Colloidal templating for producing hollow ZnO shells: Fabrication, growth and electrical properties

被引：7
作者：
Moon, Jaehyun [1 ]
Park, Jin-Ah [1 ]
Lee, Su-Jae [1 ]
Zyung, Taehyoung [1 ]
机构：
[1] Elect & Telecommun Res Inst, Convergence Components & Mat Res Lab, Taejon 305700, South Korea
来源：
THIN SOLID FILMS | 2009年 / 517卷 / 14期
关键词：
ZnO; Colloidal templating; Pulsed laser deposition; Radial distribution function; Electrical properties; Grain boundary; PULSED-LASER DEPOSITION; OXIDE THIN-FILMS; GRAIN-BOUNDARIES; ORIENTATION; PARTICLES; CRYSTALS; TEXTURE; ARRAYS; ORDER; MODEL;
D O I：
10.1016/j.tsf.2009.01.121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Colloidal templating and pulsed laser deposition (PLD) have been combined to fabricate arrays of ordered two-dimensional hollow ZnO shells. Templates were formed by spin-coating colloidal solutions containing monodispersed polymethylmethacrylate (PMMA) beads. The optimum condition for forming templates of ordered two-dimensional geometry was deduced by calculating the radial distribution functions. On templates ZnO films were deposited by a PLD method. Upon annealing ZnO films crystallize into a wurtzite structure. The surface morphology of hollow ZnO shells consists of protruding columnar nano-crystallites with no distinct ZnO texture. The electrical properties were measured as a function of annealing temperature. The electrical conductivity increases with increase in annealing temperature. The activation energy was estimated to be 0.7 eV. The change in the electrical properties upon grain growth has been attributed to alteration in the fraction site availability for defect formation at the grain boundaries. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3904 / 3907
页数：4
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