ZnO nanoparticles with controlled shapes and sizes prepared using a simple polyol synthesis

Abstract Nanocrystalline zinc oxide (ZnO) particles with controlled shapes and sizes were prepared at 180 ∘C by a simple polyol method. The amount of water and the method of addition played an important role in determining the characteristics of the synthesized particles. Rod-shaped ZnO particles with major axis lengths of ∼114 nm were obtained by heating the precursor solution, while equiaxial particles with average diameters of ∼24 nm were prepared by injecting water into hot precursor solution. Increasing the amount of water added to the precursor solution enlarged the aspect ratio of the rod-shaped particles and increased the particle size of the equiaxial particles due to enhanced hydrolysis and condensation of the Zn ion complex.

[1]  Robert T. DeHoff,et al.  Thermodynamics in Materials Science , 1993 .

[2]  Jürgen Christen,et al.  Bound exciton and donor–acceptor pair recombinations in ZnO , 2004 .

[3]  C. Feldmann,et al.  Polyol-Mediated Preparation of Nanoscale Oxide Particles. , 2001, Angewandte Chemie.

[4]  Xianchun Liu,et al.  Seed-mediated synthesis of uniform ZnO nanorods in the presence of polyethylene glycol , 2004 .

[5]  T. Lian,et al.  Electron Injection Dynamics from Ru Polypyridyl Complexes to ZnO Nanocrystalline Thin Films , 2003 .

[6]  D. C. Reynolds,et al.  Characterization of homoepitaxial p-type ZnO grown by molecular beam epitaxy , 2002 .

[7]  H. Ohta,et al.  Thin-Film Transistor Fabricated in Single-Crystalline Transparent Oxide Semiconductor , 2003, Science.

[8]  B. Tay,et al.  Growth and characterization of zinc oxide nano/micro-fibers by thermal chemical reactions and vapor transport deposition in air , 2004 .

[9]  S. Ammar,et al.  Metastable solid solutions in the system ZnOCoO: synthesis by hydrolysis in polyol medium and study of the morphological characteristics , 2001 .

[10]  X. Donglin,et al.  Preparation and properties of ZnO-based ceramic films for low-voltage varistors by novel sol-gel process , 2001 .

[11]  David C. Look,et al.  P‐type doping and devices based on ZnO , 2004 .

[12]  Wei Gao,et al.  Zinc oxide films formed by oxidation of zinc under low partial pressure of oxygen , 2003 .

[13]  Z. Yin,et al.  The Synthesis of ZnO Acicular Particles by the Hydrothermal Discharging-gas Method , 1999 .

[14]  H. Ohta,et al.  Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors , 2004, Nature.

[15]  F. Aldinger,et al.  Influence of polyvinyl pyrrolidone on the formation and properties of ZnO thin films in chemical bath deposition , 2006 .

[16]  Sunho Jeong,et al.  Fabrication of a solution-processed thin-film transistor using zinc oxide nanoparticles and zinc acetate , 2007 .

[17]  Henning Sirringhaus,et al.  Solution-processed zinc oxide field-effect transistors based on self-assembly of colloidal nanorods. , 2005, Nano letters.