title: Characterization of photoelectric properties and composition effect of TiO(2)/ZnO/Fe(2)O(3) composite by combinatorial methodology.
abstract: On the basis of combinatorial methodology and the idea of an equilateral ingredient triangle, the TiO(2)/ZnO/Fe(2)O(3) composite system including 66 ingredient points was designed. The photocurrents under different light sources and bias voltages were measured, and the photocurrent amplitude at 300 s was chosen as a parameter to evaluate the photoelectric response of the composite. To appraise the composition effect of the composite compared with pure materials, the quantitative formula of the composition effect has been provided for the first time in this paper. We found that not all the ingredient points demonstrated the enhanced composition effect in the as-designed ingredient triangle material library. The reasons of different composition effect for different ingredient points have been discussed in detail. X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) were used to investigate the phase structure and the grain morphology of the composite.
authors.affiliation: State Key Laboratory of Material Processing and Die & Mold Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
authors.forename: Yichuan
authors.initials: Y
authors.lastname: Liao
authors.forename: Huayao
authors.initials: H
authors.lastname: Li
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Zou
authors.forename: Dawen
authors.initials: D
authors.lastname: Zeng
authors.forename: Changsheng
authors.initials: C
authors.lastname: Xie
mesh_terms: D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D005290:Ferric Compounds / Q000737:chemistry*; D008027:Light; D008855:Microscopy, Electron, Scanning; D055668:Photochemical Processes; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; C009495:titanium dioxide; C000499:ferric oxide; D014025:Titanium; D015034:Zinc Oxide