NOVELTY - An electrode substrate (51) is provided with semiconductor porous layer (50) where sensitizing dye (53) is supported. The semiconductor porous layer is formed from spherical oxide semiconductor fine particle (A), and indefinite shaped oxide semiconductor fine particle (B) whose particle diameter is smaller than spherical oxide semiconductor fine particle (A). The semiconductor porous layer has porosity of 60% or more, and maximum peak of pore volume in semiconductor porous layer exists in region having pore diameters of 30 nm or more.    USE - Electrode substrate is used for dye-sensitized solar cell for polycrystalline-silicon photoelectric transducer.    ADVANTAGE - The dye-sensitized solar cell comprising electrode substrate has high battery characteristics and conversion efficiency.    DETAILED DESCRIPTION - An electrode substrate is provided with the semiconductor porous layer where the sensitizing dye is supported. The semiconductor porous layer is formed from spherical oxide semiconductor fine particle (A), and indefinite shaped oxide semiconductor fine particle (B) whose particle diameter is smaller than spherical oxide semiconductor fine particle (A). The semiconductor porous layer has porosity of 60% or more, and maximum peak of pore volume in semiconductor porous layer exists in the region having pore diameters of 30 nm or more. The maximum peak of the pore volume in semiconductor porous layer is measured by Brunauer Emmett Teller method. The oxide semiconductor fine particle (A,B) are titanium dioxide. The electrode substrate is manufactured using a semiconductor paste which is distributed in the organic solvent containing terpineol and ethyl cellulose. INDEPENDENT CLAIMS are included for the following:    (1) manufacture of electrode substrate; and    (2) semiconductor paste.    DESCRIPTION OF DRAWING(S) - The drawing shows sectional view of dye sensitizing semiconductor porous layer formed in electrode substrate.    Spherical oxide semiconductor fine particle (A)    Indefinite shaped spherical oxide semiconductor fine particle (B)    Semiconductor porous layer (50)    Substrate (51)    Sensitizing dye (53)