Studies of grain boundaries in small-grained polycrystalline silicon solar cells

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5570713

Young, R T; van der Leeden, G A; Wood, R F; Narayan, J

Progress in the development of small-grained (10 to 100 ..mu..m) polycrystalline Si solar cells is hampered by the present poor knowledge of physical and chemical properties of grain boundaries and the lack of satisfactory processing techniques for junction formation. In the work discussed in this paper we have studied grain boundaries and their effects in polycrystalline silicon with grain sizes of 1 to 2 mm and in smaller grained material with grain sizes of 10 ..mu..m and 40 to 50 ..mu..m. Results for various recombination effects observed in the large-grained material are described and the influence of lithium passivation on the electrical properties of the small-grained material and on the characteristics of solar cells made from it are reported.

• Research Organization: Oak Ridge National Lab., TN (USA); Helionetics, Inc., San Diego, CA (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5570713
• Report Number(s): CONF-820906-39; ON: DE84000682
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ALKALI METALS
CRYSTAL DEFECTS
CRYSTAL DOPING
CRYSTAL STRUCTURE
CRYSTALS
DIRECT ENERGY CONVERTERS
ELECTRICAL PROPERTIES
ELEMENTS
EQUIPMENT
GRAIN BOUNDARIES
GRAIN SIZE
LITHIUM
METALS
MICROSTRUCTURE
PASSIVATION
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
POLYCRYSTALS
RECOMBINATION
SILICON SOLAR CELLS
SIZE
SOLAR CELLS
SOLAR EQUIPMENT
TRANSMUTATION