| 摘要 |
Disclosed is a solar battery using a silicon semiconductor, having a high quantum-conversion efficiency, requiring few number of production steps during manufacturing, and capable of being recycled in view of environmental load and material recycling. Specifically, the solar battery has a basic structure of P-SN-N junction in which refined silicon clusters are inserted in P-N junction, and includes a quantum dot layer having a multiple energy level structure whose energy level is between an energy level of a valence band and an energy level of a conduction band. The quantum dot layer includes a periodic arrangement of silicon quantum dots formed of silicon clusters of 2.5 nm or less in average particle diameter and the distance between the quantum dots is 1 nm or less.
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