کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1808302 | 1525152 | 2016 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of deep native defects on ultrasound propagation in TlInS2 layered crystal Effect of deep native defects on ultrasound propagation in TlInS2 layered crystal](/preview/png/1808302.png)
We have investigated p-type semiconductor–ferroelectric TlInS2 by means of Photo-Induced Current Transient Spectroscopy (PICTS) technique in the temperature range 77–350 K for the detection of native deep defect levels in TlInS2. Five native deep defect levels were detected and their energy levels and capture cross sections were evaluated. Focusing on these data, the influence of these defects on the longitudinal and transverse ultrasound waves propagation as well as the effect of electric field on ultrasound waves were studied at different temperatures. The acoustic properties were investigated by the pulse-echo method. The direct contribution of thermally activated charged defects to the acoustic properties of TlInS2 was demonstrated. The key role of charged native deep level defects in elastic properties of TlInS2 was shown.
Journal: Physica B: Condensed Matter - Volume 497, 15 September 2016, Pages 86–92