HETERO-CONTACT SOLAR CELL AND METHOD FOR THE PRODUCTION THEREOF
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United States of America Patent
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Issued Date -
Apr 16, 2015
app pub date -
May 6, 2013
filing date -
May 16, 2012
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A hetero-contact solar cell has a front side provided for an incidence of solar radiation. The solar cell has an absorber of a crystalline semiconductor material of a first conductivity type, an amorphous semiconductor layer of the first conductivity type doped more highly than the absorber and an electrically conductive, transparent front side conduction layer provided on the amorphous semiconductor layer. A front side contact is provided on the solar cell and has spaced-apart contact structures. An emitter of a second conductivity type opposite to the first conductivity type is provided on a back side. A back side contact is arranged on the back side. The emitter-related absorption losses of the solar cells can be eliminated by the back side contact having a back side contact layer extending over the surface of the back side, and the front side conduction layer containing a specific resistance from 7×10−4 to 50×10−4 Ωcm.
First Claim
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