Optimisation of pocket doped junctionless TFET and its application in digital inverter

Micro & nano letters

article

Wangkheirakpam Vandana Devi¹  Brinda Bhowmick¹ 

[1] Department of Electronics and Communication, National Institute of Technology

关键词: tunnel transistors;    work function;    tunnelling;    field effect transistors;    Ge-Si alloys;    semiconductor materials;    invertors;    optimisation;    pocket doped junctionless tunnel field-effect transistor;    digital inverter application;    junctionless technique;    N+–N+–N+ structure;    dual gate;    fixed gate voltage;    flat band voltage;    gate-oxide thickness;    work-function variations;    gate metals;    drain current;    conventional JL-TFET;    high-frequency application;    tunnelling path;    pocket doped junctionless TFET optimization;    N+ pocket;    P–I–N structure;    subthreshold swing;    control gate work-function;    transconductance;    cut-off frequency;    total gate capacitance;    voltage transfer characteristics;    inverter circuit;    analogue-radio frequency analysis;    electron volt energy 5.0 eV;    electron volt energy 4.5 eV;    SiGe;   

DOI  :  10.1049/mnl.2018.5086

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

This study detects the presence of the most important steroidal sapogenin “Tigogenin” in the leaves of Yucca aloifolia widely cultivated in Iraq. The absence of any study concerning the Tigogenin content of this medicinal plant in Iraq, and the industrial importance of Tigogenin depending on its role as a precursor in the synthesis of some steroidal drugs, acquired this study its value. This study concerned with extraction, identification, isolation, and purification of Tigogenin from the leaves of Yucca aloifolia. Extraction of this compound was carried out using two methods. Identification of this compound was done using thin layer chromatography (TLC) where different solvent systems had been tried. Libermann – Burchard reagent was used for detection. This identification was further augmented by using high performance liquid chromatography (HPLC) and then this steroidal saponin was isolated and purified. The identification of isolated Tigogenin was carried out using melting point (M.P.), Thin layer chromatography (TLC), infrared spectroscopy (IR) and High performance liquid chromatography (HPLC) . This study confirms the presence of Tigogenin in the leaves of Yucca aloifolia cultivated in Iraq. Also the result of this study showed that the second extraction method was the best, because the amount of both extract and Tigogenin were higher than one extraction method.

【 授权许可】

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