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High-efficiency silicon solar cells for a 22-sun line-focus module

Silver, J R ; Patel, B

United States 1990

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Título:
High-efficiency silicon solar cells for a 22-sun line-focus module
Autor: Silver, J R ; Patel, B
Assuntos: 140501 - Solar Energy Conversion- Photovoltaic Conversion ; 141000 - Solar Collectors & Concentrators ; CHALCOGENIDES ; COMPARATIVE EVALUATIONS ; DESIGN ; DIMENSIONS ; DIRECT ENERGY CONVERTERS ; EFFICIENCY ; FABRICATION ; INTERFACES ; MEASURING METHODS ; OPTIMIZATION ; OXIDES ; OXYGEN COMPOUNDS ; PERFORMANCE TESTING ; PHOTOELECTRIC CELLS ; PHOTOVOLTAIC CELLS ; PRISMS ; PROCESSING ; QUANTUM EFFICIENCY ; SOLAR CELLS ; SOLAR CONCENTRATORS ; SOLAR ENERGY ; SOLAR EQUIPMENT ; TEMPERATURE EFFECTS ; TESTING
Notas: DOE/CE
AC04-76DP00789
SAND-90-7026
Descrição: The purpose of this program was for Solarex, a commercial silicon solar cell supplier, to demonstrate the capability of fabricating high efficiency 38.4 cm{sup 2} concentrator cells in a production environment. These cells were designed for use in 22-sun line-focus concentrator module that could generate 20 kW for the PVUSA EMT-1 project. The cells were fabricated using p-type, .8 ohm-cm silicon, randomly textured fronts, dual-layer anti-reflective coatings, passivated emitters, restricted emitter/metallization contact areas, and silver gridlines with large cross-sectional areas. Prismatic covers were used to eliminate losses from gridline shadowing. Cell efficiencies as high as 20.34% were demonstrated on covered cells at 20 suns air mass 1.5 illumination. The process sequence includes a single diffusion step, a thin thermal oxide growth, and two mechanically registered photolithography steps. 13 figs., 3 tabs.
Editor: United States
Data de criação/publicação: 1990
Idioma: Inglês

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High-efficiency silicon solar cells for a 22-sun line-focus module

Silver, J R ; Patel, B

United States 1990

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