Low-high heterojunction of c-Si substrate and {micro}c-Si:H film under rear contact for improvement of efficiency
- Sharp Corp., Shinjo, Nara (Japan). Energy Conversion Labs.
For improvement of conversion efficiencies of single-crystalline silicon (c-Si) solar cells, the low-high heterojunction structure of p-type c-Si substrate and a highly conductive B doped hydrogenated microcrystalline silicon ({micro}c-Si:H) film with a wide optical bandgap under a rear contact has been investigated. This paper reports that a conversion efficiency of 21.1% was obtained for a 5 cm x 5 cm c-Si solar cell with the {micro}c-Si:H film. This result has come from the examinations of the depositing conditions of the film and the improvement of rear reflection using a SiN film between the {micro}c-Si:H film and the rear contact. From TEM observations, it was clear that the {micro}c-Si:H film consisted of two kinds of domain classified by the crystallite degree of spatial order of Si atoms.
- OSTI ID:
- 191013
- Report Number(s):
- CONF-941203-; ISBN 0-7803-1459-X; TRN: IM9610%%14
- Resource Relation:
- Conference: 1. world conference on photovoltaic energy conversion, Waikoloa, HI (United States), 5-9 Dec 1994; Other Information: PBD: 1994; Related Information: Is Part Of 1994 IEEE first world conference on photovoltaic energy conversion: Conference record of the twenty-fourth IEEE photovoltaic specialists conference -- 1994. Volume 2; PB: 1268 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-efficiency silicon heterojunction solar cells: Status and perspectives
Study of Passivation in the Gap Region Between Contacts of Interdigitated-Back-Contact Silicon Heterojunction Solar Cells: Simulation and Voltage-Modulated Laser-Beam-Induced-Current
Related Subjects
36 MATERIALS SCIENCE
SILICON SOLAR CELLS
FABRICATION
PERFORMANCE
SILICON
CHEMICAL VAPOR DEPOSITION
SILICON NITRIDES
SILICON OXIDES
METALS
HYDROGEN
SILANES
BORANES
DOPED MATERIALS
BORON
SURFACE COATING
PASSIVATION
TITANIUM ALLOYS
PALLADIUM ALLOYS
SILVER ALLOYS
ALUMINIUM
ELECTRIC POTENTIAL
ELECTRIC CURRENTS
EFFICIENCY
FILL FACTORS
TRANSMISSION ELECTRON MICROSCOPY