<p>Disclosed is a radiation detector that is highly sensitive to radiation due to the weight reduction of a substrate for deposition. Also disclosed is a method of producing the radiation detector. The substrate for deposition (104) comprises a plurality of substrates (100, 60) that are laminated via an adhesion layer (102). The radiation detector comprises: a scintillator layer (36) that is deposited on the substrate for deposition (104), and that converts incident radiation into light; and a TFT substrate (30) that is pasted to the scintillator layer (36), and that converts the light emitted from the scintillator layer (36) into a charge. By removing the outside substrate (100) from the inside substrate (60) among the abovementioned plurality of substrates, the weight of the substrate for deposition (104) is reduced.</p>
