Low-cost solar antireflection coatings. Semiannual report, July 24, 1978-January 24, 1979

Technical Report · Thu Feb 01 00:00:00 EST 1979

DOI:https://doi.org/10.2172/5623775· OSTI ID:5623775

Lin, R J.H.; Lee, J C; Zimmer, P B

Production processes for low-cost organic antireflection (AR) coating and etched AR coating on glass for flat plate collector covers are being developed and improved. The etched AR coating process has been scaled-up to etch full-size glass panes but the chemical control of the etching solution remains a problem. Analytical methods including high performance liquid chromatography, flame exited atomic absorption and infrared spectroscopy, have been investigated as possible monitoring and control devices. Liquid chromatography appears to give some useful information. An investigation of another technique, utilizing the differential refractive index of the etching solution, has just begun. The organic coating, FEP-120 Teflon dispersion, has been shown to be somewhat unstable and efforts are underway to improve the stability of the dispersion. A pretreatment of the glass substrate in hydrofluoric acid substantially improves the abrasion resistance of the coated glass. Further development will optimize this effect. Methods of maintaining thickness control during the coating of full size panels will be determined.

• Research Organization: Honeywell, Inc., Minneapolis, MN (USA). Systems and Research Center
• Sponsoring Organization: USDOE
• DOE Contract Number: EM-78-C-04-5300
• OSTI ID: 5623775
• Report Number(s): ALO-5300-T1
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
ANTIREFLECTION COATINGS
PRODUCTION
FLAT PLATE COLLECTORS
ABSORPTION SPECTROSCOPY
COVERINGS
DISPERSIONS
ETCHING
FABRICATION
GLASS
LIQUID COLUMN CHROMATOGRAPHY
SOLUTIONS
STABILITY
SUBSTRATES
SURFACE COATING
TEFLON
THICKNESS
CHROMATOGRAPHY
COATINGS
DEPOSITION
DIMENSIONS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
SEPARATION PROCESSES
SOLAR COLLECTORS
SPECTROSCOPY
SURFACE FINISHING
141000* - Solar Collectors & Concentrators