Ultraviolet sensing by al-doped ZnO thin films

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report the fabrication and characterization of an ultraviolet photoconductive sensing by using Al-doped ZnO films. Undoped ZnO, 1 at.% and 2 at% of Al were prepared on quartz glass by sol gel method with annealing temperature of 500°C for 1 hour. The presence of spherical shaped nanoparticles were detected for undoped ZnO by using FESEM. The absorption edge shifted to a lower wavelength by doping with Al and excitonic peak can be observed. The band gap values increased by adding Al. I-V curves reveal an ohmic line and improvement in electrical conductivity when the samples are illuminated by ultraviolet (UV) light with a wavelength of 365 nm. At 1 at.% of Al, the film have a larger increment in photocurrent response when illuminated with UV light compared to undoped ZnO and 2 at.% Al. The thin films have a longer recovery time than response time.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages154-158
Number of pages5
Volume364
DOIs
Publication statusPublished - 2012
Event2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011 - Selangor
Duration: 4 Jul 20115 Jul 2011

Publication series

NameAdvanced Materials Research
Volume364
ISSN (Print)10226680

Other

Other2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011
CitySelangor
Period4/7/115/7/11

Fingerprint

Thin films
Wavelength
Photocurrents
Sol-gel process
Quartz
Energy gap
Doping (additives)
Annealing
Nanoparticles
Fabrication
Recovery
Glass
Temperature
Ultraviolet Rays
Electric Conductivity

Keywords

  • Al doped zno
  • UV sensing

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Rashid, A. R. A., N V Visvanathan, P. S. M., Arsad, N., & Shaari, S. (2012). Ultraviolet sensing by al-doped ZnO thin films. In Advanced Materials Research (Vol. 364, pp. 154-158). (Advanced Materials Research; Vol. 364). https://doi.org/10.4028/www.scientific.net/AMR.364.154

Ultraviolet sensing by al-doped ZnO thin films. / Rashid, A. R A; N V Visvanathan, P. Susthitha Menon; Arsad, Norhana; Shaari, S.

Advanced Materials Research. Vol. 364 2012. p. 154-158 (Advanced Materials Research; Vol. 364).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rashid, ARA, N V Visvanathan, PSM, Arsad, N & Shaari, S 2012, Ultraviolet sensing by al-doped ZnO thin films. in Advanced Materials Research. vol. 364, Advanced Materials Research, vol. 364, pp. 154-158, 2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011, Selangor, 4/7/11. https://doi.org/10.4028/www.scientific.net/AMR.364.154
Rashid ARA, N V Visvanathan PSM, Arsad N, Shaari S. Ultraviolet sensing by al-doped ZnO thin films. In Advanced Materials Research. Vol. 364. 2012. p. 154-158. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.364.154
Rashid, A. R A ; N V Visvanathan, P. Susthitha Menon ; Arsad, Norhana ; Shaari, S. / Ultraviolet sensing by al-doped ZnO thin films. Advanced Materials Research. Vol. 364 2012. pp. 154-158 (Advanced Materials Research).
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