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Arrays Fabrication And Photoelectrochemical Properties Of Sn-Doped Vertically Oriented Hematite Nanorods For Solar Cells, Chunting Liu, Hongzhou Dong, Qian Zhang, Qiong Sun, Liyan Yu, Lifeng Dong
Arrays Fabrication And Photoelectrochemical Properties Of Sn-Doped Vertically Oriented Hematite Nanorods For Solar Cells, Chunting Liu, Hongzhou Dong, Qian Zhang, Qiong Sun, Liyan Yu, Lifeng Dong
College of Natural and Applied Sciences
We report on the synthesis and characterization of Sn-doped hematite nanorods as well as their implementation as the photoanode for solar cells. Hematite nanorods are prepared on fluorine-doped tin oxide (FTO) substrates by a hydrothermal method, followed by a two-step sintering in air, and Sn-doping is achieved by adding SnCl4 into the mixture solution during the hydrothermal process. In comparison to un-doped hematite, Sn-doped hematite nanorods exhibit a higher array growth density along the direction [110], which indicates that the Sn-doping can facilitate the vertically oriented growth of the hematite nanorod arrays; moreover, the Sn-doping can result in enhanced photocurrent …
Electromechanical Properties Of Freestanding Graphene Functionalized With Tin Oxide (Sno2) Nanoparticles, Lifeng Dong, J. Hansen, P. Xu, M. L. Ackeman, S. D. Barber, J. K. Schoelz, D. Qi, P. M. Thibado
Electromechanical Properties Of Freestanding Graphene Functionalized With Tin Oxide (Sno2) Nanoparticles, Lifeng Dong, J. Hansen, P. Xu, M. L. Ackeman, S. D. Barber, J. K. Schoelz, D. Qi, P. M. Thibado
College of Natural and Applied Sciences
Freestanding graphene membranes were functionalized with SnO2 nanoparticles. A detailed procedure providing uniform coverage and chemical synthesis is presented. Elemental composition was determined using scanning electron microscopy combined with energy dispersive x-ray analysis. A technique called electrostatic-manipulation scanning tunneling microscopy was used to probe the electromechanical properties of functionalized freestanding graphene samples. We found ten times larger movement perpendicular to the plane compared to pristine freestanding graphene and propose a nanoparticle encapsulation model.
Air Flow Technique For Large Scale Dispersion And Alignment Of Carbon Nanotubes On Various Substrates, James Hedberg, Lifeng Dong, Jun Jiao
Air Flow Technique For Large Scale Dispersion And Alignment Of Carbon Nanotubes On Various Substrates, James Hedberg, Lifeng Dong, Jun Jiao
College of Natural and Applied Sciences
Herein we present a method to disperse and align carbon nanotubes on various substrate surfaces. Using the shear forces associated with a rapidly moving fluid, nanoscale objects were positioned in a direction corresponding to the flow vector of the fluid. Dispersion of carbon nanotubes on microaddressable electrodes via the gas flow method creates opportunities for scaling up the production of nanoscale devices. In this letter, we demonstrate the feasibility of the method and the electrical characterization results obtained after the fabrication of carbon nanotube testing structures.