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High efficiency large area SnO/sub 2//n-Si and ITO/n-Si Heterojunction solar cells

Conference · · Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States)
OSTI ID:5391037
; ;
Optimization of the spray-deposition process, metal-grid pattern, and AR properties of SnO/sub 2/ and ITO films have yielded high efficiency SnO/sub 2//n-Si and ITO/n-Si cells. An efficiency of 14.6% has been achieved for a 4.2 cm/sup 2/ ITO/n-Si cell. And for large area (20 cm/sup 2/) cells the authors have obtained efficiencies of 13.6% and 13.8% for SnO/sub 2//n-Si and ITO/n-Si cells, respectively. High efficiency modules consisting of 2-inch diameter cells connected in series were made and shown to be compatible with the standard EVA encapsulation process used for p-n junction silicon cells. The authors have found that the UV-induced degradation in V/SUB oc/ can be restored by low temperature annealing. Many UV light absorbing material placed in front of the cells can eliminate degradation. In particular, SnO/sub 2//n-Si and ITO/n-Si cells encapsulated in EVA do not show any decrease in V/SUB oc/ and efficiency over an extended period of sunlight exposure.
Research Organization:
Exxon Research and Engineering Co., Linden, NJ
OSTI ID:
5391037
Report Number(s):
CONF-820906-
Conference Information:
Journal Name: Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States)
Country of Publication:
United States
Language:
English

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Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ANNEALING
ANTIREFLECTION COATINGS
CHALCOGENIDES
COATINGS
DEPOSITION
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ENCAPSULATION
EQUIPMENT
HEAT TREATMENTS
HETEROJUNCTIONS
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
P-N JUNCTIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
QUANTUM EFFICIENCY
RADIATIONS
SEMICONDUCTOR JUNCTIONS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
SPRAY COATING
SURFACE AREA
SURFACE COATING
SURFACE PROPERTIES
THERMAL DEGRADATION
TIN COMPOUNDS
TIN OXIDES
ULTRAVIOLET RADIATION