Synthesis of TiO2 NRs - ZnO Composite for Dye Sensitized Solar Cell Photoanodes

International Conference on Green and Renewable Energy Resources 2016

能源学;生态环境科学

Wahyuningsih, S.^1 ; Ramelan, A.H.^2 ; Hidayat, R.^1 ; Fadillah, G.^1 ; Munawaroh, H.^1 ; Saputri, L.N.M.Z.^1

Inorganic Material Research Group, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Ir. Sutami street 36A, Kentingan Surakarta, Indonesia^1

Electronic Materials and Energy, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Ir. Sutami street 36A, Kentingan Surakarta, Indonesia^2

关键词: Ball milling process;    Optimum conditions;    Photoanode materials;    Photovoltaic materials;    Resulting materials;    Solar cell efficiencies;    Structural transformation;    Surface area analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/75/1/012006/pdf
DOI  :  10.1088/1755-1315/75/1/012006

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Composite of TiO2NRs - ZnO were synthesized for DSSCs photoanode materials. TiO2NRs was synthesized from TiO2anatase by mechanochemical technique using ball milling process with agitation speed of 1000 rpm. While, the further hydrothermal refluxing process was conducted at 120°C under various concentration of NaOH in aqueous solution. The starting material of ZnO was prepared from ZnSO4.7H2O as a precursor. The hydrothermal treated TiO2was added to the ZnO powder in a certain composition of 1:1, 1:2 and 2:1 (w/w), and the mixtures were then annealed at 400°C. The resulting material was characterized by X-ray diffraction (XRD), Surface area analyzer (SAA), Transmission electron microscopy (TEM), and Thermogravimetry/Differential thermal analysis (TG/DTA). The TiO2revolution occurs from anatase phase into brookite phase. Rutile TiO2phase was increasing when the NaOH was added at about 12 M. Nanograf of TEM showed the optimum condition for the formation of TiO2NRs was obtained when 12 M NaOH was used. Structural transformation to 1D nanorods of TiO2capable increase surface area up to 79 m2/g. TiO2NRs-ZnO composite was prepared from TiO2NRs and ZnO using comparation of TiO2NRs: ZnO = 1:1, 1:2, dan 2:1. Anatase phase TiO2as a single phase TiO2was obtained in the TiO2-ZnO composite (1:1 w/w) upon heating the sample until 400°C. Difference TiO2NRs-ZnO composite materials were investigated as good photovoltaic materials. Evaluation of the performance of DSSCs was conducted by I-V Keithley 2602A measurement indicate that photoanode built of TiO2NRs - ZnO thin film has a higher solar cell efficiency than that of TiO2thin film photoanode.