Preparation of TiO2 nanotube/nanoparticle composite particles and their applications in dye-sensitized solar cells

作者：Lee Chang Hyo; Rhee Seung Woo; Choi Hyung Wook^*

来源：Nanoscale Research Letters, 2012, 7(1): 48.

DOI：10.1186/1556-276X-7-48

• composites
• chemical synthesis
• X-ray diffraction
• electron microscopy
• optical properties

Efficiency of dye-sensitized solar cells [DSSCs] was enhanced by combining the use of TiO2 nanotubes [TNTs] and nanoparticles. TNTs were fabricated by a sol-gel method, and TiO2 powders were produced through an alkali hydrothermal transformation. DSSCs were constructed using TNTs and TiO2 nanoparticles at various weight percentages. TNTs and TiO2 nanoparticles were coated onto FTO glass by the screen printing method. The DSSCs were fabricated using ruthenium(II) (N-719) and electrolyte (I-3/I-3 (-)) dyes. The crystalline structure and morphology were characterized by X-ray diffraction and using a scanning electron microscope. The absorption spectra were measured using an UV-Vis spectrometer. The incident photocurrent conversion efficiency was measured using a solar simulator (100 mW/cm(2)). The DSSCs based on TNT/TiO2 nanoparticle hybrids showed better photovoltaic performance than cells made purely of TiO2 nanoparticles.

• 出版日期2012-1-5