Han, Jeungjo Yoo, Kicheon Ko, Min Jae Yu, Byungkwan Noh, Yunyoung Song, Ohsung 2024-01-20T15:32:32Z 2024-01-20T15:32:32Z 2021-09-04 2012-02 1598-9623 https://pubs.kist.re.kr/handle/201004/129604 A ruthenium (Ru) catalytic layer was assessed as the counter electrode (CE) in dye sensitized solar cells (DSSCs) by examining the effect of the Ru thickness on the DSSC performance. Ru films with different thicknesses (34, 46, 69 and 90 nm) were deposited on glass/fluorine-doped tin oxide (FTO) substrates as the CE by atomic layer deposition (ALD) at 250 degrees C using RuDi as the precursor and O-2 as the reaction gas. Finally, a 0.45 cm(2) DSSC of glass/FTO/TiO2/dye(N719)/electrolyte(C6DMII, GSCN)/Ru CE structure was prepared. The properties of the DSSCs were examined by field emission scanning electron microscopy (FE-SEM), four-point-probe, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), currentvoltage (I-V), incident photon-to-current conversion efficiency (IPCE), and dark current measurements. FE-SEM showed that the crystallized Ru films had been deposited quite uniformly and conformally on the glass/FTO surface. The sheet resistance of the Ru film decreased with increasing Ru thickness. CV profiling revealed an increase in catalytic activity with increasing film thickness. The charge transfer resistance at the interface between the Ru-coated CE and electrolyte decreased with increasing Ru thickness. I-V profiling showed that the energy conversion efficiency was increased up to 3.40 % by increasing the Ru thickness. Moreover, the IPCE and dark current results showed the efficiency of the Ru-coated CE was comparable to that of a conventional platinum (Pt) CE. English KOREAN INST METALS MATERIALS LOW-COST REDUCTION EFFICIENCY PLATINUM FILMS Effect of the Thickness of the Ru-coating on a Counter Electrode on the Performance of a Dye-sensitized Solar Cell Article 10.1007/s12540-012-0013-2 1 METALS AND MATERIALS INTERNATIONAL, v.18, no.1, pp.105 - 108 METALS AND MATERIALS INTERNATIONAL 18 1 105 108 scie scopus kci ART001635982 000301482300013 2-s2.0-84858145151 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article LOW-COST REDUCTION EFFICIENCY PLATINUM FILMS solar cells electrochemistry electrical conductivity deposition scanning electron microscopy (SEM)