Investigation of mechanically hard, chemically inert antireflection coatings for photovoltaic solar modules. Final technical report, April 1, 1980-March 31, 1981
The overall objective of this program is to determine the optical properties of i-Carbon (diamond-like) films and determine if these films can be developed into antireflecting (AR) coatings for silicon solar cells. The i-C films have been produced on glass, silicon, and KCl by radio frequency (RF) plasma decomposition of the alkane gases. Films were also produced on silicon solar cells by low-energy ion beam techniques. These coatings did not perform as well as those made from hydrocarbon gases. Significant progress has been made in understanding the deposition parameters that affect the optical properties of the films. The optical constants n and k have been determined over a large range of process parameters and source gas. The degree of hydrogen incorporation in these films has been studied by SIMS analysis. It was found that the lower optically absorbing films contain more hydrogen. This hydrogen does not, however, manifest itself in fundamental C-H absorption bands in the infrared. Very efficient single-layer quarter-wave i-C AR coatings have been produced on single-crystal and SOC Si solar cells. An increase in cell efficiency of 40% over uncoated cells has been achieved.
- Research Organization:
- Solar Energy Research Inst. (SERI), Golden, CO (United States); Honeywell Corporate Technology Center, Bloomington, MN (USA)
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 5192037
- Report Number(s):
- SERI/TR-9010-3-T1; ON: DE82007267
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
DEPOSITION
OPTICAL PROPERTIES
SILICON SOLAR CELLS
ANTIREFLECTION COATINGS
ABSORPTIVITY
CHEMICAL VAPOR DEPOSITION
EFFICIENCY
ENERGY BEAM DEPOSITION
FILMS
GLASS
HYDROCARBONS
HYDROGEN
POTASSIUM CHLORIDES
REFRACTIVITY
SILICON
SPECTRAL RESPONSE
SUBSTRATES
ALKALI METAL COMPOUNDS
CHEMICAL COATING
CHLORIDES
CHLORINE COMPOUNDS
COATINGS
DIRECT ENERGY CONVERTERS
ELEMENTS
EQUIPMENT
HALIDES
HALOGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
SEMIMETALS
SOLAR CELLS
SOLAR EQUIPMENT
SURFACE COATING
140501* - Solar Energy Conversion- Photovoltaic Conversion