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Current Trends and Future Challenges of Electronic and Photonic Materials

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

Deadline for manuscript submissions: 20 June 2024 | Viewed by 3066

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Special Issue Editors

Prof. Dr. Haichang Zhang

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Guest Editor

School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
Interests: nanocomposite materials and their applications; nanoenergy; organic field-effect transistors; perovskite solar cells; organic synthesis; coating
Special Issues, Collections and Topics in MDPI journals

Dr. Zhifeng Deng

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Guest Editor

School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
Interests: organic-field effect transistors; solar cells; organic synthesis; coating
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electronic and photonic materials are at the forefront of technological advancements, driving innovation in electronic and photonic devices that have become integral to our daily lives. In the field of electronic materials, there is a growing emphasis on the development of new semiconductor materials, such as organic and two-dimensional materials, to enable the next generation of high-speed, low-power electronic devices. Additionally, the integration of novel materials into electronic circuits and the exploration of new fabrication techniques are key trends in electronic materials research. Meanwhile, there is a rising interest in materials that can manipulate light at the nanoscale, enabling the development of compact and efficient photonic devices for communication, sensing, and imaging applications.

However, some problems prevent the development, like scalability, manufacturability, and sustainability. And researchers focus on overcoming fundamental material limitations to enable the development of new functionalities and applications.

This Special Issue will provide readers with up-to-date information on the recent progress and future challenges in the fields of electronic and photonic materials. All original research article or review papers are welcomed to contribute.

Prof. Dr. Haichang Zhang
Dr. Zhifeng Deng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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

electronic materials
photonic materials
two-dimensional materials
semiconductors
insulators
optical and display materials
materials for transistors
quantum spintronics
nanotechnology
metallization
superconductivity

Published Papers (4 papers)

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Research

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13 pages, 2931 KiB

Open AccessArticle

The Influence of Electroluminescent Inhomogeneous Phase Addition on Enhancing MgB₂ Superconducting Performance and Magnetic Flux Pinning

by Yao Qi, Duo Chen, Chao Sun, Qingyu Hai and Xiaopeng Zhao

Materials 2024, 17(8), 1903; https://doi.org/10.3390/ma17081903 - 19 Apr 2024

Viewed by 276

Abstract

As a highly regarded superconducting material with a concise layered structure, MgB₂ has attracted significant scientific attention and holds vast potential for applications. However, its limited current-carrying capacity under high magnetic fields has greatly hindered its practical use. To address this issue, we have enhanced the superconducting performance of MgB₂ by incorporating inhomogeneous phase nanostructures of p-n junctions with electroluminescent properties. Through temperature-dependent measurements of magnetization, electronic specific heat, and Hall coefficient under various magnetic fields, we have confirmed the crucial role of inhomogeneous phase electroluminescent nanostructures in improving the properties of MgB₂. Experimental results demonstrate that the introduction of electroluminescent inhomogeneous phases effectively enhances the superconducting performance of MgB₂. Moreover, by controlling the size of the electroluminescent inhomogeneous phases and optimizing grain connectivity, density, and microstructural uniformity, we can further improve the critical temperature (T_C) and flux-pinning capability of MgB₂ superconducting materials. Comprehensive studies on the physical properties of MgB₂ superconducting structures added with p-n junction electroluminescent inhomogeneous phases also confirm the general effectiveness of electroluminescent inhomogeneous phases in enhancing the performance of superconducting materials. Full article

(This article belongs to the Special Issue Current Trends and Future Challenges of Electronic and Photonic Materials)

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14 pages, 23949 KiB

Open AccessArticle

Investigation of Layered Structure Formation in MgB₂ Wires Produced by the Internal Mg Coating Process under Low and High Isostatic Pressures

by Daniel Gajda, Michał Babij, Andrzej Zaleski, Doğan Avci, Fırat Karaboga, Hakan Yetis, Ibrahim Belenli and Tomasz Czujko

