Investigation of photovoltaic mechanisms in polycrystalline thin-film solar cells. Interim technical report, November 1, 1980-July 31, 1981
Effort is reported on measurement technique development to assess the utility of Deep-Level Transient Spectroscopy (DLTS) methods in characterizing polycrystalline silicon that was deliberately doped with Ti during growth. Difficulties encountered with lateral DLTS measurements are discussed. In this approach, modulation of the grain boundary, double-depletion region produces the entire DLTS signal. Major effort has been applied in grain boundary characterization and control. The most significant accomplishments to date have involved laser scanning of slices of Wacker SILSO polysilicon having nearly identical grain structure. By using various kinds of treatments and by comparing treated and untreated substrates having nearly identical grain structure, control of grain boundary photocurrent suppression (..delta..I/sub ph/) over the range 1% less than or equal to ..delta..I/sub ph/ less than or equal to 40% was demonstrated.
- Research Organization:
- Solar Energy Research Inst. (SERI), Golden, CO (United States); Westinghouse Research and Development Center, Pittsburgh, PA (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 5356231
- Report Number(s):
- SERI/PR-9233-1-T2; ON: DE82013338
- Country of Publication:
- United States
- Language:
- English
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Photovoltaic mechanisms in polycrystalline thin film silicon solar cells. Technical progress report No. 2, 1 November 1979-31 January 1980
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Related Subjects
SILICON SOLAR CELLS
GRAIN BOUNDARIES
MEASURING METHODS
AUGER ELECTRON SPECTROSCOPY
DOPED MATERIALS
ELLIPSOMETRY
LASER RADIATION
MICROSTRUCTURE
OPTICAL SCANNERS
OXIDES
PASSIVATION
PHOTOCURRENTS
POLYCRYSTALS
SPECTROSCOPY
TITANIUM
TRAPS
CHALCOGENIDES
CRYSTAL STRUCTURE
CRYSTALS
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
MATERIALS
METALS
OPTICAL EQUIPMENT
OXYGEN COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
RADIATIONS
SOLAR CELLS
SOLAR EQUIPMENT
TRANSITION ELEMENTS
140501* - Solar Energy Conversion- Photovoltaic Conversion