title: Application of F4TCNQ doped spiro-MeOTAD in high performance solid state dye sensitized solar cells.
abstract: Amid the investigation of solid-state dye-sensitized solar cells (SDSSCs), it was found that the incorporation of F4TCNQ into the solid hole-transporting materials (HTMs) spiro-MeOTAD forms a spiro-MeOTAD/F4TCNQ (strong electron acceptor) polaron charge-transfer complex. Careful examination indicates that the formation of the polaron charge-transfer complex not only facilitates the conductivity of HTMs but also inhibits the charge recombination across the interface of the heterojunction, i.e. photoanode/HTMs and/or counter electrode/HTMs. As a result, the performance of SDSSCs has been markedly improved by using the organic dye A2-F. At AM1.5 illumination the short circuit current densities J(SC) increase from 8.29 mA cm(-2) (w/o F4TCNQ) to 10.95 mA (w/F4TCNQ), accompanied by a 20% increase of the overall power conversion efficiency, η, from 4.55% to 5.44%.
authors: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors: Dong-Yi
authors: DY
authors: Chen
authors: Wei-Hsuan
authors: WH
authors: Tseng
authors: Sheng-Ping
authors: SP
authors: Liang
authors: Chih-I
authors: CI
authors: Wu
authors: Che-Wei
authors: CW
authors: Hsu
authors: Yun
authors: Y
authors: Chi
authors: Wen-Yi
authors: WY
authors: Hung
authors: Pi-Tai
authors: PT
authors: Chou