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Keywords = boron monoelement nanowire and nanotube

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22 pages, 6182 KiB  
Review
Inorganic Boron-Based Nanostructures: Synthesis, Optoelectronic Properties, and Prospective Applications
by Yan Tian, Zekun Guo, Tong Zhang, Haojian Lin, Zijuan Li, Jun Chen, Shaozhi Deng and Fei Liu
Nanomaterials 2019, 9(4), 538; https://doi.org/10.3390/nano9040538 - 3 Apr 2019
Cited by 46 | Viewed by 5947
Abstract
Inorganic boron-based nanostructures have great potential for field emission (FE), flexible displays, superconductors, and energy storage because of their high melting point, low density, extreme hardness, and good chemical stability. Until now, most researchers have been focused on one-dimensional (1D) boron-based nanostructures (rare-earth [...] Read more.
Inorganic boron-based nanostructures have great potential for field emission (FE), flexible displays, superconductors, and energy storage because of their high melting point, low density, extreme hardness, and good chemical stability. Until now, most researchers have been focused on one-dimensional (1D) boron-based nanostructures (rare-earth boride (REB6) nanowires, boron nanowires, and nanotubes). Currently, two-dimensional (2D) borophene attracts most of the attention, due to its unique physical and chemical properties, which make it quite different from its corresponding bulk counterpart. Here, we offer a comprehensive review on the synthesis methods and optoelectronics properties of inorganic boron-based nanostructures, which are mainly concentrated on 1D rare-earth boride nanowires, boron monoelement nanowires, and nanotubes, as well as 2D borophene and borophane. This review paper is organized as follows. In Section I, the synthesis methods of inorganic boron-based nanostructures are systematically introduced. In Section II, we classify their optical and electrical transport properties (field emission, optical absorption, and photoconductive properties). In the last section, we evaluate the optoelectronic behaviors of the known inorganic boron-based nanostructures and propose their future applications. Full article
(This article belongs to the Special Issue Dynamics and Applications of Photon-Nanostructured Systems)
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17 pages, 3310 KiB  
Review
The Growth Methods and Field Emission Studies of Low-Dimensional Boron-Based Nanostructures
by Haibo Gan, Tong Zhang, Zekun Guo, Haojian Lin, Zijuan Li, Huanjun Chen, Jun Chen and Fei Liu
Appl. Sci. 2019, 9(5), 1019; https://doi.org/10.3390/app9051019 - 12 Mar 2019
Cited by 10 | Viewed by 4000
Abstract
Based on the morphology characteristics, low-dimensional (LD) nanostructures with high aspect ratio can be usually divided into nanowire, nanocone, nanotube, nanorod, nanoribbon, nanobelt and so on. Among numerous LD nanostructures, boron-based nanostructures attracted much interest in recent years because they have high melting-point, [...] Read more.
Based on the morphology characteristics, low-dimensional (LD) nanostructures with high aspect ratio can be usually divided into nanowire, nanocone, nanotube, nanorod, nanoribbon, nanobelt and so on. Among numerous LD nanostructures, boron-based nanostructures attracted much interest in recent years because they have high melting-point, large electric and thermal conductivity, and low work function. Compared to traditional thermal emission, field emission (FE) has notable advantages, such as lower power dissipation, longer working life, room-temperature operation, higher brightness and faster switching speed. Most studies reveal they have lower turn-on and threshold fields as well as high current density, which are believed as ideal cold cathode nanomaterials. In this review, we will firstly introduce the growth methods of LD boron-based nanostructures (boron monoelement and rare-earth metal hexaboride). Then, we will discuss their FE properties and applications. At last, the conclusions and outlook will be summarized based on the above studies. Full article
(This article belongs to the Special Issue Field Emission from Graphene and other Nanostructures)
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