Nanostructured Oxide Semiconductor Materials: Structure, Properties, and Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: closed (10 February 2024) | Viewed by 1014

Special Issue Editor


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Guest Editor
Department of Applied Materials and Optoelectronic Engineering, Science & Technology Building IV, Room 312, National Chi Nan University, Nantou 54561, Taiwan
Interests: oxide semiconductors; photodetectors; gas sensors

Special Issue Information

Dear Colleagues,

Nanostructured oxide semiconductor materials have garnered significant attention due to their unique properties and versatile applications. These materials are characterized by their engineered nanoscale architecture, which imparts distinctive electronic, optical, and catalytic properties. Nanostructured oxide semiconductors present both exciting opportunities and complex challenges. Precise control over oxide semiconductors' nanoscale structure and morphology can be challenging. Achieving uniformity in size, shape, and distribution of nanostructures is essential for obtaining consistent and reproducible properties. Moreover, understanding the impact of defects, impurities, and surface states on the material's behavior is crucial for optimizing performance. The integration of these materials into functional devices necessitates compatibility with existing technologies and materials, requiring innovative fabrication methods.

This Special Issue aims to provide a comprehensive platform for researchers to share their latest insights, findings, and innovations in the realm of nanostructured oxide semiconductor materials. Contributions that uncover novel synthesis methods, delve into the fundamental structural aspects, elucidate the intriguing properties arising at the nanoscale, and explore the wide spectrum of applications these materials offer are welcome. The potential of nanostructured oxide semiconductor materials is vast, from electronic and optoelectronic devices to energy storage systems and catalytic applications.

Dr. Chun-Ying Huang
Guest Editor

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Keywords

  • oxide semiconductors
  • structure
  • morphology
  • defects
  • synthesis methods
  • applications
  • photodetectors
  • LEDs
  • solar cells
  • gas sensors

Published Papers (1 paper)

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Research

14 pages, 11762 KiB  
Article
Optimization of the Consolidation Parameters for Enhanced Thermoelectric Properties of Gr-Bi2Te2.55Se0.45 Nanocomposites
by Farah El-Makaty, Abdel Magid Hamouda, Anas Abutaha and Khaled Youssef
Nanomaterials 2024, 14(3), 260; https://doi.org/10.3390/nano14030260 - 25 Jan 2024
Viewed by 807
Abstract
Hot pressing represents a promising consolidation technique for ball-milled bismuth telluride alloys, yet deep investigations are needed to understand its effect on the thermoelectric properties. This paper studies the effect of hot-pressing parameters (temperature and pressure) on the thermoelectric properties of the n-type [...] Read more.
Hot pressing represents a promising consolidation technique for ball-milled bismuth telluride alloys, yet deep investigations are needed to understand its effect on the thermoelectric properties. This paper studies the effect of hot-pressing parameters (temperature and pressure) on the thermoelectric properties of the n-type Gr-Bi2Te2.55Se0.45 nanocomposite. Ultra-high pressure, up to 1.5 GPa, is considered for the first time for consolidating Bi2(Te,Se)3 alloys. Results from this study show that increasing the temperature leads to changes in chemical composition and causes noticeable grain growth. On the contrary, increasing pressure mainly causes improvements in densification. Overall, increments in these two parameters improve the ZT values, with the temperature parameter having a higher influence. The highest ZT of 0.69 at 160 °C was obtained for the sample hot-pressed at 350 °C and 1 GPa for 5 min, which is indeed an excellent and competitive value when compared with results reported for this n-type Bi2Te2.55Se0.45 composition. Full article
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