title: A new ladder-type benzodi(cyclopentadithiophene)-based donor-acceptor polymer and a modified hole-collecting PEDOT:PSS layer to achieve tandem solar cells with an open-circuit voltage of 1.62 V.
abstract: We have developed a new ladder-type conjugated polymer and a robust interconnecting layer (ICL) integrating a hole-collecting m-PEDOT:PSS layer with an electron-collecting ZnO layer. The inverted device using exhibited a high power conversion efficiency (PCE) of 5.76% with a Voc of 0.81 V, a Jsc of 12.82 mA cm(-2), and a FF of 55.5%. The inverted tandem device incorporating the and ICL achieves a Voc of 1.62 V leading to a PCE of 7.08%.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hseuh Road, Hsin-Chu, 30010, Taiwan.
authors.forename: Yung-Lung
authors.initials: YL
authors.lastname: Chen
authors.forename: Wei-Shun
authors.initials: WS
authors.lastname: Kao
authors.forename: Che-En
authors.initials: CE
authors.lastname: Tsai
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Lai
authors.forename: Yen-Ju
authors.initials: YJ
authors.lastname: Cheng
authors.forename: Chain-Shu
authors.initials: CS
authors.lastname: Hsu