Solar energy collector having solar selective coating of low reflectance
Patent
·
OSTI ID:6201033
A solar energy collector and process for its preparation are disclosed in which the collector has a solar selective layer of overlying, multiple coatings. The first coating is a reflective metal; the second coating is a semiconductor material being absorbent in the solar spectrum; and the third coating being the coating exposed to solar radiation is a dielectric material defining an anti-reflection guard. The dielectric coating is transparent to radiation in the solar spectrum and has a relatively low refractive index. The thickness of the dielectric coating is of a magnitude to decrease reflectance from the semiconductor coating by destructive interference. The solar selective layer may be prepared by depositing the various coatings in sequence as by thermal evaporation techniques.
- Assignee:
- Owens-Illinois Inc
- Patent Number(s):
- US 4334523
- OSTI ID:
- 6201033
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM
ANTIREFLECTION COATINGS
BLACK COATINGS
CHROMIUM
COATINGS
DEPOSITION
DIELECTRIC MATERIALS
ELEMENTS
EQUIPMENT
EVAPORATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LAYERS
MAGNESIUM COMPOUNDS
MAGNESIUM FLUORIDES
MATERIALS
METALS
OPACITY
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFLECTIVE COATINGS
REFRACTIVITY
SEMICONDUCTOR MATERIALS
SOLAR ABSORBERS
SOLAR COLLECTORS
SOLAR EQUIPMENT
TRANSITION ELEMENTS
TUBES
141000* -- Solar Collectors & Concentrators
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM
ANTIREFLECTION COATINGS
BLACK COATINGS
CHROMIUM
COATINGS
DEPOSITION
DIELECTRIC MATERIALS
ELEMENTS
EQUIPMENT
EVAPORATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LAYERS
MAGNESIUM COMPOUNDS
MAGNESIUM FLUORIDES
MATERIALS
METALS
OPACITY
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFLECTIVE COATINGS
REFRACTIVITY
SEMICONDUCTOR MATERIALS
SOLAR ABSORBERS
SOLAR COLLECTORS
SOLAR EQUIPMENT
TRANSITION ELEMENTS
TUBES