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TiO 2 Interface Instead of SiO 2 in Terms of Dielectric Coefficient
Brazilian Journal of Physics ( IF 1.6 ) Pub Date : 2021-02-11 , DOI: 10.1007/s13538-020-00831-1
Ahmet Kürşat Bilgili , Mustafa Kemal Öztürk , Süleyman Özçelik , Metin Özer

In this study, Ag/TiO2/n-InP/Au structure is formed by sputtering method and its reverse bias characterisation is made. n type InP semiconductor used in this study is 500 μm thick and has a carrier density of 3.13 × 1018 cm−3. Thickness of TiO2 interface layer is adjusted as 60 Å. Some fundamental properties of the structure are investigated in a wide temperature range (120–360 K). Ln(Ir/Er) vs E0.5 plots are drawn by using reverse bias data. Barrier height and dielectric coefficient of TiO2 interfacial layer are determined. The importance of this study is, it discusses whether TiO2 can be used instead of SiO2 as an interfacial layer in Shottky barrier diodes or not. Also this study proves that dominant current conduction mechanism in Ag/TiO2/n-InP/Au structures can be explained with Frenkel-Poole emission or Schottky emission.



中文翻译:

就介电系数而言,TiO 2界面代替了SiO 2

本研究采用溅射法形成Ag / TiO 2 / n-InP / Au结构,并进行了反向偏压表征。本研究中使用的n型InP半导体的厚度为500μm,载流子密度为3.13×10 18  cm -3。TiO 2界面层的厚度调整为60。在较宽的温度范围(120–360 K)内研究了该结构的一些基本特性。通过使用反向偏置数据绘制Ln(I r / E r)与E 0.5的关系图。确定了TiO 2界面层的势垒高度和介电系数。这项研究的重要性在于,它讨论了TiO是否是否可以在Shottky势垒二极管中使用2代替SiO 2作为界面层。这项研究还证明,可用Frenkel-Poole发射或Schottky发射可以解释Ag / TiO 2 / n-InP / Au结构中的主导电流传导机理。

更新日期:2021-02-12
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