Enhanced power conversion efficiency in PCDTBT/PC70BM bulk heterojunction photovoltaic devices with embedded silver nanoparticle clusters - Heeger, Alan J.; Jeon, Ji Hye.; Kim, Jung Kyu.; Park, Jong Hyeok.; Park, Keum Hwan.; Park, O Ok.; Seifter, Jason.; Seo, Jung Hwa.; Wang, Dong Hwan.