Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1981-05-15
1982-11-23
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136255, 136256, H01L 3106
Patent
active
043607012
ABSTRACT:
A heat transparent high intensity solar cell has improved efficiency.
A surface of each solar cell (10,16,22) has a plurality of grooves (12,14,18,20,24). Each groove has a vertical face (26,30) and a slanted face (28,32) that is covered by a reflecting metal (34,36).
Light rays (38,40) are reflected from the slanted face through the vertical face where they traverse a photovoltaic junction (60). As the light rays travel to the slanted face of an adjacent groove, they again traverse the junction. The underside of the reflecting coating directs the light rays toward the opposite surface of solar cell as they traverse the junction again. When the light rays travel through the solar cell and reach the saw toothed grooves on the under side, the process of reflection and repeatedly traversing the junction again takes place. The light rays ultimately emerge from the solar cell as shown in FIG. 4.
These solar cells are particularly useful at very high levels of insolation because the infrared or heat radiation passes through the cells without being appreciably absorbed to heat the cell.
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Manning John R.
Musial Norman T.
Shook Gene E.
The United States of America as represented by the Administrator
Weisstuch Aaron
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