Photoluminescence of ZnO layer on commercial glass substrate prepared by sol–gel process

Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films

“…Notably, ZnO possesses a wide direct band-gap energy of 3.37 eV and a larger exciton-binding energy of 60 meV [3], that have been used by several deposition techniques, such as RF magnetron sputtering, molecular beam epitaxy (MBE), metal organic chemical vapor deposition (MOCVD), pulsed laser deposition (PLD) and the sol-gel process [4][5][6][7][8]. Among these methods, the sol-gel method enjoys the advantages of being able to prepare large area ZnO thin films at low cost and easy technology [9]. Therefore, several investigations have prepared UV photodetectors using sol-gel synthesized ZnO thin films [10,11].…”

Structural, optical and electrical properties of ZnO:Al thin films for optoelectronic applications

“…When it is doped, ZnO film presents promising second-order nonlinear optical properties, which achieve the giant nonlinear optical effects about 50 pm/V (Ebothe et al 2007). Many methods have been employed to prepare ZnO thin films like spray pyrolysis (Benny et al 1999), molecular beam epitaxy (Feng et al 2006), chemical vapor deposition (Funakubo et al 1999), RF magnetron sputtering (Lai and Lee 2008) and sol-gel (Hwangbo et al 2008). The latest method has the advantage to give a high surface morphology at lower crystallizing temperature.…”

Effects of the mechanical activation of zinc carbonate hydroxide on the formation and properties of zinc oxides

“…The method of preparation as well as crystalline size and morphology of the particles influence the properties of the final product [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Several methods for the synthesis of ZnO nanoparticles have been reported in the literature: hydrothermal synthesis [13], acid-assisted annealing process [14], co-precipitation [15,16], via H 2 O 2 pre-oxidation [17,18], sol gel [19][20][21], thermal decomposition of zinc carbonate hydroxide [22][23][24][25] and mechanochemical synthesis [26][27][28][29][30][31]. It is well known that the mechanochemical activation generates various types of defects in the structure of materials which lead to a higher reactivity and a reduction of the time needed for the solid state synthesis [32][33][34][35].…”