Localization and Characterization of a Degraded Site in Crystalline Silicon Photovoltaic Cells Exposed to Acetic Acid Vapor

Tanahashi, Takahiko; Sakamoto, Norihiko; Shibata, Hajime; Masuda, Atsushi

doi:10.1109/jphotov.2018.2839259

Cited by 21 publications

(15 citation statements)

References 27 publications

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“…From previous studies of extended‐duration DH on modules with Ag‐screenprinted contacts and EVA, the mode of degradation is attributed to increased contact resistance between the emitter and front Ag metallization 11 . This has been the subject of in‐depth study in a number of ways, with evidence of the direct mechanism being the dissolution by acetic acid of lead oxide in the leaded glass frit additive, which creates physical voids between the metallization and underlying silicon 35‐37 …”

Section: Resultsmentioning

confidence: 99%

Degradation of copper‐plated silicon solar cells with damp heat stress

Karas

Michaelson²,

Munoz³

et al. 2020

Progress in Photovoltaics

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Crystalline silicon solar cells with copper-plated contacts are fabricated, encapsulated in ethylene-vinyl acetate (EVA), and subject to extended damp heat stress (85 C and 85% relative humidity). We source cell precursors from several different cell manufacturers and employ several different patterning methods of the silicon nitride layer and deposit a plated front contact stack of nickel, copper, and tin using light-induced plating. Across different Cu-plated samples, we find similar degradation that impacts

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Section: Resultsmentioning

confidence: 99%

Degradation of copper‐plated silicon solar cells with damp heat stress

Karas

Michaelson²,

Munoz³

et al. 2020

Progress in Photovoltaics

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“…20) Corrosion of glass layer in Ag metallization on a PV cell by acetic acid increases the series resistance and decreases the output performance. 22,[36][37][38][39][40][41][42][43][44] In particular, acceleration of acetic acid generation has been reported at the DH stage in the UV+DH combined tests, suggesting the formation of a promoter of hydrolysis in the UV stage. 45) In these studies, the effects of degradation by acetic acid were analyzed using destructive measurement methods.…”

Section: Introductionmentioning

confidence: 99%

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

Asano¹,

Hamaoka²,

Jonai³

et al. 2022

Jpn. J. Appl. Phys.

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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.

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“…A study conducted by [21] found that the PV degradation rate based on the long term of outdoor exposure in northern Thailand was equal to -1.5%/year. The degradation rates of PV modules in Japan, Singapore, and the Republic of Korea were reported equal to -1.15%/year [22], -2.0%/year [23], and -1.3%/year [24], respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Although there are various research efforts that focus on the degradation rate of PV systems worldwide [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], there is lack of references describing the behaviour and degradation analysis of existing PV systems in the United Kingdom (temperate maritime climate). Therefore, in this paper, the data of 3000 PV installations across the UK are refined, and the extracted degradation rates are analyzed over a period of ten years (2008 to 2017).…”

Section: Introductionmentioning

confidence: 99%

Insights on the Degradation and Performance of 3000 Photovoltaic Installations of Various Technologies Across the United Kingdom

Dhimish

Schofield

Attya

2021

IEEE Trans. Ind. Inf.

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This article presents the degradation rates over eight years for 3000 PV installations distributed across the UK. The study considers three PV cell technologies, namely, monocrystalline silicon (Mono-Si), polycrystalline silicon (Poly-Si), and thin-film Cadmium Telluride (CdTe). The available raw data undergoes three key stages: normalization, filtering, and aggregation, before the degradation analysis of the considered installations. This algorithm can be considered as one of the paper contributions. Results show that a maximum degradation rate of-1.43%/year is observed for the CdTe type, whereas Poly-Si and Mono-Si PVs have annual degradation rates of-0.94% and-0.81% respectively. Moreover, this article exploits the monthly mean performance ratio (PR) for all the examined PV sites. The highest PR value of 87.97% is calculated for the Mono-Si PV installations, while 85.08% and 83.55% is calculated for Poly-Si and CdTe installations, respectively.

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Localization and Characterization of a Degraded Site in Crystalline Silicon Photovoltaic Cells Exposed to Acetic Acid Vapor

Cited by 21 publications

References 27 publications

Degradation of copper‐plated silicon solar cells with damp heat stress

Degradation of copper‐plated silicon solar cells with damp heat stress

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

Insights on the Degradation and Performance of 3000 Photovoltaic Installations of Various Technologies Across the United Kingdom

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