Anatase TiO(2) nanosheets with exposed (001) facets: improved photoelectric conversion efficiency in dye-sensitized solar cells.
Dye-sensitized solar cells (DSSCs) are fabricated based on anatase TiO(2) nanosheets (TiO(2)-NSs) with exposed {001} facets, which were obtained by a simple one-pot hydrothermal route using HF as a morphology controlling agent and Ti(OC(4)H(9))(4) as precursor. The prepared samples were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis absorption spectroscopy and N(2) adsorption-desorption isotherms. The photoelectric conversion performances of TiO(2)-NSs solar cells are also compared with TiO(2) nanoparticles (TiO(2)-NPs) and commercial-grade Degussa P25 TiO(2) nanoparticle (P25) solar cells at the same film thickness, and their photoelectric conversion efficiencies (η) are 4.56, 4.24 and 3.64%, respectively. The enhanced performance of the TiO(2)-NS solar cell is due to their good crystallization, high pore volume, large particle size and enhanced light scattering. The prepared TiO(2) nanosheet film electrode should also find wide-ranging potential applications in various fields including photocatalysis, catalysis, electrochemistry, separation, purification and so on.
Yu
Jiaguo
J
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China. jiaguoyu@yahoo.com
Fan
Jiajie
J
Lv
Kangle
K
D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D009584:Nitrogen / Q000737:chemistry; D010316:Particle Size; D010777:Photochemistry / Q000379:methods*; D012542:Scattering, Radiation; D012993:Solar Energy; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
D004396:Coloring Agents; C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen