Organic semiconductor mixed material and organic photovolatic device using the same

An organic semiconductor mixed material comprising:

• at least one electron donor which is an organic polymer, with Formula I:
• Wherein, X is selected from one of C, S, N and O;
• X1 to X4 can be the same or different, and X1 to X4 are selected from one of C, C—F, C—Cl, C—Br and C—I, respectively, Ar and Ar′ can be the same or different, and Ar and Ar′ are respectively selected from one of the following groups:
• C1˜C30 fused ring aromatic hydrocarbons with and without substituents, C1-C30 benzene fused heterocyclic compounds with and without substituents, C1-C30 fused heterocyclic compounds with and without substituents, benzene rings with and without substituents, five-membered heterocycles with and without substituents, and six-membered heterocycles with and without substituents;
• π can be selected from one of the following groups:
• C1˜C30 fused ring aromatic hydrocarbons with and without substituents, C1-C30 benzene fused heterocyclic compounds with and without substituents, C1-C30 fused heterocyclic compounds with and without substituents, benzene rings with and without substituents, five-membered heterocycles with and without substituents, six-membered heterocycles with and without substituents, alkenes and alkynes with and without substituents;
• m, m′, a, n, n′ and b can be the same or different, and m, m′, a, n, n′ and b are integers selected from 0 to 5;
• and the sum of x and y is 1, and x≠0 and y≠0;
• when m, m′, n, and n′=0, X1≠X3 or X2≠X4 when m, m′, n, and n′≠0, Ar≠Ar′;
• a first electron acceptor which is a crystalline material, wherein self-molecule stacking distance of the first electron acceptor is less than 4 Å;
• and
• a second electron acceptor which is a crystal destruction material, wherein the second electron acceptor includes a fullerene derivative.