Photoelectric conversion elements, the method of manufacturing a photoelectric conversion element, an image sensor and a radiation image detector

The present invention is less photoelectric conversion element having a dark current while using the organic material, a method of manufacturing a photoelectric conversion element, to provide an image sensor and a radiation image detector. Method of manufacturing a photoelectric conversion element includes a step of forming a transparent electrode on a supporting substrate, a step of fabricating the organic semiconductor solution by dissolving the organic semiconductor material in a solvent, a step of applying an organic semiconductor solution, the photoelectric and annealing step of heating the supporting substrate conversion element is formed a predetermined time has, the solubility of the organic semiconductor solution B (wt%), when the annealing temperature for heating in an annealing step to T (° C.), solubility B and the annealing temperature T, 0.05 ≦ B ≦ 2.0,100 ≦ T ≦ 180 or, 2.0 ≦ B ≦ 2.9,100 + 55.56 × (B-2.0) ≦ T ≦ 180 meet the.