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Helmut Foell

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Publication

Featured researches published by Helmut Foell.

Archive | 1988

Etching method for generating apertured openings or trenches in layers or substrates composed of n-doped silicon

Helmut Foell; Volker Lehmann

Archive | 1983

Device for manufacturing large-surface, tape-shaped silicon bodies for solar cells

Helmut Foell; Josef Grabmaier; Richard Falckenberg

Archive | 1988

Method and measuring instrument for identifying the diffusion length of the minority charge carriers for non-destructive detection of flaws and impurities in semiconductor crystal bodies

Helmut Foell; Volker Lehmann

Archive | 1983

Device for asymmetrically coating a tape-shaped carrier body with silicon for further processing into solar cells

Richard Falckenberg; Helmut Foell; Josef Grabmaier

Archive | 1983

Process for producing crystalline silicon bodies having a structure which increases the surface area, and use of said bodies as substrates for solar cells and catalysts

Helmut Foell; Josef Dr Rer Nat Grabmaier; Volker Lehmann

Archive | 1990

METHOD AND APPARATUS FOR LARGE-AREA ELECTRICAL CONTACTING OF A SEMICONDUCTOR CRYSTAL BODY WITH THE ASSISTANCE OF ELECTROLYTES

Helmut Foell; Volker Lehmann

Archive | 1988

Black radiator for use as an emitter in calibratable gas sensors

Volker Lehmann; Helmut Foell

Archive | 1983

Apparatus and method for manufacturing tape-shaped silicon bodies for solar cells

Helmut Foell; Bernhard Dipl Phys Freienstein; Karl Dipl Phys Geim; Josef Grabmaier; Otmar Dr Hintringer

Archive | 1990

Method for topically-resolved determination of the diffusion length of minority charge carriers in a semiconductor crystal body with the assistance of an electrolytic cell

Helmut Foell; Volker Lehmann

Archive | 1990

Method for determining the recombination rate of minority carriers at boundary surfaces between semiconductors and other substances

Helmut Foell; Volker Lehmann

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Josef Dr Rer Nat Grabmaier

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Volker Lehmann

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Richard Falckenberg

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Bernhard Dipl Phys Freienstein

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Josef Grabmaier

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Karl Dipl Phys Geim

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Otmar Dr Hintringer

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Juergen Schneider

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