear Strength and Surface Analysis of a PV Module Deployed in Harsh Coastal Climate" (2001). FSEC Energy Research Center®. 612.
https://stars.library.ucf.edu/fsec/612