Towards graphene-based asymmetric diodes: a density functional tight-binding study

Mohebbi, Elaheh; Pavoni, Eleonora; Pierantoni, Luca; Stipa, Pierluigi; Hemmetter, Andreas; Laudadio, Emiliano; Mencarelli, Davide

doi:10.1039/d3na00603d

Nanoscale Adv.

2024

DOI: 10.1039/d3na00603d

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Towards graphene-based asymmetric diodes: a density functional tight-binding study

Elaheh Mohebbi,

Eleonora Pavoni,

Luca Pierantoni

et al.

Abstract: Self-consistent charge density functional tight-binding (DFTB) calculations have been performed to investigate the electrical properties and transport behavior of asymmetric graphene devices (AGDs).

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Cited by 2 publications

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Quantum Graphene Asymmetric Devices for Harvesting Electromagnetic Energy

Dragoman,

Dinescu,

Aldrigo

et al. 2024

Nanomaterials

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We present here the fabrication at the wafer level and the electrical performance of two types of graphene diodes: ballistic trapezoidal-shaped graphene diodes and lateral tunneling graphene diodes. In the case of the ballistic trapezoidal-shaped graphene diode, we observe a large DC current of 200 µA at a DC bias voltage of ±2 V and a large voltage responsivity of 2000 v/w, while in the case of the lateral tunneling graphene diodes, we obtain a DC current of 1.5 mA at a DC bias voltage of ±2 V, with a voltage responsivity of 3000 v/w. An extended analysis of the defects produced during the fabrication process and their influences on the graphene diode performance is also presented.

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Quantum Graphene Asymmetric Devices for Harvesting Electromagnetic Energy

Dragoman,

Dinescu,

Aldrigo

et al. 2024

Nanomaterials

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Optoelektronik Uygulamalar için Grafen

Köç Bakacak,

Levet

2024

Journal of Marine and Engineering Technology

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ÖZ Grafen ilk izolasyonunun gerçekleştirildiği 2004 yılından beri iki-boyutlu nano materyaller arasında bir yıldız olarak araştırmacıların dikkatini çekmektedir. Özellikle yeni keşfedilen 2D boyutlu materyal ailesi boyutsallıklarına bağlı olarak esneklik özelliğinin oluşumuna olanak sağlamaktadır. Bilinen ilk iki-boyutlu nano materyal olan grafenin sahip olduğu mükemmel termal, elektronik, optik ve mekaniksel özelliklerinin zenginliğinin yanı sıra, eşsiz 2D yapısından dolayı esnek optoelektronik aygıt uygulamalarında sıklıkla tercih edilmektedir. Bu sayede insan arayüzlü cihazlar, robotik cilt, giyilebilir optoelektronik cihazlar, dokunmatik ekranlar, ultra hızı lazerler ve ışık yayan aygıtlar gibi esnek ya da gerilebilir cihazlara duyulan büyük ilginin oluşmasına ve bu alanda yürütülen çalışmaların hız kazanmasına sebep olmaktadır. Bu incelemede, grafen tabanlı optoelektronik aygıtların geliştirilmesindeki son gelişmelere kapsamlı bir genel bakış açısı sunmanın yanı sıra bu alana ilişkin gelecek perspektifleri de tartışılmaktadır.

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Towards graphene-based asymmetric diodes: a density functional tight-binding study

Abstract: Self-consistent charge density functional tight-binding (DFTB) calculations have been performed to investigate the electrical properties and transport behavior of asymmetric graphene devices (AGDs).

Cited by 2 publications

References 61 publications

Quantum Graphene Asymmetric Devices for Harvesting Electromagnetic Energy

Quantum Graphene Asymmetric Devices for Harvesting Electromagnetic Energy

Optoelektronik Uygulamalar için Grafen

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