Future prospects of organic solar cells

Abstract

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