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Article
Structural & Electrical Properties of CdTe/Si Heterojunction Prepared by Flash Evaporation Technique

Authors: Raad, K. Hassan --- Emad, H. Alwan --- Maqadcy, M. B.
Journal: journal of the college of basic education مجلة كلية التربية الاساسية ISSN: 18157467(print) 27068536(online) Year: 2010 Volume: 15 Issue: 63 Pages: 61-68
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The present study is on the optoelectronic properties of CdTe/Si heterojunction photodetector made by deposition of CdTe by flash evaporation technique on clean monocrystalline phase of Si. Electrical and structural properties of grown CdTe film were investigated. The CdTe/Si junction exhibits fair diode rectification and the soft breakdown occurred at VB>2 V. Dark I–V characteristics of the CdTe/Si photodetector are examined at room temperature.

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Article
Improvement of The Level Performance For Interrupt-Driven Kernel in Gigabit Networks

Author: Fadi Hani Kduher Wisam Abd Al-Hussein Raad K. Hassan Samar A. Mahmood Yasameen H. Shamkhi
Journal: journal of the college of basic education مجلة كلية التربية الاساسية ISSN: 18157467(print) 27068536(online) Year: 2011 Volume: 16 Issue: 67 Pages: 87-96
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

In this work presents models and analytical techniques for studying the nature of the doing system of an interrupt-driven kernel due to high packet arrival rate appeared in Gigabit networks. An analytical study is presented describing the effect of high interrupt rate on system performance. The performance is studying in requisites of throughput, latency, and system power. The derived equations of system throughput, latency, system power, and stability condition. The effect of interrupts on system performance had never been denoted to it yet analytically in the past. and this analytical work is the first of its kind. In this work is also using simulation considered both Poisson and bursty traffic with empirical packet size distribution.

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