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Thermally stimulated currents in α-HgI2 polycrystalline films

Yue-Tsang Shiu1, Tang-Jung Huang1, Chen-Tsung Shih1, Chih-Feng Su1, San-Min Lan2 and Kuan-Cheng Chiu1,3

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A study of thermally stimulated currents (TSC) is applied to α-HgI2 polycrystalline films grown by physical vapour deposition with various thermal boundary conditions. Five TSC peaks are clearly observed and numerically fitted. The activation energy and the density of the trapping centre that corresponds to each TSC peak are then calculated. Finally, the effects of the deposition conditions on the TSC results are discussed.


PACS

73.50.Gr Charge carriers: generation, recombination, lifetime, trapping, mean free paths

68.37.Hk Scanning electron microscopy (SEM) (including EBIC)

81.15.Ef Vacuum deposition

Subjects

Surfaces, interfaces and thin films

Dates

Issue 7 (7 April 2007)

Received 9 December 2006, in final form 14 February 2007

Published 16 March 2007



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