Research on high-efficiency single-junction monolithic thin-film amorphous silicon solar cells. Semiannual report 1 February 1984-31 July 1984
The research program reported here consisted of five tasks. In the Amorphous Silicon Materials Research Task, doped and undoped a-Si:H materials were grown in glow-discharge deposition systems. Disiloxane was contaminating some silane cylinders, and a-Si:H films have had impurity contents of 10/sup 19/ cm/sup -3/. Undoped a-Si:H film diffusion lengths have been approx. 0.5 ..mu..m. In the Nonsemiconductor Materials Research Task, textured tin-oxide coated glass was used. P-I-N solar cells were produced with n-layers having both Al and Ti/Al back contacts. In the Solar Cell Research Task, p-i-n cells were fabricated with conversion efficiencies around 8 to 9% (1.14-cm/sup 2/ areas). Substrates were tin oxide on pyrex glass. In the Monolithic, Intraconnected Cells/Submodule Research Task, a submodule was designed with two parallel arrays of 35 series-connected cells on 12'' by 13'' substrates. A Solarex scribing system was used to pattern both tin oxide and a-Si:H over areas up to 1000 cm/sup 2/. In the Multichamber Deposition System Task, a multichamber system was designed having external heaters, heated rf electrodes, and gas curtains for dopant isolation. A Solarex multichamber deposition system has uniformly deposited a-Si:H over areas of 1000 cm/sup 2/.
- Research Organization:
- Solarex Corp., Newtown, PA (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 5845342
- Report Number(s):
- SERI/STR-211-2610; ON: DE85008773
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
AMORPHOUS STATE
DEPOSITION
DIRECT ENERGY CONVERTERS
EFFICIENCY
EQUIPMENT
FABRICATION
HYDRIDES
HYDROGEN COMPOUNDS
IMPURITIES
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SILANES
SILICON COMPOUNDS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT