A photoelectric conversion element (an experimental example 13) was fabricated by a method similar to that in the experimental example 3, except that a photoelectric conversion layer was formed by using two kinds of benzothienobenzothiophene derivatives represented by the formula (1-3) and the formula (1-7) and C60 fullerene (the formula (2) described above).
A photoelectric conversion element (an experimental example 14) was fabricated by a method similar to that in the experimental example 4, except that a photoelectric conversion layer was formed by using two kinds of benzothienobenzothiophene derivatives represented by the formula (1-4) and the formula (1-7) and C60 fullerene (the formula (2) described above).
A photoelectric conversion element (an experimental example 15) was fabricated by a method similar to that in the experimental example 5, except that a photoelectric conversion layer was formed by using two kinds of benzothienobenzothiophene derivatives represented by the formula (1-5) and the formula (1-7) and C60 fullerene (the formula (2) described above).
A photoelectric conversion element (an experimental example 16) was fabricated by a method similar to that in the experimental example 6, except that a photoelectric conversion layer was formed by using two kinds of benzothienobenzothiophene derivatives represented by the formula (1-6) and the formula (1-7) and C60 fullerene (the formula (2) described above).