ORGANIC SEMICONDUCTOR FORMULATIONS

摘要

The present teachings relate to organic semiconductor formulations including an organic semiconducting compound in a liquid medium, where the liquid medium includes (1) a compound in liquid state that has electronic properties complementary to the electronic structure of the organic semiconducting compound and optionally (2) a solvent or solvent mixture for solubilizing the organic semiconducting compound. The present formulations can be used as inks in the fabrication of organic semiconductor devices.

主权项

1. An organic semiconductor formulation comprising a p-type organic semiconducting compound in a liquid medium, wherein the p-type organic semiconducting compound is selected from the group consisting of an oligothiophene, a thienocoronene, and a thienoacene; and the liquid medium consists essentially of a first liquid and optionally a second liquid, the first liquid being an electron-poor liquid comprising an aromatic compound having either (i) at least one electron-withdrawing functional group (FGewd) as a substituent, (ii) an electron-poor aromatic core, or both (i) and (ii), and is in liquid state at about 1 atm at a temperature of 50° C. or less; and the second liquid being selected from the group consisting of petroleum ethers, acetonitrile, benzene, toluene, o-xylene, m-xylene, p-xylene, cyclohexylbenzene, 1-methyl naphthalene, 2-methylnaphthalene, 1-ethyl naphthalene, 2-ethylnapthalene, 1,2,4-trimethylbenzene, mesitylene, tetraline, indane, indene, acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, bis(2-methoxyethyl) ether, diethyl ether, di-isopropyl ether, t-butyl methyl ether, methyl acetate, ethyl acetate, methyl formate, ethyl formate, isopropyl acetate, butyl acetate, cyclopentanone, cyclohexanone, and 2-methypyrrolidone.