Ultra violet sensors based on nanostructured ZnO spheres in network of nanowires: a novel approach

  • SS Hullavarad
  • NV Hullavarad
  • PC Karulkar
  • A Luykx
  • P Valdivia
Open Access
Nano Express

Abstract

The ZnO nanostructures consisting of micro spheres in a network of nano wires were synthesized by direct vapor phase method. X-ray Photoelectron Spectroscopy measurements were carried out to understand the chemical nature of the sample. ZnO nanostructures exhibited band edge luminescence at 383 nm. The nanostructure based ZnO thin films were used to fabricate UV sensors. The photoresponse measurements were carried out and the responsivity was measured to be 50 mA W−1. The rise and decay time measurements were also measured.

Keywords

UV Sensor Nano structures Micro-spheres Nanowire network Rise/Decay time Photoresponse Photoluminescence 

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38]

Notes

Acknowledgements

SSH is thankful to Dr. Diane Pugel and Dr. R.D. Vispute for fruitful discussions. Authors would like to acknowledge the support from Defense Micro Electronic Agency (DMEA) at University of Alaska, Fairbanks.

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Copyright information

© to the authors 2007

Authors and Affiliations

  • SS Hullavarad
    • 1
  • NV Hullavarad
    • 1
  • PC Karulkar
    • 1
  • A Luykx
    • 2
  • P Valdivia
    • 2
  1. 1.Office of Electronic MiniaturizationUniversity of Alaska FairbanksFairbanksUSA
  2. 2.Center for Superconductivity ResearchUniversity of MarylandCollege ParkUSA

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