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Information Journal Paper

Title

Simulation of IR Detector at Communications Window of 1550nm based on Graphene

Pages

  71-77

Abstract

 In this paper, photodetection properties of a Graphene-based device at the third telecommunication window have been reported. The structure of the device is a Graphene-silicon Schottky junction which has been simulated in the form of an infrared photodetector. Graphene has specific electrical and optical properties which makes this material a good candidate for optoelectronic applications. Photodetection characteristic of Graphene-silicon Schottky junction is investigated by measuring the (current-voltage) curve at the third telecommunication window under 1550nm radiations. The DC electrical characteristic of the device is calculated. The simulated rectifier junction has a potential barrier of 0. 31eV, the ideality factor of 2. 7 and the saturation current of 10-11A. The detector responsivity under 1550nm radiations is measured about 20mA/W which is an order of magnitude larger than other Si-based detectors in this wavelength. The internal quantum efficiency (QEin) is calculated about 60% while the external quantum efficiency (QEex) is measured to be 1. 6%. A comprehensive theoretical justification is presented based on Fowler theory which allows comparison between the simulation results and the theoretical predictions. For simulating Graphene, a user-defined material is introduced to TCAD-SILVACO software which includes all electrical and optical properties of this novel 2D material. Graphene optical properties, specifically at near-IR region (up to 2um wavelength), have been extracted from the real measurement results. Graphene is a Si-compatible material which can provide a sensitive IR detector integrated with other Si-based devices.

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    APA: Copy

    Sotoudeh, Abolfazl, RAJABI, ALI, & Amirmazlaghani, Mina. (2017). Simulation of IR Detector at Communications Window of 1550nm based on Graphene. JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING INNOVATIONS, 5(1), 71-77. SID. https://sid.ir/paper/350049/en

    Vancouver: Copy

    Sotoudeh Abolfazl, RAJABI ALI, Amirmazlaghani Mina. Simulation of IR Detector at Communications Window of 1550nm based on Graphene. JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING INNOVATIONS[Internet]. 2017;5(1):71-77. Available from: https://sid.ir/paper/350049/en

    IEEE: Copy

    Abolfazl Sotoudeh, ALI RAJABI, and Mina Amirmazlaghani, “Simulation of IR Detector at Communications Window of 1550nm based on Graphene,” JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING INNOVATIONS, vol. 5, no. 1, pp. 71–77, 2017, [Online]. Available: https://sid.ir/paper/350049/en

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