Batteries: thermoelectric and photoelectric – Thermoelectric – Radiation pyrometer
Patent
1977-05-11
1978-06-13
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Thermoelectric
Radiation pyrometer
136 89SJ, 148174, 357 30, 357 59, H01L 3106
Patent
active
040947041
ABSTRACT:
Composite solar cells of improved efficiency comprise two cells of different characteristics arranged in optical series but electrically insulated from each other. Preferably, each cell is of larger crystal grain size than its substrate, which grain size is achieved by growing the cell semi-conductor on a molten intermediate rheotaxy layer of a suitable semi-conductor which solidifies at a temperature below the melting temperature of the solar cell semi-conductor. The substrate and the intermediate rheotaxy layer of the overlying cell are transparent to that fraction of sunlight which is utilized by the underlying cell. Various configurations of overlying and underlying cells are disclosed.
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