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Title: Investigation of test methods, material properties, and processes for solar cell encapsulants. Eleventh quarterly progress report, November 12, 1978-February 12, 1979

Abstract

The goal of this program is to identify, evaluate, and recommend encapsulant materials and processes for the production of cost-effective, long-life solar cell modules. During this quarter the technical activities were directed toward the reformulation of ethylene/vinyl acetate copolymer for use as a pottant compound in solar cell module fabrication. Successful formulations were devised that lowered the temperature required for cure and raised the gel content. A major volatile component was also eliminated (acrylate crosslinking agent) which should aid in the production of bubble free laminates. Adhesive strengths and primers for the bonding of ethylene/vinyl acetate to superstrate and substrate materials were assessed with encouraging results. The incorporation of silane compounds either directly into the polymer as a blend or as a surface coating gave high bond strengths (20 to 30 lbs/in.) to glass. The bonds endured 24 hours of boiling water with no delamination. Adhesion to hardboard was also excellent; however, the bonds were severely weakened by water immersion, the failure occurring within the surface of the hardboard. Some type of waterproofing treatment will be required to make hardboard products viable substrates. A survey of scrim materials was also conducted. These open hole weaves are intended for use asmore » spacers between the cell and substrate to ensure thorough cell encapsulation, to improve insulation resistance, and to prevent migration of the pigmented pottant over the cell surface.« less

Publication Date:
Research Org.:
Springborn Labs., Inc., Enfield, CT (USA)
Sponsoring Org.:
USDOE; JET PROPULSION LABORATORY
OSTI Identifier:
5848884
Report Number(s):
DOE/JPL/954527-10
DOE Contract Number:  
NAS-7-100-954527
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; ACETATES; PHYSICAL PROPERTIES; COPOLYMERS; ENCAPSULATION; MATERIALS; SILICON SOLAR CELLS; SOLAR CELL ARRAYS; ADHESION; BONDING; COST; DATA COMPILATION; DEGASSING; DENSITY; ELONGATION; EVALUATION; FAILURES; OPTICAL PROPERTIES; POTTING; POTTING MATERIALS; REFRACTION; TABLES; TENSILE PROPERTIES; CARBOXYLIC ACID SALTS; DATA; DATA FORMS; DIRECT ENERGY CONVERTERS; FABRICATION; INFORMATION; JOINING; MECHANICAL PROPERTIES; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; POLYMERS; SOLAR CELLS; 140501* - Solar Energy Conversion- Photovoltaic Conversion; 360404 - Materials- Polymers & Plastics- Physical Properties- (-1987); 360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)

Citation Formats

None. Investigation of test methods, material properties, and processes for solar cell encapsulants. Eleventh quarterly progress report, November 12, 1978-February 12, 1979. United States: N. p., 1979. Web. doi:10.2172/5848884.
None. Investigation of test methods, material properties, and processes for solar cell encapsulants. Eleventh quarterly progress report, November 12, 1978-February 12, 1979. United States. doi:10.2172/5848884.
None. Thu . "Investigation of test methods, material properties, and processes for solar cell encapsulants. Eleventh quarterly progress report, November 12, 1978-February 12, 1979". United States. doi:10.2172/5848884. https://www.osti.gov/servlets/purl/5848884.
@article{osti_5848884,
title = {Investigation of test methods, material properties, and processes for solar cell encapsulants. Eleventh quarterly progress report, November 12, 1978-February 12, 1979},
author = {None},
abstractNote = {The goal of this program is to identify, evaluate, and recommend encapsulant materials and processes for the production of cost-effective, long-life solar cell modules. During this quarter the technical activities were directed toward the reformulation of ethylene/vinyl acetate copolymer for use as a pottant compound in solar cell module fabrication. Successful formulations were devised that lowered the temperature required for cure and raised the gel content. A major volatile component was also eliminated (acrylate crosslinking agent) which should aid in the production of bubble free laminates. Adhesive strengths and primers for the bonding of ethylene/vinyl acetate to superstrate and substrate materials were assessed with encouraging results. The incorporation of silane compounds either directly into the polymer as a blend or as a surface coating gave high bond strengths (20 to 30 lbs/in.) to glass. The bonds endured 24 hours of boiling water with no delamination. Adhesion to hardboard was also excellent; however, the bonds were severely weakened by water immersion, the failure occurring within the surface of the hardboard. Some type of waterproofing treatment will be required to make hardboard products viable substrates. A survey of scrim materials was also conducted. These open hole weaves are intended for use as spacers between the cell and substrate to ensure thorough cell encapsulation, to improve insulation resistance, and to prevent migration of the pigmented pottant over the cell surface.},
doi = {10.2172/5848884},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}