Research on stable, high-efficiency, large-area, amorphous-silicon-based submodules, Task B: Semiannual subcontract report, 16 March 1988--15 September 1988
This research concerns the improvement of the efficiency and stability of large-area amorphous silicon photovoltaic submodules, based on both single- and tandem-junction device structures. For the improvement of cell efficiency, carbon-graded a-Si/sub x/C/sub 1-x/:H p-layers, ITO/Ag back reflectors, alternate SnO/sub 2/ substrates, and TiO/sub x/ recombination layers at the n/p interface of tandem cells are described. Significant contributions to the study of transport and defect states in a-Si:H were made using the steady-state photocarrier grating technique, charge collection in thick p-i-n structures, thermally stimulated currents, and current DLTS. An extensive study of the deposition of SiO/sub 2/ barrier layers on soda lime glass to improve SnO/sub 2/:F conductivity is reported. Submodule research includes laser isolation, active scribe tracking, post-fabrication defect removal, and a new interconnect scheme employing two levels of metallization. Power output and aperture area efficiency for single junction submodules were 5.9W (7.0%) for 1 /times/ 1 sq. ft. and 17.7W (6.9%) for 1 /times/ 3 sq. ft. Outdoor stability tests on glass-glass encapsulated tandem submodules are also described.
- Research Organization:
- Solar Energy Research Inst. (SERI), Golden, CO (United States); Chronar Corp., Princeton, NJ (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6108000
- Report Number(s):
- SERI/STR-211-3528; ON: DE89009439
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Research on amorphous silicon-based thin film photovoltaic devices: Task B, Research on stable high efficiency large area, amorphous silicon-based submodules
Research on high-efficiency, single-junction, monolithic, thin-film amorphous silicon solar cells: Final technical report, February 1987
Related Subjects
SILICON SOLAR CELLS
FABRICATION
AMORPHOUS STATE
BOROSILICATE GLASS
DEPOSITION
EFFICIENCY
PROGRESS REPORT
RESEARCH PROGRAMS
SILICON
SILICON CARBIDES
SILICON OXIDES
SUBSTRATES
TESTING
TIN OXIDES
TITANIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
ELEMENTS
EQUIPMENT
GLASS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SEMIMETALS
SILICON COMPOUNDS
SOLAR CELLS
SOLAR EQUIPMENT
TIN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
140501* - Solar Energy Conversion- Photovoltaic Conversion