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Investigation of moisture ingress and egress in polymer – Glass laminates for PV encapsulation

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conference contribution
posted on 20.05.2019 by Nikoleta Kyranaki, Marko Jankovec, Marko Topic, Ralph Gottschalg, Tom Betts
The combinations of different and time-varying environmental conditions affect PV modules operating outdoors, both instantaneously and by causing different types of long-term performance degradation and failure modes. Among the most crucial environmental stressors for long-term effects is moisture ingress. Moisture reacts with the back sheet, encapsulant and outer parts of the solar cells. If the encapsulant is the commonly-used ethylene vinyl acetate (EVA), moisture that has entered the laminate reacts with the VA content, producing acetic acid. This reacts with the contacts on the cells, causing corrosion and eventual negative impact on the electrical output. This work investigates the rates and patterns of moisture ingress into and egress from c-Si PV laminates as the external humidity changes, through both simulation and experiment.

Funding

This study has received funding from the European Union's H2020 programme SOLAR- TRAIN under grant agreement No 721452.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

The 15th Photovoltaic Science, Applications and Technology Conference

Citation

KYRANAKI, N. ... et al., 2019. Investigation of moisture ingress and egress in polymer – Glass laminates for PV encapsulation. IN: Hutchins, M. Crook, R. and Cole, A. (eds.) Proceedings of the 15th Photovoltaic Science, Applications and Technology Conference (PVSAT-15), Scarman Conference Centre, University of Warwick, 10th - 12th April, pp 41-44.

Publisher

© The Solar Energy Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

04/02/2019

Publication date

2019

Notes

This is a conference paper.

ISBN

0904963853

Language

en

Location

Scarman Conference Centre, University of Warwick

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