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Solar cells
#1

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SOLAR CELLS

General Information

Research conducted by Panasonic over many years on solar cells and the application of this new technology culminated in 1984 with the successful development of the world s first thin-film solar cell using compound semiconductors. The company named these cells Sunceram II. The Sunceram II cells have good weatherproof properties and high spectral sensitivity characteristics over a wide wavelength range. Furthermore, since the entire film-forming process involves only screenprinting and since belt sintering is employed, these cells are very amenable to mass production. It also means that high-voltage type solar cells can be formed at a high density on a single glass substrate, and that it is easy to produce them with larger surface areas. Besides developing compact and lightweight Sunceram II modules for outdoor use which maintain a stable performance over prolonged periods, Panasonic has developed compact, high-performance Sunceram II sign units which are used in combination with the company's own coin-type rechargeable batteries. With its sights firmly fixed on power sources for the new forms of soft energy which will be abundant in the twenty-first century, Panasonic is committed to developing new products which will fill the needs of the market.
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#2

Solar cells
Overview
Solar cell fundamentals
Novel solar cell structures
Thin film solar cells
Next generation solar cell
Appealing Characteristics
Consumes no fuel
No pollution
Wide power-handling capabilities
High power-to-weight ratio
Overview
Solar cell fundamentals
Novel solar cell structures
Thin film solar cells
Next generation solar cell
Schottky Barrier Cell
Principle similar to p-n junction cell
Cheap and easy alternative to traditional cell
Limitations:
Conducting grid on top of metal layer
Surface damage due to high temperature in grid-attachment technique
Thin Film Solar Cells
Produced from cheaper polycrystalline materials and glass
High optical absorption coefficients
Bandgap suited to solar spectrum
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