Growth of TiO2 nanofibers on FTO substrates and their application in dye-sensitized solar cells

8th International Conference on Physics and its Applications

Suryana, R.^1 ; Rahmawati, L.R.^1 ; Triyana, K.^2

Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Indonesia^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Indonesia^2

关键词: Electrospinning method;    Fluorine doped tin oxide;    IV characterization;    Optimum thickness;    Polyvinyl pyrrolidone;    TiO2 nanofibers;    Titanium tetraisopropoxide;    X-ray diffraction spectrum;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/776/1/012006/pdf
DOI  :  10.1088/1742-6596/776/1/012006

来源: IOP

【 摘 要 】

Growth of TiO2nanofibers on fluorine-doped tin oxide (FTO) substrates have been performed using electrospinning method. Homogenous TiO2solution as nanofibers material was prepared with titanium tetraisopropoxide (TTIP), ethanol, acetic acid and polyvinyl pyrrolidone (PVP) which was stirred for 24 h. TiO2solution was loaded into the syringe pump. Electrospun voltage was operated under 15 kV with optimum distance between syringe tip and collector was 15 cm. FTO substrates were attached on the collector surface. Electrospinning coating time was varied at 15 min, 30 min, 45 min, and 60 min. Then TiO2nanofibers layer was annealed at temperature of 450° C for 3 h. X-ray diffraction spectrum of TiO2nanofibers showed major anatase peaks at 25.3°, 48.0° and 37.8° correlating crystal orientation of (101), (200), and (004), respectively while only one rutile peak at 27.5°(110). TiO2nanofibers diameter was measured using atomic force microscopy (AFM). TiO2nanofibers have diameter in range of 100-1000 nm. The obtained-TiO2nanofibers were applied in dye-sensitized solar cell (DSSC) with beta-carotene as dye, carbon as catalyst, and I-/I3-redox couple as electrolyte. DSSC performance was analyzed from I-V characterization. Growth of TiO2nanofibers at electrospinning time for 45 min has highest efficiency that is 0.016%. It is considered that TiO2nanofibers at electrospinning time for 45 min can produce optimum thickness so that it is speculated many dyes adsorb on the nanofiber surfaces and many electrons diffuse toward the electrodes.