Thin film polycrystalline silicon solar cells. Quarterly report No. 3, July 1, 1979-September 30, 1979

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5478416· OSTI ID:5478416

Ghosh, A. K.; Feng, T.; Maruska, H. P.

The details of the fabrication procedures for making SnO/sub 2//n-Si, ITO/n-Si, and MIS solar cells are given. Using a low cost and highly reproducible spray deposition process for tin oxide and indium tin oxide, we made SnO/sub 2//n-Si and ITO/n-Si, solar cells with power conversion efficiencies of 10 and 13% for polycrystalline (Wacker) and single crystal silicon, respectively. Continued improvements in the efficiencies of diffused p-n junction cells were made; efficiencies of 10.3 and 9% were obtained for polysilicon (Wacker) cells of 1- and 20-cm/sup 2/ sizes, respectively. The effects of grain boundaries on the generation of photocurrent were studied using the EBIC technique. In addition to using the intensity modulated mode, a y- modulation technique, which gave more details, was used in the EBIC studies. By studying the Hall mobility of polysilicon in the dark and under illumination, we have developed a phenomenological theory which is capable of explaining the observed resistivity and mobility results. A comparison of the spectral response curves of SnO/sub 2//n-Si heterojunction and diffused p/n junction cells indicates a lower diffusion length in the diffused cells. The stability studies of the SnO/sub 2//n-Si cells were continued.

• Research Organization: Exxon Research and Engineering Co., Linden, NJ (USA). Advanced Energy Systems Labs.
• DOE Contract Number: AC03-79ET23047
• OSTI ID: 5478416
• Report Number(s): DOE/SF/23047-3
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CARRIER MOBILITY
CHALCOGENIDES
CRYSTAL STRUCTURE
CRYSTALS
DEPOSITION
DIFFUSION LENGTH
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EQUIPMENT
FABRICATION
GRAIN BOUNDARIES
INDIUM COMPOUNDS
INDIUM OXIDES
JUNCTIONS
MICROSTRUCTURE
MIS TRANSISTORS
MOBILITY
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
P-N JUNCTIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
POLYCRYSTALS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
SPECTRAL RESPONSE
SPRAY COATING
STABILITY
SURFACE COATING
TIN COMPOUNDS
TIN OXIDES
TRANSISTORS