Comment on 'Roles of donor and acceptor nanodomains in 6% efficient thermally annealed polymer photovoltaics' [Appl. Phys. Lett. 90, 163511 (2007)]

摘要

In a recent letter, Kim et al. report the production of polymer solar cells with a photoactive composite of poly(3-hexyl-thiophene) (P3HT) and 1 -(3-methoxy-carbonyl)propyl-l-phenyl-(6,6)C_(61) (PCBM) claiming power efficiencies in excess of 6% measured under a standard AM1.5g spectrum with an intensity of 100 mW/cm~2. We have serious concerns about the validity of the presented data with regard to the obtained values of the short circuit current density J_(SC) and, hence, the reported power conversion efficiencies.