Patent ID: 7695999

Claim:
A method of producing a semiconductor device comprising an organic semiconductor layer, which comprises the steps of: providing a crystallization promoting layer on a substrate; providing an organic semiconductor precursor on the crystallization promoting layer; and applying light energy and thermal energy simultaneously to the organic semiconductor precursor to form a layer comprising an organic semiconductor, wherein the organic semiconductor precursor comprises at least one partial structure represented by the following general formula (4) or (5): wherein R 13 and R 14 each independently represent one selected from the group consisting of an oxygen atom, a sulfur atom and NR 15 ; and R 15 represents one selected from the group consisting of C 1 -C 12 linear or branched alkyl group, alkenyl group, alkoxy group, alkylthio group, alkyl ester group, aryl group, and hydroxyl group; and wherein R 16 represents an oxygen atom or sulfur atom.