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Preparation and Characterization of Dielectric and Semiconductor Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 4488

Special Issue Editor


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Guest Editor
Department of Electrical Engineering, Hsiuping University of Science and Technology, Dali, Taiwan
Interests: nanomaterials; thin film technology; semiconductor devices; sensors; memory devices

Special Issue Information

Dear Colleagues,

We cordially invite you to submit your research work to our Special Issue “Preparation and Characterization of Dielectric and Semiconductor Materials”. Novel dielectric and semiconductor materials play a very important role in the basic research and application of modern and future nanotechnology. With the demand for high functionality of electronic products and the high speed and high frequency of signal transmission, the number of passive devices and active devices required in the semiconductor manufacturing process has greatly increased.

For the dielectric layer of the transistor gate, high-permittivity materials are currently used to replace traditional silicon dioxide. The main reason for this is that high-permittivity materials can form a thicker dielectric layer, which reduces the leakage current caused by the tunneling effect. The use of low dielectric constant dielectric layer materials in electronic components can effectively solve the RC-delay effect. The high-speed signal transmission of mobile communications relies on high-efficiency transceiver antennas and low-dielectric loss transmission media. The functions and applications of semiconductor materials are very extensive and diverse. Among them, compound semiconductor materials have several key physical characteristics, such as a wide energy gap, high electron mobility, high power density, large penetration voltage, high thermal conductivity, high cut-off frequency, and high melting point, which play an important role in modern electronic device applications.

The aim of this Special Issue is to present the latest materials and experimental research related to the preparation, characterization, and application of dielectric and semiconductor materials. Both research papers and review articles are invited. Original and advanced research results on novel dielectric and semiconductor materials and device characteristics are welcome to be published in this Special Issue.

In particular, the topics of interest include but are not limited to:

  • Nanomaterials;
  • Dielectric materials;
  • Ferroelectric, piezoelectric, and pyroelectric materials;
  • Semiconductor materials;
  • Compound and composite;
  • Low dielectric loss;
  • High-K materials;
  • Active and passive devices;
  • Photoelectric devices.

Prof. Dr. Hone-Zern Chen
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanomaterials
  • semiconductors
  • insulators
  • compound and composite
  • low dielectric loss
  • high-k materials
  • active and passive devices
  • sensors

Published Papers (2 papers)

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Research

22 pages, 7996 KiB  
Article
Monitoring Porcelain Insulator Condition Based on Leakage Current Characteristics
by Ali Ahmed Salem, Kwan Yiew Lau, Mohd Taufiq Ishak, Zulkurnain Abdul-Malek, Samir A. Al-Gailani, Salem Mgammal Al-Ameri, Ammar Mohammed, Abdulaziz Ali Saleh Alashbi and Sherif S. M. Ghoneim
Materials 2022, 15(18), 6370; https://doi.org/10.3390/ma15186370 - 14 Sep 2022
Cited by 5 | Viewed by 1836
Abstract
Insulator monitoring using leakage current characteristics is essential for predicting an insulator’s health. To evaluate the risk of flashover on the porcelain insulator using leakage current, experimental investigation of leakage current indices was carried out. In the first stage of the experiment, the [...] Read more.
Insulator monitoring using leakage current characteristics is essential for predicting an insulator’s health. To evaluate the risk of flashover on the porcelain insulator using leakage current, experimental investigation of leakage current indices was carried out. In the first stage of the experiment, the effect of contamination, insoluble deposit density, wetting rate, and uneven distribution pollution were determined on the porcelain insulator under test. Then, based on the laboratory test results, leakage current information in time and frequency characteristics was extracted and employed as assessment indicators for the insulator’s health. Six indicators, namely, peak current indicator, phase shift indicator, slope indicator, crest factor indicator, total harmonic distortion indicator, and odd harmonics indicator, are introduced in this work. The obtained results indicated that the proposed indicators had a significant role in evaluating the insulator’s health. To evaluate the insulator’s health levels based on the extracted indicator values, this work presents the naïve Bayes technique for the classification and prediction of the insulator’s health. Finally, the confusion matrix for the experimental and prediction results for each indicator was established to determine the appropriateness of each indicator in determining the insulator’s health status. Full article
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14 pages, 5155 KiB  
Article
Influence of Mn, Fe, Co, and Cu Doping on the Photoelectric Properties of 1T HfS2 Crystals
by Der-Yuh Lin, Yu-Tai Shih, Wei-Chan Tseng, Chia-Feng Lin and Hone-Zern Chen
Materials 2022, 15(1), 173; https://doi.org/10.3390/ma15010173 - 27 Dec 2021
Cited by 1 | Viewed by 2306
Abstract
Doping plays a vital role in the application of transition-metal dichalcogenides (TMDCs) because it can increase the functionality of TMDCs by tuning their native characteristics. In this study, the influence of Mn, Fe, Co, and Cu doping on the photoelectric properties of HfS [...] Read more.
Doping plays a vital role in the application of transition-metal dichalcogenides (TMDCs) because it can increase the functionality of TMDCs by tuning their native characteristics. In this study, the influence of Mn, Fe, Co, and Cu doping on the photoelectric properties of HfS2 was investigated. Pristine, Mn-, Fe-, Co-, and Cu-doped HfS2 crystals were grown using the chemical vapor transport method. Scanning electron microscopy images showed that the crystals were layered and transmission electron microscopy, X-ray diffraction, and Raman spectroscopy measurements confirmed that the crystals were in the 1T-phase with a CdI2-like structure. The bandgap of pristine HfS2 obtained from the absorption and photoconductivity spectra was approximately 1.99 eV. As the dopant changed from Mn, Fe, and Co, to Cu, the bandgap gradually increased. The activation energies of the samples were determined using temperature-dependent current-voltage curves. After doping, the activation energy decreased, and the Co-doped HfS2 exhibited the smallest activation energy. Time-resolved photoresponse measurements showed that doping improved the response of HfS2 to light; the Co-doped HfS2 exhibited the best response. The photoresponsivity of HfS2 as a function of the laser power and bias voltage was measured. After doping, the photoresponsivity increased markedly; the Co-doped HfS2 exhibited the highest photoresponsivity. All the experimental results indicated that doping with Mn, Fe, Co, and Cu significantly improved the photoresponsive performance of HfS2, of which Co-doped HfS2 had the best performance. Full article
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