EFFECT OF ANNEALING AND UV ILLUMINATION ON PROPERTIES OF NANOCRYSTALLINE ZNO THIN FILMS

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LAKSHMIPRIYA V.; NATARAJAN B.; JEYAKUMARAN N.; PRITHIVIKUMARAN N.

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Journal Paper

Paper Information

Journal: International Journal of Nano Dimension Year:2014 | Volume:5 | Issue:SPECIAL ISSUE 5 Page(s): 479-487

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Information Journal Paper

Title

EFFECT OF ANNEALING AND UV ILLUMINATION ON PROPERTIES OF NANOCRYSTALLINE ZNO THIN FILMS

Author(s)

LAKSHMIPRIYA V. | NATARAJAN B. | JEYAKUMARAN N. | PRITHIVIKUMARAN N. | Issue Writer Certificate

Keywords

SOL-GEL METHOD

ZNO THIN FILMS

POST ANNEALING

UV-VIS

FTIR

XRD

SEM

RESISTIVITY

UV ILLUMINATION

Abstract

ZnO thin films with preferred orientation along the (002) PLane were prepared onto the glass substrates by the sol-gel spin coating method for different post- annealing temperatures. The XRD study confirms that the thin films grown by this method have good crystalline hexagonal wurtzite structure. The optical band gap of the samples was determined from UV-VISible spectra. It is found that the size of the ZnO grains increase and the optical band gap of the films decrease as the annealing temperature increases from 350oC to 550oC. The transmittance of the film in the visible range was about 75%, 85% and 65% for 350oC, 450oC and 550oC annealed samples respectively. SEM images of the films show worm shaped structures at 350°C and distinct grains in films annealed above 350oC. Photoluminescence spectral study reveals that all the samples exhibit violet luminescence. The RESISTIVITY of the ZnO films found to reduce drastically from mega ohm to ohm range as a result of further vacuum annealing treatment of samples. The variation of electrical RESISTIVITY with respect to intensity of UV ILLUMINATION over the samples has been reported.

Cites

SOL-GEL SPIN COATING DERIVED ZNO THIN FILM TO SENSE THE ACETIC ACID VAPOR

References

STRUCTURE AND MORPHOLOGY OF NANOSTRUCTURED ZINC OXIDE THIN FILMS PREPARED BY DIPVS. SPIN-COATING METHODS

Cite

APA: Copy

LAKSHMIPRIYA, V., NATARAJAN, B., JEYAKUMARAN, N., & PRITHIVIKUMARAN, N.. (2014). EFFECT OF ANNEALING AND UV ILLUMINATION ON PROPERTIES OF NANOCRYSTALLINE ZNO THIN FILMS. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), 5(SPECIAL ISSUE 5), 479-487. SID. https://sid.ir/paper/322250/en

Vancouver: Copy

LAKSHMIPRIYA V., NATARAJAN B., JEYAKUMARAN N., PRITHIVIKUMARAN N.. EFFECT OF ANNEALING AND UV ILLUMINATION ON PROPERTIES OF NANOCRYSTALLINE ZNO THIN FILMS. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND)[Internet]. 2014;5(SPECIAL ISSUE 5):479-487. Available from: https://sid.ir/paper/322250/en

IEEE: Copy

V. LAKSHMIPRIYA, B. NATARAJAN, N. JEYAKUMARAN, and N. PRITHIVIKUMARAN, “EFFECT OF ANNEALING AND UV ILLUMINATION ON PROPERTIES OF NANOCRYSTALLINE ZNO THIN FILMS,” INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), vol. 5, no. SPECIAL ISSUE 5, pp. 479–487, 2014, [Online]. Available: https://sid.ir/paper/322250/en

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