| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a highly efficient solar battery by largely improving electromotive force per unit area, and in addition to provide a highly efficient solar battery applicable for multiple purposes by reducing cost by downsizing and realizing a flexible form. <P>SOLUTION: P-type and n-type silicon is formed into an n-type micro particle and a p-type micro fine particle or the like, and they are integrally combined to form a pn micro joint layer, so as to largely increase a pn joint area per unit area. Thus, more pairs of generated electrons and holes are generated, to facilitate polarization resulting in more electromotive force obtained. In addition, an n-type silicon layer 2a on a light receiving face side is formed into an integrally combined layer by n-type micro particles 5 and a smaller light diffusing material 8, and integrally combined with the pn micro joint layer 4, thereby obtaining the pn micro joint layer with a more three-dimensional thickness, resulting in a small and highly efficient solar battery. Further, not only the pn micro joint layer 4 but also the n-type silicon layer 2a to serve as the light receiving face and a p-type silicon layer 3a on the rear are formed to be particles (including fine particles) of a micrometer level, thereby obtaining a flexible and highly efficient solar battery. In addition, by integrally forming the above layers combined as a band further into a spiral, a more efficient solar power generation panel can be obtained. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
