METHOD FOR FORMING ORGANIC SEMICONDUCTOR THIN FILM BY SELF-FORMING TWO-LAYER SEPARATION, ORGANIC SEMICONDUCTOR THIN FILM, AND ORGANIC SEMICONDUCTOR DEVICE

摘要

PROBLEM TO BE SOLVED: To form an organic semiconductor thin film with almost no influence of impurities arising therein from a low-purity organic semiconductor containing lots of impurities including a byproduct resulting from synthesis.SOLUTION: The method for forming an organic semiconductor thin film on an insulating polymer layer by spin-coating (i.e. self-forming two-layer separation) comprises: spin-coating a substrate with a liquid solution including a low-purity organic semiconductor and an insulating polymer. The organic semiconductor thin film formed in this way has an electric property equivalent to that of an organic semiconductor thin film formed by use of a high-purity organic semiconductor. Therefore, it is possible to produce an organic semiconductor device at low cost without a purification process of organic semiconductor.