Acetic acid detection in photovoltaic modules during ultraviolet irradiation and damp-heat combined tests

In this study, we evaluated the acetic acid generation in photovoltaic (PV) modules during an accelerated reliability test that combines ultraviolet (UV) irradiation and damp-heat (DH) using tin film sensors. We employed a tin film to detect acetic acid through the change in optical reflectance due...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2022-06, Vol.61 (6), p.66501
Main Authors: Asano, Shota, Hamaoka, Ryo, Jonai, Sachiko, Hara, Yukiko, Masuda, Atsushi, Umeda, Norihiro, Iwami, Kentaro
Format: Article
Language:English
Subjects:
Accelerated tests
Acetic acid
Acids
Chemical reactions
damp heat
degradation
Irradiation
module
Nondestructive testing
photovoltaic
Photovoltaic cells
Reflectance
Reliability
Sensors
Temporal resolution
tin
Titanium nitride
ultraviolet
Ultraviolet radiation
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Summary:In this study, we evaluated the acetic acid generation in photovoltaic (PV) modules during an accelerated reliability test that combines ultraviolet (UV) irradiation and damp-heat (DH) using tin film sensors. We employed a tin film to detect acetic acid through the change in optical reflectance due to the chemical reaction from metallic tin to transparent tin tetraacetate. The relative reflectance of the tin film sensors laminated in a PV module was measured and used as an indicator of acetic acid generated during the reliability test. Consequently, we achieved non-destructive detection of a small amount of acetic acid generated during the UV irradiation stage of the UV+DH combined test with high spatial and temporal resolution using tin film sensors.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ac5734