NOVELTY - A solar-energy utilization apparatus has transparent base material. The surface of light-incidence side transparent base material is covered on the transparent fine particles having water-repellency and oil repellent property.    USE - For e.g. solar cell, solar water heater and greenhouse.    ADVANTAGE - The solar-energy utilization apparatus has excellent durability, water-separating property, water-repellent property, oil-repellent property, antifouling property, stain resistance property, electric power generation efficiency and heat collecting efficiency.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of solar-energy utilization apparatus. The reactive transparent fine particles having film compound (1) is bonded with the surface of base material through bonding group (1a). The functional group (B) reacts with one end of functional group (A), and forms a covalent bond. The film compound (B) has bonding group (2b) which reacts with the other end of the group, and forms a bond. The reactive transparent base material having film compound (B) is bonded with the surface through the bonding group (2b). The reactive transparent fine particles and reactive transparent base material are contacted. The covalent is formed by reacting functional group (A) and functional group (B), and the surface of transparent base material is connect-fixed by reactive transparent fine particles. The water-repellent oil-repellent compound and covalent bond reacted. The water-repellent oil-repellent compound having bonding group (3b) reacts with one end of the surface of transparent fine particles. The water-repellent oil-repellent film is formed on the surface of the transparent fine particles in the presence of a silanol condensation catalyst. The transparent fine particles are connect-fixed on the surface of base material under atmosphere containing oxygen, and is sintered at 400degreesC. An excess chemical adsorption liquid is washed-removed. The transparent fine particles are directly fixed on the transparent base material.    DESCRIPTION OF DRAWING(S) - The figures shows the process of connect-fixing alumina fine particles on the surface of transparent base material surface. (Drawing includes non-English language text)    Alumina fine particles (5)    Hydroxyl group (6)    Amino group (7)    Monolayer containing amino group (8)    Alumina fine particles (9)