Metal-oxide Nanowires by Thermal Oxidation Reaction Technique

摘要: The metal-oxides are very interesting materials because they possess wide and universal properties including physical chemical properties. For example, exhibit range of electrical property from superconducting, metallic, semiconducting, to insulating (Henrich & Cox, 1994). ranges makes metaloxide suitable for many applications corrosion protection, catalysis, fuel cells, gas sensor, solar field effect transistor, magnetic storage (Henrich, 2001), UV light emitters, detectors, piezoelectric transducers, transparent electronics (Hsueh Hsu, 2008) etc. Recently, nanostructures metal-oxide such as nanowire, nanorod, nanobelt, nanosheet, nanoribbon, nanotube have gained a great attention due their distinctive novel conventional bulk thin film new potential applications. These unique cause by quantum confinement (Manmeet et al., 2006), lower dimensionality (Wang 2008), change density state (Lyu 2002), high surface-to-volume ratio (Wangrat 2009). Nanowires can be regarded one-dimensional (1D) which interest nanodevice design fabrication 2008). As an example nanowires, the focused on zinc oxide (ZnO) copper (CuO). ZnO is n-type semiconductor has been widely studied since 1935 with direct band gap 3.4 eV large exciton binding energy 60 meV at room temperature (Coleman Jagadish, 2006). wurtzite structure, while CuO, p-type narrow 1.2 , monoclinic crystal structure (Raksa CuO synthesized various techniques pulse laser deposition (PLD) (Choopun 2005), vapor (VD) (Hirate thermal evaporation (Jie 2004; Ronning 2004), metal-catalyzed molecular beam epitaxy (MBE) (Wu 2002; Chan 2003; Schubert (CBE) (Bjork 2002) oxidation technique (Wongrat Thermal it simple, cheap technique. Many researchers reported about growth difference conditions temperature, time, catalyst, flow. list nanowires shown in Table 1.