Advanced Electronics and Optoelectronics Based on 2D Materials and vdW Heterostructures

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (15 August 2023) | Viewed by 1850

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Guest Editor
College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China
Interests: 2D materials; field effect transistors; smart sensors; low frequency noise; ISFETs; memory devices; nanostructured materials
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Special Issue Information

Dear Colleagues,

Two-dimensional (2D) materials have created a new paradigm in atomic-scale devices. Numerous applications such as logic devices and advanced optoelectronics have been extensively explored in relation to 2D materials owing to their compelling properties, including atomically thin thicknesses, dangling bond-free surfaces, and appropriate band gaps, etc. Moreover, the weak vdW interaction between the layers means that 2D materials can be easily exfoliated, and offers great flexibility to stack a wide variety of 2D materials to construct artificial vdW heterostructures without the constraint of atomically precise commensurability. These 2D vdW heterostructures have emerged as promising way of further engineering the electronic and optoelectronic properties of 2D materials, showing great promise for a variety of novel functional devices, including advanced transistors, multilevel inverters, memory devices, photodetectors, photovoltaics, etc. Motivated by the rapid progresses in 2D materials, this Special Issue highlights the material preparation, property modulation, device design, and their device explorations towards advanced electronics and optoelectronics.

Dr. Wugang Liao
Guest Editor

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Keywords

  • field-effect transistors
  • 2D materials
  • vdW heterostructures
  • memory devices
  • photodetectors
  • photovoltaics
  • sensors

Published Papers (1 paper)

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Research

10 pages, 8297 KiB  
Communication
One-Step, In Situ Hydrothermal Fabrication of Cobalt-Doped ZnO/CdS Nanosheets for Optoelectronic Applications
by Lakshmiprasad Maddi, Khidhirbrahmendra Vinukonda, Thirumala Rao Gurugubelli and Ravindranadh Koutavarapu
Electronics 2023, 12(5), 1245; https://doi.org/10.3390/electronics12051245 - 05 Mar 2023
Cited by 2 | Viewed by 1211
Abstract
An in-situ hydrothermal process was used to create Co-doped ZnO/CdS nanosheets in order to examine the effects of the divalent impurity (Co) ions on the structural, morphological, optical, and magnetic characteristics of the test material. For both ZnO and CdS, XRD verified the [...] Read more.
An in-situ hydrothermal process was used to create Co-doped ZnO/CdS nanosheets in order to examine the effects of the divalent impurity (Co) ions on the structural, morphological, optical, and magnetic characteristics of the test material. For both ZnO and CdS, XRD verified the development of a hexagonal wurtzite structure. SEM, TEM, and HR-TEM studies produced sheet-like morphology. Elemental mapping and XPS examination verified the presence of essential elements (S, Cd, O, Co, and Zn). Co-doping dramatically increased the nanosheets’ ability to absorb light in the visible area. Comparing the bandgap energy to pure ZnO and ZnO/CdS nanocomposites, the bandgap energy (2.59 eV) was well-regulated. The PL spectrum at 577 nm showed a prominent yellow emission band that was attributed to the 4A2g(F) → 4T1g(F) transition. Improvement in the room temperature ferromagnetic properties was observed due to doping of Co2+ ions. Warm white light harvesting was confirmed by the estimated CCT value (3540 K). The test material appears to be suitable for the creation of next-generation optoelectronic devices. Full article
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