3 research outputs found

    2D-modeling for the simulation of current-voltage characteristics in polysilicon schottky diode deposited by LPCVD and SAPCVD methods

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    Link to publisher's homepage at http://www.unimap.edu.my/ ; Open access only applicable for vol. 1 ; issue 1, 2008 & vol. 2 ; issue 1, 2009.The aim of this work is to compare the quality of the Schottky contact obtained between Silver and the un-doped polysilicon layer deposited on glass substrate (Corning 1737) by using two techniques: Lower Pressure Chemical Vapor deposition LPCVD (LPCVD sample) and Sub Atmospheric Pressure Chemical Vapor Deposition SAPCVD (SAPCVD sample). A non ideal measured foward bias I-V characteristic has been observed. The elctrical parameters are evaluated such as ideality factor (4.94 and 6.46), barrier height (0.57 eV and 0.50 eV), saturation current (6.74x10ˉ³ mA and 2.14x10ˉ² mA) and series resistance (960Ω and 2300Ω), respectively on LPCVD and SAPCVD samples. Two-dimensional (2D) model of I-V characteristics taking into account the localization of traps states in the grain boundaries is developed. We are also considered the U-distribution of traps states in the band gap. A good adjustment is obtained between measurement and simulation of I-V characteristics and gives the energetic traps states distribution. The comparison of the performance of the two polysilicon layer deposition techniques has been analyzed and discussed. The experimental current curves are well fitted by this model which gives the energetic traps states distribution in the band gap. A good quality polycrystalline can be obtained using LPCVD technique but it is possible to deposit films with SAPCVD technique which it may be interesting candidate for the fabrication of solar cell

    Abstracts of 1st International Conference on Computational & Applied Physics

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    This book contains the abstracts of the papers presented at the International Conference on Computational & Applied Physics (ICCAP’2021) Organized by the Surfaces, Interfaces and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria, held on 26–28 September 2021. The Conference had a variety of Plenary Lectures, Oral sessions, and E-Poster Presentations. Conference Title: 1st International Conference on Computational & Applied PhysicsConference Acronym: ICCAP’2021Conference Date: 26–28 September 2021Conference Location: Online (Virtual Conference)Conference Organizer: Surfaces, Interfaces, and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria
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