Future prospects of organic solar cells

Abstract

The efficiency of organic solar cells has attained 20%. To achieve 25% efficiency (which is comparable to that of silicon), it is essential to suppress all recombinations, particularly geminate recombination, bimolecular recombination, and trap-assisted recombination. In the long term, exciton-free, highly-efficient photocurrent generation similar to that of inorganic semiconductors may be realized.