The present invention discloses a small spherical solar cell SS (spherical semiconductor) and the manufacturing method for the same, comprising: a spherical core 1; a reflective film 2 formed on the surface of core 1; a semiconductor thin film layer (p type polycrystalline silicon thin film 4a, n+ diffusion layer 7) which is approximately spherical and is formed on the surface of reflective film 2; a n+p junction 8 which is formed on semiconductor thin film layer; passivation film 9; and a surface protective film 10 of titanium dioxide; a pair of electrodes 11a, 11b connected to both sides of n+p junction 8. Other than spherical solar cell SS, the following are also disclosed: a spherical crystal manufacturing device; 2 types of spherical solar cells; 2 types of spherical photocatalytic elements; a spherical light emitting element which emits visible blue light; 2 types of spherical semiconductor device materials.