title: A novel BiOCl film with flowerlike hierarchical structures and its optical properties.
abstract: A novel BiOCl film with flowerlike hierarchical structures has been fabricated for the first time by dipping Bi film in a mixed solution of H(2)O(2) and HCl. This method presents the advantages of a simple technique, template-free, uniform and controllable morphology, as well as easy mass production. Each flowerlike hierarchical structure is composed of several dozen ultra-thin single-crystal nanopetals which grow along the 110 directions in the tetragonal structure. The layered growth of nanopetals is related to the more marked anion polarization along the c axis and layered stacking of various atoms (Cl-Bi-O-Bi-Cl). The growth mechanism of the BiOCl hierarchical structure is preferred to be a nucleation-dissolution-recrystallization process. A Raman shift originating from laser-induced compressive stress is observed. Photoluminescence (PL) spectra of the BiOCl film show principal green emission, indicating potential applications in optoelectronic devices.
authors.affiliation: National Center for Nanoscience and Technology, China No. 11, Beiyitiao, Zhongguancun, Beijing 100190, People's Republic of China.
authors.forename: Sihai
authors.initials: S
authors.lastname: Cao
authors.forename: Chuanfei
authors.initials: C
authors.lastname: Guo
authors.forename: Ying
authors.initials: Y
authors.lastname: Lv
authors.forename: Yanjun
authors.initials: Y
authors.lastname: Guo
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D006851:Hydrochloric Acid / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: C044685:bismuth oxychloride; D006861:Hydrogen Peroxide; D006851:Hydrochloric Acid; D001729:Bismuth