Abstract
I-V characteristics of HgI2 crystal wafers with the contacts of sputtered gold (Au/HgI2) and coated chloroauric acid (AuCl3/HgI2) were studied using Agilent4155 CVIV instrument. The results indicate that the fitting data b, representing ohmic contacts proterties, were 0.89 and 1.06, respectively. The resistivity of HgI2 crystal was 109 Ω·cm. The calculated value of contact resistance, 1.6×107Ω for Au/HgI2 and 4.3×106 Ω for AuCl3/HgI2, showed that AuCl3/HgI2 could generate lower contact resistance. Au electrode formed from decomposition of chloroauric acid produces better ohmic contacts comparing with that of sputtering gold. The sputtering process deteriorated the interface quality of HgI2 crystal wafers, resulting worse ohmic contacts properties.
Original language | English |
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Pages (from-to) | 1008-1011 |
Number of pages | 4 |
Journal | Rengong Jingti Xuebao/Journal of Synthetic Crystals |
Volume | 38 |
Issue number | 4 |
State | Published - Aug 2009 |
Keywords
- Au
- AuCl
- Contact properties
- HgI
- I-V Character