Texture, Stress, and Microstructure

Texture, Stress, and Microstructure / 2009 / Article

Research Article | Open Access

Volume 2009 |Article ID 494537 | 7 pages | https://doi.org/10.1155/2009/494537

The Influence of Deposition Conditions on Structural Properties of PbI2

Academic Editor: Hahn Choo
Received17 Jul 2009
Revised11 Nov 2009
Accepted24 Nov 2009
Published01 Mar 2010

Abstract

The effect of deposition environment conditions on the electrical and structural properties of deposited PbI2 layers were studied. The layers were deposited from solution under dark and room light illumination with and without applying magnetic field. XRD, electrical, and photo-electrical properties were measured at room temperature. An increase in the grain size versus the platelet area was noticed.The electrical properties revealed a dependence on deposition conditions. Dark conductivity increases from 1.7×1010 to 5×109 (Ωcm)-1 when deposition was carried out in darkness. A gain factor (the ratio between photoconductivity and dark conductivity) of (23) was obtained. The results indicate that the increase in electrical conductivity is mainly due to the plane 001, where the average number of grain boundaries in this plane sharply decreases when deposition takes place in darkness. On the other hand, the increase in photoconductivity could be due to the decrease in the recombination of free carriers along the grain boundaries.

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Copyright © 2009 Ali M. Mousa and Natheer J. Al-rubaie. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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