| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a highly efficient solar battery element having a simple constitution. <P>SOLUTION: The solar battery element 20 has a semiconductor substrate 1 as a first conductivity type, a first opposite-conductivity-type layer 2 formed on one principal surface of the semiconductor substrate 1, as the opposite-conductivity type to the conductivity type of the substrate 1; a plurality of through-holes 3 each of which ranges from the one principal surface of the semiconductor substrate 1 to the other principal surface thereof, and each of whose inner walls is coated with a second opposite-conductivity-type layer 6 or a first insulating-material layer 6; each first electrode 4 so formed as to range from the one-principal-surface side to the other-principal-surface side via each through-hole 3, and connected with the first opposite-conductivity-type layer 2; each second electrode 5 formed on the other principal surface and having the different polarity from the polarity of each first electrode 4; and each second insulating-material layer 7 interposed between the other-principal-surface side and each first electrode 4. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
