| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem that, when plutonium 238 2 is superimposed on a solar cell 1, theα-rays penetrate glass or plastics 4 of a protective substrate on the solar cell, reach the solar cell, and deteriorate the cell, in the background that an electromotive force is not recognized by irradiation of traceα-rays for the purpose of power generation because theα-rays 3 are particles and have extremely weak transmissivity. SOLUTION: The solar cell 1 has two films. As for the first film, a stand for supporting a surface layer of the solar cell is made of glass or plastics 4, andα-particles 3 are interrupted thereby. As for the second film, a transparent conductive film 5 is provided in the surface layer of the solar cell, and theα-particles 3 are interrupted thereby. Therefore, the problem can be solved by placing plutonium under the two films and just above a p layer 6 of the solar cell. In this case, a stronger electromotive force can be expected by using a phosphor.</p> |
