Effect of hydrothermal synthesis duration on the properties oftransparent conductive coatings based on zinc oxide
AbstractThe parameters of the hydrothermal synthesis to obtain a ordered growth of layers containing nanorods arrays, and solid homogeneous films of boron (BZO) or aluminium (AZO) doped zinc oxide were determed. The morphology, optical, electrical and photoluminescent properties of thin films based on zinc oxide, synthesized by low cost hydrothermal method, in dependence on conditions of hydrothermal route and subsequent thermal treatments were investigated. Research results showed that obtained samples are continuous films of closely packed rods, fused at the bottom with the hexagonal structure, oriented perpendicular to the growth surface. The electrical characteristics, such as concentration, mobility and resistivity of these samples were investigated by Hall effect measurement van der Pauw configuration contacts. Heat treatment in a vacuum at a temperature of 450 °C for 1 hour improved the conductivity of the synthesized thin films.
2 Ko H.-J., Hong S.-K., Chen Y., Yao T. A challenge in molecular beam epitaxy of ZnO: control of material properties by interface engineering. // Thin Solid Films. − 2002. − Vol. 409. − P. 153−160.
3 Yao B.D., Chan V.F., Wang N. Formation of ZnO nanostructures by a simple way of thermal evaporation. // Appl. Phys. Lett. − 2002. − Vol. 81, Issue 4. − P.757−759.
4 Жерихин A.Н., Худобенко A.И., Вилльямс Р.Т., Вилкинсон Д., Усер К.Б., Хионг Г., Воронов В.В. Лaзерное нaпыление пленок ZnO нa кремниевые и сaпфировые подложки. // Квaнт. Электроникa. −2003. − Т. 33, В. 11. −С. 975–980.
5 Jeong S.-H., Kim B.-S. and Lee B.-T. Photoluminescence dependence of ZnO films grown on Si(100) by radio-frequency magnetron sputtering on the growth ambient. // Appl. Phys. Lett. −2003. − Vol.82, Issue 16. − P. 2625 − 2627.
6 Hu X., Masuda Y., Ohji T., Kato K. Effects of polyethylenimine on morphology and property of ZnO films grown in aque¬ous solutions.// Applied Surface Science. –2009. –Vol. 255. – P. 6823–6826.