Materials 2024, 17(6), 1362; https://doi.org/10.3390/ma17061362 - 16 Mar 2024

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Abstract

Currently, MgB₂ wires made by the powder-in-tube (PIT) method are most often used in the construction and design of superconducting devices. In this work, we investigated the impact of heat treatment under both low and high isostatic pressures on the formation of a layered structure in PIT MgB₂ wires manufactured using the Mg coating method. The microstructure, chemical composition, and density of the obtained superconductive wires were investigated using scanning electron microscopy (SEM) with an energy-dispersive X-ray spectroscopy (EDS) analyzer and optical microscopy with Kameram CMOS software (version 2.11.5.6). Transport measurements of critical parameters were made by using the Physical Property Measurement System (PPMS) for 100 mA and 19 Hz in a perpendicular magnetic field. We observed that the Mg coating method can significantly reduce the reactions of B with the Fe sheath. Moreover, the shape, uniformity, and continuity of the layered structure (cracks, gaps) depend on the homogeneity of the B layer before the synthesis reaction. Additionally, the formation of a layered structure depends on the annealing temperature (for Mg in the liquid or solid-state), isostatic pressure, type of boron, and density of layer B before the synthesis reaction. Full article

(This article belongs to the Special Issue Current Trends and Future Challenges of Electronic and Photonic Materials)

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19 pages, 3872 KiB

Open AccessArticle

Derivatives of Phenyl Pyrimidine and of the Different Donor Moieties as Emitters for OLEDs

by Hryhorii Starykov, Oleksandr Bezvikonnyi, Karolis Leitonas, Jurate Simokaitiene, Dmytro Volyniuk, Eigirdas Skuodis, Rasa Keruckiene and Juozas Vidas Grazulevicius

Materials 2024, 17(6), 1357; https://doi.org/10.3390/ma17061357 - 15 Mar 2024

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Abstract

Two derivatives of phenyl pyrimidine as acceptor unit and triphenylamino or 4,4′-dimethoxytriphenylamino donor groups were designed and synthesized as emitters for organic light-emitting diodes (OLEDs) aiming to utilize triplet excitons in the electroluminescence. Thermogravimetric analysis revealed high thermal stability of the compounds with 5% weight loss temperatures of 397 and 438 °C. The theoretical estimations and photophysical data show the contributions of local excited and charge transfer states into emission. The addition of the methoxy groups led to the significant improvement of hole-transporting properties and the bathochromic shift of the emission from blue to green-blue spectral diapason. It is shown that mixing of the compounds with the organic host results in facilitation of the delayed emission. The singlet–triplet energy splitting was found to be too big for the thermally activated delayed fluorescence. No thermal activation of the long-lived emission was detected. No experimental evidence for triplet–triplet annihilation and room temperature phosphorescence were detected making the hot exciton mechanism the most probable one. The OLEDs based on the compounds reached the maximum external quantum efficiency of up to 10.6%. Full article

(This article belongs to the Special Issue Current Trends and Future Challenges of Electronic and Photonic Materials)

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Review

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43 pages, 6012 KiB

Open AccessReview

Advancements in Photovoltaic Cell Materials: Silicon, Organic, and Perovskite Solar Cells

by Abniel Machín and Francisco Márquez

Materials 2024, 17(5), 1165; https://doi.org/10.3390/ma17051165 - 01 Mar 2024

Cited by 1 | Viewed by 1415

Abstract

The evolution of photovoltaic cells is intrinsically linked to advancements in the materials from which they are fabricated. This review paper provides an in-depth analysis of the latest developments in silicon-based, organic, and perovskite solar cells, which are at the forefront of photovoltaic research. We scrutinize the unique characteristics, advantages, and limitations of each material class, emphasizing their contributions to efficiency, stability, and commercial viability. Silicon-based cells are explored for their enduring relevance and recent innovations in crystalline structures. Organic photovoltaic cells are examined for their flexibility and potential for low-cost production, while perovskites are highlighted for their remarkable efficiency gains and ease of fabrication. The paper also addresses the challenges of material stability, scalability, and environmental impact, offering a balanced perspective on the current state and future potential of these material technologies. Full article

(This article belongs to the Special Issue Current Trends and Future Challenges of Electronic and Photonic Materials)

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