NOVELTY - Manufacturing an organic optoelectronic thin film, comprises: providing a substrate and a first electrode (23); forming a semiconductor layer (22) (including a polyethylene glycol) on the substrate; forming a conductive polymer (24) layer on the first electrode; placing the substrate and the semiconductor layer on the conductive polymer layer, and attaching the semiconductor layer with the conductive polymer layer; removing the substrate; and forming a second electrode (25) on the semiconductor layer to produce the organic optoelectronic thin film.    USE - The method is useful for manufacturing an organic optoelectronic thin film, which is a solar cell, a flexible solar cell and module, a LED or a thin film transistor (claimed).    ADVANTAGE - The method: simplifies the manufacturing process, and saves the trouble of manufacturing the polydimethylsiloxane print mold to achieve the same transfer effect; and utilizes a roll-to-roll manufacturing process to coat the solution onto the flexible substrate quickly and easily, so as to further simplify the manufacturing process and reduce the manufacturing time for an easier entry of a mass production.    DETAILED DESCRIPTION - Manufacturing an organic optoelectronic thin film, comprises: providing a substrate and a first electrode (23); forming a semiconductor layer (22) (including a polyethylene glycol) on the substrate; forming a conductive polymer (24) layer on the first electrode; placing the substrate and the semiconductor layer on the conductive polymer layer, and attaching the semiconductor layer with the conductive polymer layer; removing the substrate; and forming a second electrode (25) on the semiconductor layer to produce the organic optoelectronic thin film. A first adhesion is generated between the semiconductor layer and the substrate, and a second adhesion is generated between the semiconductor layer and the conductive polymer layer, and the second adhesion is greater than the first adhesion, so that when the substrate is removed, the semiconductor layer is still attached onto the conductive polymer layer.    DESCRIPTION OF DRAWING(S) - The figure shows a procedure of a manufacturing method of a solar cell.    Solar cell (2)    Semiconductor layer (22)    First electrode (23)    Electrically conductive polymer (24)    Second electrode (25)