Effect of molarity of TiO2 seeded-template to the growth of ZnO nanostructures

3rd International Conference on Manufacturing, Optimization, Industrial and Material Engineering

Asib, N.A.M.^1,2 ; Afaah, A.N.^1,2 ; Aadila, A.^1,2 ; Mahmud, M.R.^1,2 ; Lim, Y.C.^1 ; Alrokayan, Salman A.H.^4 ; Khan, Haseeb A^4 ; Rusop, M.^1,3 ; Khusaimi, Z.^1,2

Faculty of Applied Sciences, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^1

NANO-SciTech Centre, Institute of Sciences, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^2

NANO-ElecTronic Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^3

Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia^4

关键词: Annealing treatments;    Glass substrates;    Immersion method;    Immersion process;    Nanostructured thin film;    Sol-gel spin coating;    Zinc nitrates;    ZnO nanostructures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/83/1/012006/pdf
DOI  :  10.1088/1757-899X/83/1/012006

来源: IOP

【 摘 要 】

ZnO nanostructures were deposited by solution-immersion method on TiO2layers by sol-gel spin-coating technique. Seven layers of TiO2were coated on glass substrates at different molarities, followed by annealing treatment and solution-immersion process in aqueous solution containing 1:1 ratio of 0.05 M of zinc nitrate hexahydrate (Zn(NO3)2.6H2O) and hexamethylenetetramine (HMTA) (C6H12N4). FESEM images confirmed that ZnO nanostructures grown on TiO2seeded-template are in needle-like shape with smaller tip can be observed. Photoluminescence (PL) spectroscopy showed that as the molarity of TiO2seeded- template increase, the intensity of PL emission at UV region decrease. UV emission peak for 0.10 M and 0.25 M are higher compared to UV emission peak film of 0.50 M and 1.00 M, which are too low. Meanwhile, the UV absorption properties of the nanostructured thin film for 0.25 M of TiO2seeded-template was higher compared to other thin films.