title: Ruthenium based nanostructures driven by morphological controls as efficient counter electrodes for dye-sensitized solar cells.
abstract: We introduce a facile approach to use ruthenium dioxide (RuO2) and ruthenium (Ru) nanostructures as effective counter electrodes instead of using platinum (Pt) for dye-sensitized solar cells (DSSCs). RuO2 and Ru nanostructure layers on the FTO glass can be readily prepared by a simple annealing process followed by the spin coating process of the mixture solution containing amorphous RuO2·xH2O precursor and poly(ethylene oxide) (PEO) as a dispersion matrix at low temperature in air. The Ru metal nanostructure layer prepared by the reduction of RuO2 with H2 shows the highest efficiency of 6.77% in DSSC operation, which is comparable to the efficiency of the Pt electrode (7.87%).
authors.affiliation: Department of Chemistry & Nano Science, Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea. myungkim@ewha.ac.kr kimkk@ewha.ac.kr.
authors.forename: Jeesoo
authors.initials: J
authors.lastname: Seok
authors.forename: Ka Yeon
authors.initials: KY
authors.lastname: Ryu
authors.forename: Jin Ah
authors.initials: JA
authors.lastname: Lee
authors.forename: Inyoung
authors.initials: I
authors.lastname: Jeong
authors.forename: Nam-Suk
authors.initials: NS
authors.lastname: Lee
authors.forename: Jeong Min
authors.initials: JM
authors.lastname: Baik
authors.forename: Joo Gon
authors.initials: JG
authors.lastname: Kim
authors.forename: Min Jae
authors.initials: MJ
authors.lastname: Ko
authors.forename: Kyungkon
authors.initials: K
authors.lastname: Kim
authors.forename: Myung Hwa
authors.initials: MH
authors.lastname: Kim