Various embodiments provide a method of forming an organic inverter including a first transistor and a second transistor. The method may include providing a substrate with a dielectric layer formed on top of the substrate; depositing a first semiconductor polymer layer on a first region of the dielectric layer; forming a first electrode and a second electrode on the first semiconductor polymer layer, thereby forming the first transistor located at the first region of the dielectric layer; forming a plurality of grooves on a surface of a second region of the dielectric layer; depositing a second semiconductor polymer layer on the second region of the dielectric layer; and forming a first electrode and a second electrode on the second semiconductor polymer layer, thereby forming the second transistor located at the second region of the dielectric layer.