POLYMER CONTAINING THIOPHENE-BENZENE-THIOPHENE UNIT, PREPARATION METHOD THEREFOR AND SOLAR CELL DEVICE

摘要

A polymer containing thiophene-benzene-thiophene unit has the following formula:
R 1 represents C 1 to C 20 alkyl, R 2 represents C 1 to C 20 alkyl, n is an integer from 10 to 100. An energy gap of the polymer containing thiophene-benzene-thiophene unit is narrow, and therefore the power conversion efficiency is improved greatly. A method of preparing the polymer containing thiophene-benzene-thiophene unit and a sorlar cell device using the polymer containing thiophene-benzene-thiophene unit are also provided.