NOVELTY - Photo-chemical solar cell with nanoneedle electrode comprises: a first conductive substrate (10); working electrode (with pore size of 5-25 nm) (20) formed from semiconductor oxide layer with nanoneedle structure comprising organometallic compound and hydrocarbon compound; photosensitive layer (30), adsorbed on the working electrode; a second conductive substrate, placed on the top of photosensitive layer; a counter electrode (50), placed between the second conductive substrate and photosensitive layer; and a electrolyte layer (40), filled between the working electrode and counter electrode.    USE - Used as photo-chemical solar cell with nanoneedle electrode.    ADVANTAGE - The nanoneedle electrode increases the specific surface area of the semiconductor thin film, which can combine effectively with the photosensitive layer, increasing photon absorption and improving its electronic conduction rate.    DETAILED DESCRIPTION - Photo-chemical solar cell with nanoneedle electrode comprises: a first conductive substrate (10); a working electrode (with pore size of 5-25 nm) (20), placed on the first conductive substrate, formed from a semiconductor oxide layer with nanoneedle structure which is composed of an organometallic compound and a hydrocarbon compound; a photosensitive layer (30), adsorbed on the working electrode; a second conductive substrate, placed on the top of the photosensitive layer; a counter electrode (50), placed between the second conductive substrate and photosensitive layer; and a electrolyte layer (40), filled between the working electrode and counter electrode. An INDEPENDENT CLAIM is also included for manufacturing the photo-chemical solar cell, comprising: providing a first conductive substrate; placing a working electrode on the first conductive substrate; providing a photosensitive layer, adsorbed on the working electrode; placing a second conductive substrate on the top of the photosensitive layer; placing a counter electrode between the second conductive substrate and the photosensitive layer; and filling a electrolyte layer between the working electrode and the counter electrode.    DESCRIPTION OF DRAWING(S) - The figure shows the photo-chemical solar cell with nanoneedle electrode.    First conductive substrate (10)    Working electrode (20)    Photosensitive layer (30)    Electrolyte layer (40)    Counter electrode (50)